Alesis QUADRAVERBGT User Manual

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ALESIS

QuadraVerb GT

Reference Manual

sCHAPTER 1 Ð GETTING STARTED ...............................................1

1.1 INTRODUCTION ......................................................................................1

What It Is ...............................................................................................1

Features..................................................................................................2

1.2 SYSTEM HOOKUP BASICS.....................................................................2

AC Transformer Hookup...................................................................3

1.3 AUDIO HOOKUPS ....................................................................................3

Mono In, Mono Out............................................................................3

Mono In, Stereo Out............................................................................4

Stereo In, Stereo Out ...........................................................................4

Mono Send, Mono Return Effects Loop .........................................5

Mono Send, Stereo Return Effects Loop.........................................5

Stereo Send, Stereo Return Effects Loop.........................................6

Interfacing with Mixer Stereo Effects Sends...................................7

1.4 FOOTSWITCH HOOKUP.........................................................................7

1.5 EXTERNAL EFFECTS HOOKUP ............................................................8

1.6 SETTING LEVELS......................................................................................9

1.7 CHECK OUT THE FACTORY PROGRAMS.........................................9

Selecting Programs ..............................................................................10

1.8 MIDI HOOKUP...........................................................................................10

MIDI Program Selection .....................................................................11

MIDI Controller Pedal Hookup ........................................................12

MIDI Thru/Out Hookup....................................................................13

1.9 ROCK OUT!.................................................................................................13

CHAPTER 2 Ð QuadraVerb GT MODULES AND CONFIGURATIONS 14

2.1 ABOUT THE QUADRAVERB GT's EFFECTS ....................................14

Preamp ...................................................................................................14

Reverb....................................................................................................14

Delay .......................................................................................................15

Pitch Change .........................................................................................15

Equalization ..........................................................................................16

Panning and Tremolo.........................................................................18

Ring Modulation .................................................................................18

Tunable Resonators.............................................................................18

Sampling................................................................................................18

Mixer.......................................................................................................18

Modulation...........................................................................................19

ÒBi-TimbralÓ Effects.............................................................................19

2.2 ABOUT CONFIGURATIONS.................................................................20

#1 Preamp > EQ > Tremolo/Panning > Pitch > Delay > Reverb 21

#2 Preamp > Lezlie > Delay > Reverb.............................................22

#4 Preamp > 5 Band EQ > Tremolo/Panning >............................23

#5 Preamp > 3 Band EQ > Reverb....................................................24

#6 Preamp > Ring Modulator > Delay > Reverb..........................25

#7 Preamp > Resonators > Delay > Reverb ...................................25

#8 Preamp > Sampling ......................................................................26

CHAPTER 3 - BASIC EDITING TECHNIQUES .................................27

3.1 HOW EDITING WORKS .........................................................................27

3.2 COMPARING EDITED AND NON-EDITED VERSIONS OF PROGRAMS 29

3.3 SAVING (STORING) EDITED PROGRAMS .......................................29

3.4 RENAMING PROGRAMS ......................................................................30

3.5 RECALLING INDIVIDUAL FACTORY PROGRAMS.......................31

3.6 RECALLING ALL FACTORY PROGRAMS.........................................31

CHAPTER 4 Ð EDITING CONFIGURATION PARAMETERS.............32

4.1 SELECTING A CONFIGURATION .......................................................32

4.2 SELECTING A CONFIGURATION MODULE FOR EDITING.........33

4.3 EDITING PREAMP PARAMETERS ......................................................33

Compression.........................................................................................33

Overdrive ..............................................................................................33

Distortion...............................................................................................34

Preamp Tone.........................................................................................34

Bass Boost ..............................................................................................35

Cabinet Simulator................................................................................35

Effect Loop .............................................................................................35

Noise Gate .............................................................................................36

Preamp Out Level................................................................................36

4.4 EDITING REVERB PARAMETERS.......................................................37

Reverb Type (configs 1, 2, 5, 6, 7).......................................................37

Reverb Input 1 (configs 1, 2, 6, 7) ......................................................37

Reverb Input (config 5).......................................................................38

Reverb Input 2 (configs 1, 2, 6, 7) ......................................................38

Reverb Input Mix (configs 1, 2, 6, 7).................................................38

Reverb Predelay (configs 1, 2, 5, 6, 7)................................................39

Reverb Predelay Mix (configs 1, 2, 5, 6, 7)........................................39

Reverb Decay (configs 1, 2, 5, 6, 7).....................................................40

Reverb Diffusion Amount (configs 1, 2, 5, 6, 7).............................40

Reverb Density (configs 1, 2, 5, 6, 7)..................................................41

Reverb Low Frequency Decay (configs 1, 2, 5, 6, 7)........................41

Reverb High Frequency Decay (configs 1, 2, 5, 6, 7).......................42

Reverb Gate Status (configs 1, 2, 5, 6, 7)...........................................42

Reverb Gate Hold Time (configs 1, 2, 5, 6, 7)..................................42

Reverb Gate Release Time (configs 1, 2, 5, 6, 7) .............................43

Reverb Gated Level (configs 1, 2, 5, 6, 7)..........................................43

4.5 EDITING DELAY PARAMETERS..........................................................43

Delay Type (configs 1, 2, 3, 4, 6, 7)......................................................43

Delay Input 1 (configs 1, 4, 6, 7) .........................................................44

Delay Input (config 3)..........................................................................44

Delay Input Mix (configs 1, 2, 4, 6, 7)................................................45

Delay Time (configs 1, 2, 3, 4, 6, 7).....................................................45

Delay Feedback (configs 1, 2, 3, 4, 6, 7)..............................................46

Right Delay Time (configs 1, 2, 3, 4, 6, 7) .........................................46

Delay Feedback Right (configs 1, 2, 3, 4, 6, 7)...................................46

Multi Tap Number (config 4 only)...................................................47

Multi Tap Delay Time (config 4 only) .............................................47

Multi Tap Volume (config 4 only)...................................................47

Multi Tap Panning (config 4 only)...................................................48

Multi Tap Feedback (config 4 only)..................................................48

Multi Tap Master Feedback (config 4 only) ....................................48

4.6 EDITING PITCH PARAMETERS ...........................................................49

Pitch Mode (configs 1, 4).....................................................................49

Pitch Input (configs 1, 4) .....................................................................50

LFO Waveshape (Chorus only) ........................................................50

LFO Speed (Chorus and Flange only)..............................................50

LFO Depth (Chorus and Flange only)..............................................50

Pitch Feedback (Chorus and Flange only).......................................51

Trigger Flange (Flange only)..............................................................51

Pitch Detune (Detune only)...............................................................51

Phaser Speed (Phaser only)................................................................52

Phaser Depth (Phaser only)................................................................52

Lezlie Stereo Separation (config 2 only)..........................................52

Lezlie Motor Control (config 2 only) ...............................................52

Lezlie Speed (config 2 only) ...............................................................53

Ring Modulator Spectrum Shift (config 6 only) ...........................53

Ring Modulator Output Mix (config 6 only)..................................53

Ring Modulator Delay/Reverb Input (config 6 only) ..................54

Reverb Chorus Mode (config 5 only)...............................................54

4.7 A WORD ABOUT EQ, RESONATORS, AND GUITAR TONE ......55

Resonators, EQ, and Tone..................................................................55

Programmable Tone Curves .............................................................56

4.8 EDITING 3-BAND EQ AND RESONATOR PARAMETERS (config 1) 56

EQ Preset ................................................................................................56

EQ Mode.................................................................................................57

Resonator Tune (Resonators + EQ mode only) ............................57

Resonator Decay (Resonators + EQ mode only)............................57

Resonator Amplitude (Resonators + EQ mode only)..................58

Low EQ Frequency (3 Band EQ mode only)....................................58

Low EQ Amplitude (3 Band EQ mode only)..................................58

Mid EQ Frequency................................................................................59

Mid EQ Bandwidth..............................................................................59

Mid EQ Amplitude..............................................................................59

High EQ Frequency (3 Band EQ mode only) ..................................60

High EQ Amplitude (3 Band EQ mode only).................................60

4.9 EDITING LEZLIE EQ PARAMETERS (config 2)..................................61

High Rotor Level .................................................................................61

4.10 EDITING 11-BAND GRAPHIC EQ PARAMETERS (config 3) .......61

EQ Preset ................................................................................................61

Graphic Frequencies and Levels.......................................................62

4.11 EDITING 5-BAND EQ AND RESONATOR PARAMETERS (config 4)63

EQ Preset ................................................................................................63

EQ Mode.................................................................................................64

Low EQ Frequency ...............................................................................64

Low EQ Amplitude..............................................................................64

Low Mid EQ Frequency (5 Band EQ mode only)...........................64

Low Mid EQ Bandwidth (5 Band EQ mode only) .........................65

Low Mid EQ Amplitude (5 Band EQ mode only) .........................65

Mid EQ Frequency................................................................................65

Mid EQ Bandwidth..............................................................................66

Mid EQ Amplitude..............................................................................66

Hi Mid EQ Frequency (5 Band EQ mode only) ..............................66

Hi Mid EQ Bandwidth (5 Band EQ mode only).............................67

Hi Mid EQ Amplitude (5 Band EQ mode only).............................67

High EQ Frequency..............................................................................67

High EQ Amplitude ............................................................................68

Resonator Number (5 Resonator/3 EQ mode only).....................68

Resonator Tune (5 Resonator/3 EQ mode only)...........................68

Resonator Decay (5 Resonator/3 EQ mode only)..........................69

Resonator Amplitude (5 Resonator/3 EQ mode only)................69

4.12 EDITING 3-BAND EQ (config 5)...........................................................69

EQ Preset ................................................................................................69

Low EQ Frequency ...............................................................................70

Low EQ Amplitude..............................................................................70

Mid EQ Frequency................................................................................71

Mid EQ Bandwidth..............................................................................71

Mid EQ Amplitude..............................................................................71

High EQ Frequency..............................................................................72

High EQ Amplitude ............................................................................72

4.13 EDITING 5 BAND RESONATOR ........................................................72

Resonator Gate Mode (config 7 only) ..............................................72

Resonator Decay (config 7 only)........................................................73

Resonator Tune (config 7 only) ........................................................73

4.14 EDITING MIX PARAMETERS..............................................................73

Direct Signal Level...............................................................................74

Master Effects Level.............................................................................74

Preamp Signal.......................................................................................74

Preamp Level (appears only with Pre-EQ preamp signal) ..........75

EQ Level (appears only with Post-EQ preamp signals)................75

Pitch Output Level...............................................................................75

Delay Output Level..............................................................................75

Reverb Output Level...........................................................................76

Modulation...........................................................................................76

Modulation Depth...............................................................................76

Modulation Speed ...............................................................................76

4.15 EDITING MIX PARAMETERS..............................................................77

Direct Signal Level...............................................................................77

Master Effects Level.............................................................................77

Lezlie Output Level.............................................................................77

Delay Output Level..............................................................................78

Reverb Output Level...........................................................................78

4.16 EDITING MIX PARAMETERS..............................................................78

Direct Signal Level...............................................................................78

Master Effects Level.............................................................................79

EQ Output Level...................................................................................79

Delay Output Level..............................................................................79

4.17 EDITING MIX PARAMETERS..............................................................80

Direct Signal Level...............................................................................80

Master Effects Level.............................................................................80

Preamp Signal.......................................................................................80

Preamp Level (appears only with Pre-EQ preamp signal) ..........81

EQ Output Level (appears only with Post-EQ preamp signals)..81 Pitch Output Level (appears only with Post-EQ direct signals)..81

Delay Output Level..............................................................................82

Modulation...........................................................................................82

Modulation Depth...............................................................................82

Modulation Speed ...............................................................................82

4.18 EDITING MIX PARAMETERS..............................................................83

Direct Signal Level (appears only with Pre-EQ direct signals) ...83

Master Effects Level.............................................................................83

Preamp Signal.......................................................................................83

Preamp Level (appears only with Pre-EQ preamp signal) ..........84

EQ Output Level (appears only with Post-EQ preamp signals)..84

Reverb Output Level...........................................................................84

4.19 EDITING MIX PARAMETERS..............................................................85

Direct Signal Level...............................................................................85

Master Effects Level.............................................................................85

Preamp Level........................................................................................85

Ring Modulator Output Level..........................................................86

Delay Output Level..............................................................................86

Reverb Output Level...........................................................................86

4.20 EDITING MIX PARAMETERS..............................................................87

Direct Signal Level...............................................................................87

Master Effects Level.............................................................................87

Preamp Signal Level ...........................................................................87

Resonator Output Level.....................................................................88

Delay Output Level..............................................................................88

Reverb Output Level...........................................................................88

CHAPTER 5 Ð SAMPLING ...............................................................89

5.1 SELECTING THE SAMPLING CONFIGURATION...........................89

5.2 RECORDING A SAMPLE.........................................................................89

Recording By Audio Trigger..............................................................90

Recording from the Front Panel.......................................................90

Playing Back a Sample ........................................................................91

Front Panel Playback ...........................................................................92

Audio Trigger Playback.......................................................................92

MIDI Playback .......................................................................................93

Select MIDI Trigger Mode ..................................................................93

Select the MIDI Trigger Note.............................................................94

Adjusting the Sample Playback Length ..........................................95

Adjusting the Sample Mix Parameters...........................................96

CHAPTER 6 Ð THE MIDI BUTTON..................................................97

6.1 SELECT MIDI MODE.................................................................................97

6.2 PROGRAM CHANGE ENABLE.............................................................98

6.3 EDIT THE PROGRAM CHANGE TABLE.............................................99

6.4 MIDI THRU/OUT SELECTION..............................................................100

6.5 SYSTEM EXCLUSIVE DATA ENABLE.................................................100

6.6 SEND PROGRAM DATA (SYS EX) OVER MIDI................................100

6.7 PROGRAM ADVANCE FOOTSWITCH RANGE..............................103

CHAPTER 7 Ð MIDI MODULATION (NAME/MOD BUTTON) ..........104

7.1 ABOUT MOD SOURCES AND TARGETS ..........................................104

7.2 PROGRAMMING MOD SOURCES AND TARGETS........................105

7.3 TARGET PARAMETER LISTING..........................................................107

Configuration 1 Target Parameters..................................................107

Configuration 2 Target Parameters..................................................108

Configuration 3 Target Parameters..................................................109

Configuration 4 Target Parameters..................................................109

Configuration 5 Target Parameters..................................................110

Configuration 6 Target Parameters..................................................111

Configuration 7 Target Parameters..................................................111

7.4 PARAMETER DEFAULT VALUE CHART .........................................113

CHAPTER 8 Ð MIDI SUPPLEMENT .................................................116

8.1 MIDI BASICS .............................................................................................116

8.2 MIDI HARDWARE..................................................................................116

8.3 MIDI MESSAGE BASICS.........................................................................117

8.4 CHANNEL MESSAGES ..........................................................................117

8.4A Voice Messages...........................................................................117

8.4B Mode Messages ...........................................................................119

8.5 SYSTEM COMMON MESSAGES..........................................................120

8.6 BOOKS ON MIDI ......................................................................................121

8.7 VIDEOS ON MIDI.....................................................................................121

CHAPTER 1 Ð GETTING STARTED

1.1 INTRODUCTION

What It Is

The Alesis QuadraVerb GT is a stereo effects unit that is ideal for guitar. It combines analog and digital electronics to provide the best of both worlds. Analog effects include: ¥Compression ¥Distortion ¥ Flat/Presence/Brightness Control ¥ Bass Boost ¥ Speaker Cabinet Simulator (ideal for use with headphones or

recording direct; can be bypassed when feeding a guitar amp) ¥ Noise Gate ¥ Programmable Effects Loop for inserting other effects (can also

provide a signal send from the analog outputs, and receive a return

signal into the digital processor)

The digital effects are the same ones that have made the QuadraVerb Plus a favorite in studios and live equipment racks world-wide: ¥Reverb ¥ Delay (stereo or mono) ¥ Pitch Change (chorus, flange, detune, phaser, etc.) ¥ Equalization (graphic or parametric) ¥Panning and Tremolo ¥Ring Modulation ¥ Tunable Resonators (a very resonant filtering effect) ¥ Sampling (up to 1.5 seconds of sound can be captured and replayed)

The order of the analog effects are preset in their optimum positions; the routing of the digital effects is flexible and programmable. All effects parameters are editable. 100 edited programs can be saved in memory, and called up by front panel switches or MIDI program change commands.

The QuadraVerb GT is also MIDI controllable. Settings need not be staticÑyou can control them in real time with Continuous Controller foot pedals, or with sequencers or keyboards.

Features

¥ 20 Hz to 20 kHz frequency response ¥ Up to 11 simultaneous effects (6 analog, 5 digital) and programmable

¥ Backlit, descriptive 32 character LCD display ¥ Touch sensitive programming buttons for quick editingÑpress

¥ Stores up to 100 programs ¥ Comprehensive MIDI implementation ¥ Real-time parameter control via MIDI controllers ¥ Easy editing of all parameters ¥ All functions, parameters, and volume levels fully programmable ¥ Stereo in and out ¥ Flexible effects routing and mixing ¥ Several types of reverbs, including: Plate, Room,

¥ Several types of delay, including: Ping Pong Delay,

¥ Several types of Pitch Shift, including: Mono

¥ Three types of Digital EQ, including: 3 band

¥ Any or all Alesis presets can be recalled from ROM

effects loop

harder to scroll faster through the display

Chamber, Hall, and Reverse

Mono Delay, Stereo Delay, and Multitap delay

Chorus, Stereo Chorus, Mono Flange, Stereo Flange,

Pitch Detune, and Phase Shifter

Parametric, 5 band Parametric, and 11 band Graphic

at any time

1.2 SYSTEM HOOKUP BASICS

The QuadraVerb GT is designed for mono or stereo guitar, bass, Chapman Stick, etc. but is also right at home in the studio for processing vocals, drums, pianos, synthesizers (try the rotating speaker sound!), tape tracks, and other instruments.

The QuadraVerb GT can insert between your guitar and subsequent effects units or amplification systems. This lets you use the amp's overdrive options to further color the QuadraVerb GT's sound. Or, patch the QuadraVerb GT into an ampÕs effects loop. This lets the QuadraVerb GT process the amp's internal sound, and in some cases, lets you use the amplifier's preamp section as an alternate to the QuadraVerb GT's internal preamp.

Following are some typical hookups, followed by information on proper

level-setting. All inputs and outputs are unbalanced lines.

Turn your amplifier volume all the way down when patching the QuadraVerb GT into your system!

AC Transformer Hookup

Plug the QuadraVerb GT's AC adapter into the wall. The smaller plug inserts into the 9 VAC power jack on the QuadraVerb GT's rear panel.

To prolong the AC adapter's life, unplug it from AC power when not in use (turning off the QuadraVerb GT's power switch does not disconnect the AC adapter from AC power). It's good practice to plug all your ACpowered devices into a switched power strip, so that turning off the strip turns off power to all your gear.

1.3 AUDIO HOOKUPS

The QuadraVerb GT can interface with a variety of guitar systems and recording studio setups.

Mono In, Mono Out

From guitar

Right Input Right Output

Application Mono guitar feeding a mono amp, PA, or mixer.

Hookup Patch the guitar into the right input and feed the right output

to your amplifier (Using the left input and output will also work, but for the sake of consistency and simplicity, we'll just refer to the right input and output).

to mono amp, PA, or mixer

Mono In, Stereo Out

From guitar

to stereo amp, PA, or mixer

Application Mono guitar feeding a stereo amp, PA, or mixer.

Hookup Patch the guitar into the right input and feed the right and left

outputs to your amplifier.

Stereo In, Stereo Out

From guitar

Left Input

Right Input

Left Output

Right Output

to stereo amp, PA, or mixer

Right Output

Application Stereo guitar feeding a stereo amp, PA, or mixer.

Hookup Patch the guitar into the right and left inputs and feed the right

and left outputs to your amplifier.

Mono Send, Mono Return Effects Loop

from effects loop send

Right Input Right Output

Application Patching into a guitar amp with a mono effects loop. Do not confuse this with the QuadraVerb GTÕs internal effects loop; the loop in an amplifier is specifically designed for the insertion of signal processors such as the QuadraVerb GT.

Hookup Patch the effects loop send into the right QuadraVerb GT input and feed QuadraVerb GT's right output to the effects loop return.

Mono Send, Stereo Return Effects Loop

From effects loop send

to effects loop return

to effects loop stereo returns

Right Input

Left Output

Right Output

Application Patching into a guitar amp with a mono send and stereo return effects loop. Do not confuse this with the QuadraVerb GTÕs internal effects loop; the loop in an amplifier is specifically designed for the insertion of signal processors such as the QuadraVerb GT.

Hookup Patch the effects loop send into the right QuadraVerb GT input and patch the QuadraVerb GT's right and left outputs to the effects loop stereo return.

Stereo Send, Stereo Return Effects Loop

From effects loop sends

to effects loop returns

Left Input

Right Input

Left Output

Right Output

Application Patching into a guitar amp with a stereo send and stereo return effects loop. Do not confuse this with the QuadraVerb GTÕs internal effects loop; the loop in an amplifier is specifically designed for the insertion of signal processors such as the QuadraVerb GT.

Hookup Patch the effects loop sends into the right and left QuadraVerb GT inputs, and patch the QuadraVerb GT's right and left outputs to the effects loop stereo return.

Interfacing with Mixer Stereo Effects Sends

From mixer sends

Left Input

Right Input

Application Patching into a mixer's stereo effects sends for use as a reverb or other processor while recording.

Hookup Patch the mixer's auxiliary bus (or effects bus) sends into the right and left QuadraVerb GT inputs, and patch the QuadraVerb GT's right and left outputs to the mixer's stereo returns or if not available, two standard mixer channel inputs.

1.4 FOOTSWITCH HOOKUP

There are two footswitch jacks on the rear panel that accept standard, normally open, momentary contact footswitches.

Left Output

to mixer returns

Right Output

A footswitch plugged into the Bypass jack duplicates the BYPASS button function. Press on the footswitch to toggle between bypass and active modes. When bypassed, the LED in the middle of the BYPASS button will be lit.

A footswitch plugged into the Advance jack increments (or decrements)

the program number by one with each footswitch press. You can set an upper and lower program number limit, as described in section 5.7.

1.5 EXTERNAL EFFECTS HOOKUP

The QuadraVerb GT offers an effects loop where you can patch in effects other than the ones included in the unit (you might want to insert, for example, a wah-wah pedal or vintage fuzz). The effect can be bypassed or enabled for each patch.

Patch the Effects Loop Send jack to the effect input, and the Effects Loop Receive jack to the effect output. Also note that the Send jack provides a post-analog effects, pre-digital effects send suitable for driving guitar amps or a studio console; the Receive jack lets you plug directly into the digital effects and bypass the analog effects. The effects loop can therefore split the QuadraVerb GT into two separate effects, as described in section

2.1.

It is important to note that turning off the effects loop does not turn off the effects send. Selecting In or Out on the Effects Loop page will only enable or disable the Effects Loop Return jack. Also, the effects loop will be bypassed if there are no jacks inserted, regardless of whether the Effects Loop page is set to On or Off.

1.6 SETTING LEVELS

After hooking up your cables, set the proper levels. Start off with your amplifier turned down to a low volume to prevent any ear-shattering surprises as you learn about the QuadraVerb GT. After you know what you're doing, increase the level to normal monitoring levels.

1. Press the BYPASS button (its red LED will light) so that you hear only

the straight guitar sound.

2. Play your instrument and observe the 4-step LED meter toward the

left of the QuadraVerb GT.

3. Adjust the Input control so that the -6 dB LED lights consistently but

the Clip (red) LED lights rarely, if ever. The red LED indicates that

distortion is either about to occur or is actually occurring.

4. Adjust the output control for a comfortable monitoring level. Make

sure the output is turned up high enough to provide the amplifier,

mixer, or subsequent processor with sufficient level, but not turned

up so high that it overloads the unit it is feeding.

5. Press the BYPASS button again so that you can hear the effect of the

different QuadraVerb GT programs. BYPASS can be used at any time

to toggle between processed and straight sounds.

1.7 CHECK OUT THE FACTORY PROGRAMS

The QuadraVerb GT contains 90 programs that put your guitar through serious sonic gyrations. Initially, these programs contain factory presets. However, they can be edited or replaced with your own programs. You can also recall the original factory sound associated with a program location at any time, even if that location has been modified or erased, because the parameters for these programs are stored in ROM (permanent memory).

Assuming you've hooked up your guitar as described in the previous section, it's time to audition the QuadraVerb GT programs and see what this baby can do.

Selecting Programs

1. Press the PROGRAM (PROG) button. The LED in the middle of the

button will light.

2. There are three ways to select programs:

¥ MIDI program changes. See next section.

¥ Press either VALUE button to scroll through the available programs

(VALUE UP increases the program number, VALUE DOWN

decreases the program number). The harder you press the VALUE

button, the faster the Program numbers will scroll. Stop on a

program, and it will be selected.

¥ Key in a particular two-digit program number. Note that the module

buttons (REVERB, DELAY, PITCH, etc.) also have numbers printed in

gray. These can be used for entering numbers as long as the

PROGRAM button is held down.

Example: To enter program 56, press the PROGRAM button and

while it is being held down, press the 5 (MIDI) and 6 (CONFIG)

buttons. The display will show 56, and that program will be selected.

If you release the PROGRAM button before entering the two digit

program number, the program number will revert to what it was

before you pressed the PROGRAM button.

The number you enter must be a two-digit number, so enter a

Òleading zeroÓ if necessary. Example: To enter program 9, enter 09.

1.8 MIDI HOOKUP

MIDI is an internationally-accepted protocol that allows musical-related data to be conveyed from one device to another. See the MIDI supplement if you are not familiar with how MIDI works.

The most popular MIDI applications are hooking up a MIDI footswitch to change programs, and/or a MIDI continuous controller pedal to vary QuadraVerb GT parameters in real time, as you play. The following sections describe how this process works.

MIDI Program Selection

MIDI In

Footswitch

MIDI Out

The QuadraVerb GT responds to MIDI program change commands. Therefore, sending a particular program number via MIDI to the QuadraVerb GT will call up the program you specified.

If a device can generate program change commands, patching its MIDI Out to the QuadraVerb GT's MIDI In allows for remote program selection.

Several devices can generate program change commands:

¥ MIDI footswitch This is probably the option that most guitarists will

use. A MIDI footswitch sends program changes in response to

footswitch presses. Many companies make MIDI footswitches; their

manuals explain how to program the footswitch to send out

particular program changes.

¥ MIDI sequencer A sequencer can record and play back MIDI data,

including program change commands.

¥ Synthesizer Selecting a new program on a synthesizer usually sends

out a corresponding program change command. This allows any

signal processor hooked up to the synth to change its settings in

response to different synth programs.

¥ Other effects boxes If you use more than one effects box, calling up a

program on it will often send a corresponding program change

through its MIDI Out.

NOTE: Your QuadraVerb GT and the MIDI footswitch must both be set to the same MIDI channel to execute program changes.

MIDI Controller Pedal Hookup

MIDI In

Footswitch

Controller Pedal

MIDI In

Footswitch

Controller Pedal

MIDI

Several QuadraVerb GT parameters can be changed remotely over MIDI. Usually this is done with a footpedal that generates MIDI continuous controller data. There are 128 controllers, most of which are available for remote parameter control (some of the higher-numbered controllers are used to set up synthesizer modes and other things we donÕt need to worry about).

The basic idea is to set the parameter to be controlled to a particular controller number. Then set the pedal to the same controller number. As you vary the pedal, it will generate data that will change the QuadraVerb GT parameter. For example, assigning a foot pedal to delay feedback would allow you to kick in a slapback delay at the end of a phrase.

The MIDI controller pedal may be part of your footswitch unit, a separate stand-alone device, or a combination standard volume pedal and converter (e.g., Anatek Pocket Pedal). Synthesizers and other devices also generate MIDI continuous controller data.

If you want to feed the QuadraVerb GT with both a footswitch for program change control and a pedal for real time control, either the footswitch or pedal will need a merging input, or you will need a MIDI merger.

Merger

MIDI Thru/Out Hookup

MIDI In

Footswitch

MIDI Out

MIDI Thru/Out

MIDI In

The MIDI Thru/Out jack can have its function changed via software (see section 5.4). When MIDI Thru is turned on, this jack carries a duplicate of the MIDI data appearing at the MIDI In jack. In addition to the Thru function, the Thru/Out jack can then feed the MIDI In of other MIDIcontrolled unit, thus distributing the MIDI signal to two different units.

In addition to the Thru function, data generated by the QuadraVerb GT can be sent to other MIDI units. This is more of a feature for advanced MIDI users and is described in sections 5.5 and 5.6 on QuadraVerb GT System Exclusive options (for more information on System Exclusive information, see the MIDI supplement). Generally, the data generated from the QuadraVerb GT is used for one of two purposes:

¥ Transfer program data directly from one QuadraVerb GT to another.

¥ Send program data to a such as the Alesis DataDisk or other MIDI

storage device in order to back up the data inside the QuadraVerb GT.

1.9 ROCK OUT!

Play for a while and get a feel for how the QuadraVerb GT sounds. The factory programs give a good idea of what the QuadraVerb GT can do, and can also be modified later on if you want to customize the factory programs to your own specifications.

CHAPTER 2 Ð QUADRAVERB GT MODULES AND CONFIGURATIONS

Many guitarists will find that the 90 factory presets take care of most, if not all, of their musical needs. However, the QuadraVerb GT is a very flexible device and comes into its own when edited to your own specific needs.

To do this, it is necessary to understand the QuadraVerb GT's effects and configurations, which is what this chapter is all about. The next chapter covers how to edit those effects and configurations.

2.1 ABOUT THE QUADRAVERB GT's EFFECTS

The QuadraVerb GT has 11 main effects sections (including the mixer) and the ability to alter (modulate) some of the effects parameters in real time. Each effect modifies your signal in a particular way. A particular combination of the 11 effects is called a configuration, as explained in section 2.2.

Preamp

The Preamp section includes effects found in standard rack preamps, such as compression, overdrive, distortion, flat/bright/presence switch, bass boost, cabinet simulator, and noise gate.

This section is followed by a programmable effects loop that lets you insert your favorite classic wah-wah, phase shifter, etc.; you can enable or bypass the effect as part of a program. This loop can also be used to split the QuadraVerb GT into two separate effects (see the last part of this section on ÒBi-TimbralÓ Effects).

Reverb

Reverb is made up of a large number of distinct echoes, called reflections. In a natural acoustic space, each reflection's amplitude and brightness decays over time. This decaying action is influenced by the room size, the location of the sound source in the room, the hardness of the walls, and other factors.

Delay

There are five main reverb types, as described later. Furthermore, any reverb type can be gated, which is the process of abruptly cutting off the reverbÕs decay for a more ÒchoppyÓ sound.

Delay provides a discrete repetition of a signal. By adding feedback within the effect, the delayed signal can repeat many times, with each successive decay softer than its predecessor. The QuadraVerb GT offers four types of delay:

¥ Ping-Pong Delay In stereo, the delayed signal bounces back and forth

between channels, with the speed determined by the delay time

parameter. Maximum delay is 375 milliseconds in QuadMode, 400ms

in the Lezlie and Ring Modulation configurations, 750 ms in the

Graphic > Delay configuration, 705ms in the 5 Band EQ > Pitch >

Delay configuration, and 320ms in the Resonator configuration.

¥ Stereo Delay This has two individual delays, one for each channel.

Setting them to different delay times allows for polyrhythmic delays.

Maximum delay specs are the same as for ping-pong delay.

¥ Mono Delay Because this is a single delay line, it has twice the

maximum delay time of the stereo delay (up to 1500 ms).

¥ Multitap Delay Available only in the 5 BAND EQ > PITCH > DELAY

configuration, this delay includes 8 taps with variable delay time,

volume, panning, and feedback amount for each tap. The total delay

time of all eight delays cannot exceed 1470 ms.

Pitch Change

This module alters the pitch of a signal in various ways to produce ÒanimatedÓ timbres that are more complex than the original signal. The various pitch change options are:

¥ Chorus This combines a delayed (typically 10-25 ms), detuned

version of the original signal with the straight signal. Modulating the

delayed version creates phase, amplitude, and time differences that

sound like two instruments playing together. Mono and stereo

functions are available; stereo modulates two delayed signals instead

of just one.

¥ Flanging Flanging is similar to chorusing, but modulates the delayed

signal over a much shorter delay range (typically 0-12 ms). This

produces a Òjet airplaneÓ-like sound. Mono and stereo flanging is

available, and the flange modulation sweep can be triggered in order

to sync up with the rhythm of your playing.

¥ Detune Shifts the pitch by a fixed amount. This creates a thickening

effect similar to the difference between a 12-string and 6-string guitar.

¥ Phase Shifter This effect is similar to flanging, but covers a narrower

delay range and has a more diffused timbral quality.

¥ Lezlie Speaker Simulator With the Lezlie configuration selected, the

pitch change module becomes a rotating speaker simulator. Rotating

speakers, which involved mechanically rotating one or two speakers

to produce complex timbral changes, were extremely popular during

the 1960s.

Equalization

Equalization provides control over the tone of your signal by altering the frequency response in various ways. The QuadraVerb GT's three different types of EQ are:

¥ 3 Band Parametric This combines high and low frequency shelving

equalizers (like the tone controls found on stereo systems and guitar

amps) along with a sweepable midrange parametric stage (see Ó5 Band

Parametric,Ó next) that has variable boost or cut, frequency, and

bandwidth (resonance, or ÒbiteÓ). This works well for dialing in

rhythm guitar sounds.

The high and low shelving bands offer two parameters, amplitude

and frequency. Amplitude sets the amount of boost or cut; frequency

sets the frequency at which the maximum boost or cut occurs. This

boost continues for frequencies higher than the high frequency and

lower than the low frequency.

The middle band is parametric and offers amplitude, frequency, and

bandwidth parameters as described next.

¥ 5 Band Parametric This is identical to the 3 Band Parametric but

offers two additional sweepable midrange stages with variable boost

or cut, frequency, and bandwidth. The following diagram shows the

relationship between three parameters.

The complex response of the 5 band parametric lets you compensate

for dead spots on a guitar's neck, or set up a very specific frequency

response.

¥ 11 Band Graphic The graphic equalizer can boost or cut any of 11

different bands (16 Hz, 32 Hz, 62 Hz, 126 Hz, 250 Hz, 500 Hz, 1 kHz, 2

kHz, 4 kHz, 8 kHz, and 16 kHz.

Panning and Tremolo

Panning shifts the signal back and forth between the stereo outputs at a cyclical, adjustable rate. Tremolo provides a ÒpulsingÓ sound via cyclical level changes. Both have ÒdepthÓ parameters; with panning this varies the width of the pan in the stereo field, with tremolo this sets the difference between volume peaks and valleys.

Ring Modulation

Ring modulation shifts a signal's harmonics up and/or down by an adjustable frequency (expressed in Hertz). The QuadraVerb GTÕs ring modulator features individual outputs for the up and down signals. The resulting sound takes on a Òclangorous,Ó bell-like quality that is used mostly with percussive effects. Try this on a drum machine, or muted guitar parts.

Tunable Resonators

A resonator is a filter whose response is so sharp that it actually imparts a pitch to any signal going through it. In the Resonator configuration, there are up to five resonators, depending on the configuration, so you can tune the resonators to complex chord types. You can also transpose the resonator frequencies via MIDI notes to match a particular chord progression.

Sampling

Sampling is the process of digitally recording a signal into the QuadraVerb GT's memory, which can then be triggered via an external audio input (e.g., a snare drum sound coming from a tape track), a front panel button, or a MIDI note. Different MIDI notes will transpose the sample. Sampling is useful if you want to capture a particular effect or chord change, then play over it. Try it in the studio for drum sound replacement, reproducing unusual vocal effects, etc.

Mixer

The multiple effects are all placed in parallel. Each effectÕs output feeds a

mixer, and is variable so that you can change the balance of that particular effect with respect to the overall sound.

The effect input can come from the main input if you only want the effect to process the dry sound, but in many configurations, the effect can get its input from the output of other effects, or from a combination of processed and dry sounds.

Modulation

As mentioned earlier, many QuadraVerb GT parameters can be changed in real time via pedals that generate continuous controller commands, or from commands issued by a sequencer or synthesizer. Continuous controller pedals are available from a variety of manufacturers at various price points. These generate signals that are ÒtaggedÓ with a particular controller identification number. If you set a QuadraVerb GT parameter to be controlled by this particular controller number, moving the pedal will change the QuadraVerb GT parameter.

Modulation consists of choosing up to 8 ÒtargetÓ parameters to be modulated by any one of several types of MIDI ÒsourceÓ data types (pitch bend, aftertouch, note number, and note velocity as well as continuous controllers). Several parameters can be changed by one controller, so that, for example, moving a pedal could increase chorus depth and boost the midrange frequencies.

ÒBi-TimbralÓ Effects

The QuadraVerb GT can serve as two separate effects units by proper patching to and from the effects loop. For example, consider a situation where a guitarist plays guitar and sings. Plug the guitar into the QuadraVerb input; the effects loop send provides the post-analog effects signal, which can be routed to a guitar amp. Meanwhile, the voice mic can be externally preamplified and sent into the effects loop return. This allows the vocal to be processed by the digital chorus, reverb, equalization, etc. sections. The QuadraVerb GT output, which now carries only the processed vocal sound, can be routed to a PA for further amplification.

Right Output

to PA

Effects Return

From guitar

Effects Send

from Microphone

to Amplifier

Right Input

2.2 ABOUT CONFIGURATIONS

No matter which program you select, the analog effects are always in the same order. However, the digital effects can be connected together in one of eight different ways, each of which is called a configuration. A configuration doesn't just include a specific collection of effects, but also the way in which they interconnect (e.g., whether the delay signal is derived from an equalized or non-equalized signal). This allows for a great deal more flexibility than you would expect from a fixed configuration of effects.

This flexibility allows for some great sounds, but also requires a bit of experimentation to learn the subtleties of each configuration and how these subtleties affect the sound. It's probably easiest to start off by ÒtweakingÓ the factory presets to learn what the different parameters do, then graduate to creating programs from scratch.

These configuration descriptions use block diagrams to indicate signal flow. Keep the following in mind:

¥ Think of the connecting lines as Òpatch cordsÓ between different

Òeffects boxesÓ (the individual modules).

¥ Switches are enclosed in rectangular boxes with rounded corners.

¥ The knobs act as volume controls if two wires hook into the knob, or

mix (ÒpanÓ) between two signals (incoming wires) and provides an

output (outgoing wire) if three wires hook into the knob.

¥ Heavy lines indicate a stereo path. Note that most effects output a

stereo signal, but accept a summed, mono signal at the input.

#1 Preamp > EQ > Tremolo/Panning > Pitch > Delay > Reverb

PITCH

DELAY

PANNING

TREMOLO

REVERB

Pitch

Delay

Reverb

Pitch

Delay

Reverb

Effects INPUT

OUTPUT

Configuration 1

Mono

Stereo

Direct Output

Pre-Amp Signal

PREAMP

Preamp

Pre/Post EQ

Input

Output

Input 1

Input Mix

Output

Input 1

Input 2

Input Mi

Output

QuadModeª is a complex configuration that offers comprehensive switching and mixing possibilities. ItÕs excellent for creating larger-thanlife, animated sounds.

The Pitch module can switch its input between the preamp or EQ signals. The Delay moduleÕs Delay Input Mix control chooses a blend between the output of the Pitch module, or the preamp or EQ signal (as selected by the Delay Input 1 switch).

The Reverb moduleÕs Reverb Input Mix control chooses a blend between two input options. Reverb Input 1 switches between preamp, EQ, preDelay, or post-Pitch signals; Reverb Input 2 switches between the postDelay or post-Pitch signal.

Panning and Tremolo are available in this configuration, and are in series with the preamp or EQ signal line. The Preamp Signal Pre/Post EQ switch chooses whether the Preamp Output comes from preamp or EQ.

#2 Preamp > Lezlie > Delay > Reverb

LEZLIE

DELAY

REVERB

Delay

Lezlie

Reverb

Effects

Delay

Reverb

Reverb INPUT

Direct Output

PREAMP

OUTPUT

Configuration 2

Mono

Stereo

Output

Input 1

Input 2

Input Mix

Output

Input Mix

Output

This is similar to the QuadModeª configuration, but replaces the EQ and Pitch modules with a Lezlie (rotating speaker simulator) module and does not have a Preamp level control.

The Lezlie module simulates the common two-speaker system with two different speeds. The switching and mixing options are similar to those used in QuadMode. This configuration produces complex frequency and amplitude modulation effects and works very well with rhythm guitar.

#3 Preamp > Graphic EQ > Delay

GRAPHIC

DELAY

Delay

Effects

INPUT

Direct Output

PREAMP

OUTPUT

Configuration 3

Mono

Stereo

5 BAND

PITCH

PANNING

Pitch

Delay

EQ INPUT

OUTPUT

Pre-Amp Signal

PREAMP

Preamp

DELAY

Direct Output

Effects

Delay

Pitch

Delay

Configuration 4

Mono

Stereo

Input

Output

This combines the 11 band graphic EQ with delay. The EQ provides sophisticated sound-shaping for the preamp sound, and the delay adds ambience for lead effects.

#4 Preamp > 5 Band EQ > Tremolo/Panning >

Pitch Change > Delay

Output

Input Mix

Output

Pre/Post EQ

Input

Output

Input 1

TREMOL

This is just the ticket for rich chorus sounds. Use the 5 Band EQ to shape your timbre, Pitch Change to add chorusing (or other pitch effects such as flanging, etc.), and Delay to add evocative echo effects. Using the Multi Tap option in the Delay module creates unusual echo effects along with chorusing.

The Pitch module can switch its input between preamp or EQ signals. The Delay moduleÕs Delay Input Mix control chooses a blend between the output of the Pitch module, or the preamp or EQ signal (as selected by the Delay Input 1 switch).

Multi Tap delay is also available in this mode along with the standard

INPUT

PREAMP

OUTPUT

Pre-Amp Signal

Direct Output

Effects O

Delay

Preamp

Reverb

REVERB + CHORUS

3 BAND

Configuration 5

Mono

Stereo

mono, stereo, and ping-pong delays. Up to eight taps are available along the delay line; each tap has variable delay time, panning, volume, and feedback. For more details about multitap delays, see section 4.5.

Panning and Tremolo are available in this configuration, and are in series with the EQ signal line. The Preamp Signal Pre/Post EQ switch chooses whether the Preamp Output comes from before or after the EQ.

#5 Preamp > 3 Band EQ > Reverb

Input

Output

Pre/Post EQ

Output

utput

This is the recommended configuration when you want the best possible reverb sound. By restricting the number of effects, the QuadraVerb GT can devote its full computing power to creating awesome reverberation effects. However, EQ is still available for additional tone shaping, as is a simpler version of chorusing.

#6 Preamp > Ring Modulator > Delay > Reverb

RING MOD

INPUT

PREAMP

OUTPUT

Pre-Amp Signal

Direct Output

DELAY

REVERB

Effects

Delay

Reverb

Delay

Ouput

Delay &

Ring Up

Down

Configuration 6

Mono

Stereo

DELAY

Reverb

REVERB

RESON 1

RESON 2

RESON 3

RESON 4

RESON 5

INPUT

PREAMP

OUTPUT

Pre-Amp Signal

Direct Output

Effects

Delay

Reverb

Delay

Resonator

Configuration 7

Mono

Stereo

Modulator Output

Input Mix

Shift Mix

Reverb Shift Mix

Input 1

Output

Input Mix

Input 2

Output

This configuration features the Ring Modulation in conjunction with Delay and Reverb. The Ring Modulator is not available in other configurations.

The Ring Modulator produces two outputs, both of which are mathematically derived (sum and difference frequencies) from the input signal. The Ring Modulator output can pan between these two output signals, as can the Delay & Reverb Shift Mix control, which chooses a blend of both outputs to send to the Delay and Reverb inputs.

#7 Preamp > Resonators > Delay > Reverb

Input Mix

Output

This configuration features the Resonators in conjunction with Delay and Reverb.

Input 1

Output

Input Mix

Input 2

Output

#8 Preamp > Sampling

SAMPLING

INPUT

PREAMP

OUTPUT

Pre-Amp Signal

Direct Output

Sampling

Trigger In

Pitch In

Trigger

Audio

MIDI

Looping

Start

Length

Configuration 8

Mono

Stereo

In this configuration, you can record sounds (processed by the Preamp if desired) into the QuadraVerb GT and play them back in a variety of ways.

Trigger

Note

On-Off

Output

CHAPTER 3 - BASIC EDITING TECHNIQUES

Editing is the key to using the QuadraVerb GT to its fullest potential. If you like a sound but want more reverb, less treble, more distortion, or whatever, editing is the answer.

Make sure that if you develop a custom set of programs, that you save your data to some form of MIDI system exclusive storage device, like the Alesis DataDisk (see sections 5.5-5.6).

3.1 HOW EDITING WORKS

The QuadraVerb GT contains five Effects Groups, each with its own corresponding front panel selection button: Reverb, Delay, Pitch, Equalization (EQ), and Guitar Preamp (Pre-Amp). These all contain editable parameters. Four other editable functions (with front panel buttons) are also available: MIDI, Name/Mod, Mix, and Configuration. The basic editing procedure is the same for whatever you want to edit; weÕll get into specifics later.

1. Select What You Want to Edit

Push the button associated with the Effect Group (Reverb, Delay, Pitch, EQ, Preamp) or function (MIDI, Config, Mix, Mod) you want to edit. The LED in the middle of the button will light.

2. Select the Page with the Parameter to be Edited

Each effect/function includes several pages. Each page shows the name and value of one (or sometimes more) parameters, and each parameter controls some particular aspect of the QuadraVerb GTÕs sound or operation. Most effects or functions require multiple pages to show all available parameters.

The page's upper display line shows the parameter name, and the lower line, the parameter value. Press the PAGE UP and DOWN buttons to select a page containing a parameter to be edited. The harder you press

the PAGE button, the faster the pages will scroll.

NOTE: The NAME/MOD button is the exception to this rule,as it

accesses both program name parameters as well as the QuadraVerb GT's MIDI modulation parameters. (See section 3.4)

3. Change the Parameter's Value

A parameter's value is like the Òcalibration scaleÓ a knob would point to on a regular guitar effects box, except instead of setting a physical device to a certain position, you see the parameter setting on the screen and adjust its value with a pair of buttons (increase/decrease value). For example, a volume knob on a guitar amplifier might be set to 5 would be the same as a volume parameter with a range of 00-99 set to 50. In either case, the control is set halfway.

A small line under a parameter indicates it can be edited. Use the

VALUE buttons to change a parameter's value. The harder you press the VALUE button, the faster the values will scroll.

4. Edit More Parameters

Repeat steps 1-3 until all the parameters you want to edit have been edited.

Notes

¥ All edits are not made to the original program, but to a copy of the

program that resides in a special place in QuadraVerb GT memory

called the Edit Buffer. A decimal point to the right of the program

number indicates that you are listening to an edited program in the

Edit Buffer. You must save an edited program by transferring the edit

buffer contents into the original program memory location before

selecting another program, or your edits will be lost.

¥ Each parameter has a default value that works well in most

applications. To return to this value, press both VALUE buttons

simultaneously. See chart on page 113.

3.2 COMPARING EDITED AND NON-EDITED VERSIONS OF PROGRAMS

Editing a program does not change the original version permanently until it is stored (see section 3.3 below). Because your edited version is separate from the original, you can compare the two versions without altering the original. This can be very useful if you ÒovereditÓ a program and want to see if the edited version really does represent an improvement over the original program. To compare:

1. Press the PROG button.

2. Press the PAGE UP button. The display says * COMPARING * and

you can hear the program you started with.

3. To exit compare mode, hit any button except a VALUE button. IF YOU PRESS A VALUE BUTTON, YOUR EDITED VERSION WILL BE LOST.

3.3 SAVING (STORING) EDITED PROGRAMS

1. To save an edited program, press the STORE button. The LED in the middle of the button will light. The display says:

STORE PROGRAM AT LOCATION: X X

Éwhere XX is the original program number.

2. To save to a different program number, press the appropriate VALUE

button to select the desired program location.

Warning! This edited program will overwrite the program stored in

this location. Before saving, make sure the program to be overwritten

is expendable.

3. Press the STORE button a second time to save the

program. The display will say PROGRAM STORED.

3.4 RENAMING PROGRAMS

You may want to give your edited program a distinctive name.

1. Press the NAME/MOD button. The LED in the middle of the button

will light and the display says:

EDIT NAME: Ò(Name of Song)Ó

2. Use the PAGE buttons to select the character to be changed. Characters

available (in addition to a blank space, Yen symbol, and left and right

arrows) are:

!Ò#$%&Õ ()*+,-. /012345 6789: ; < =>? @ABC DE F GHI J KLMNOP Q RS TUVWX YZ[]^_` abcdef g hi j kl mn opqr st u vwxyz{ | }

3. Use the VALUE buttons to select the desired character. To enter a

space, press both VALUE buttons simultaneously (or press the

DOWN VALUE button and scroll to the last character of the character

list, which is a blank space).

4. Repeat steps 2 and 3 until the program is named.

6. To store the name, press the STORE button twice.

7. Press any button other than PAGE or VALUE to exit the Name page.

3.5 RECALLING INDIVIDUAL FACTORY PROGRAMS

1. Press STORE. The LED in the middle of the button will light.

2. Press the PAGE UP button to select the Recall page. The display says:

RECALL ALESIS PROG Y Y INTO XX

3. Press either VALUE button to select the program to be recalled (the first parameter).

4. Press the PAGE UP button again to move the cursor under the second parameter.

5. The factory program will be recalled into the program selected as the second parameter. Press either VALUE button to select this program number.

6. Press STORE to complete the recalling operation.

3.6 RECALLING ALL FACTORY PROGRAMS

1. Press STORE. The LED in the middle of the button will light.

2. Press the PAGE UP button three times. The display says:

RECALL ALL 90 ALESIS PROGRAMS

3. Press STORE and all the program locations will be occupied by factory programs. Any other data will be overwritten.

CHAPTER 4 Ð EDITING CONFIGURATION PARAMETERS

In this section, weÕll describe how to select a configuration, then how to edit the parameters for each configuration. Please refer to the configuration block diagrams in section 2.2 for details on how particular mixing and switching parameters work with a particular configuration.

Remember that after selecting a configuration, the PAGE buttons select the various pages with different parameters. If a page has more than one parameter, the PAGE buttons also move between those parameters.

Once a parameter is selected, as indicated by a cursor (small underline), use the VALUE buttons to change the parameter value.

Sampling is such a different type of application that it has its own chapter. All sampling parameters are covered in that chapter.

Important! In many of the following sections, a diagram will show what you can expect to see when you call up a particular page. The parameter value shown for each page will usually be representative, but when you actually call up the page on the QuadraVerb GT, a different parameter value from the one shown in the manual may appear.

4.1 SELECTING A CONFIGURATION

1. Select the program whose configuration you want to change or edit.

2. Press the CONFIG button. The LED in the middle of the button will

light.

3. Use the VALUE buttons to select the desired configuration.

4.2 SELECTING A CONFIGURATION MODULE FOR EDITING

After selecting the desired configuration, press the button associated with the module you want to edit (REVERB, DELAY, PITCH, EQ, or MIX). If the module is not used in a particular configuration, the display briefly says:

NOT USED IN THIS

CONFIGURATION

4.3 EDITING PREAMP PARAMETERS

Since all configurations use the Preamp section, weÕll describe those edits first.

Press the PRE-AMP button. Its LED will light and the first page will show the compression amount. Use the PAGE buttons to access the various pages described below.

Compression

A compressor reduces the guitar's dynamic range to increase sustain and even out amplitude peaks. Recordings often use compression to give a smooth guitar sound. Compression is an important first link in any guitar effects chain.

There are seven compression amounts (1-7) with higher numbers giving more compression. Compression can also be turned off.

Overdrive

The Overdrive stage provides a Òrhythm guitar crunchÓ type of sound as opposed to the smoother, more biting Distortion module (which is used more for leads). The overdrive stage also gives a fuller, more harmonically dense sound than the Distortion module. The QuadraVerb GT's Overdrive stage utilizes both odd and even order harmonics to

COMPRESSION:

0 7

attain a warmer, fuller, more tube-like sound.

There are seven overdrive amounts (1-7) with higher numbers giving more distortion. Overdrive can also be turned off.

Experiment with various settings of both overdrive and distortion to produce a variety of different tones. It is important to note that you can get quite a different tone from combining Overdrive and Distortion in addition to using either of the effects independently.

Distortion

The QuadraVerb GT includes several distortion options, as selected with the VALUE buttons.

OVERDRIVE:

0 7

DISTORTION:

O FF

Off No distortion 1 Mild distortion for rhythm guitar & smooth leads. 2 A little more bite for leads. 3 Mild rock distortion for rhythm guitar and crunchy leads. 4 Rock distortion for lead or rhythm. 5 Bright, highly overdriven sound for lead and heavy rhythms. 6 Mild heavy metal distortion for rhythm guitar and metal leads. 7 Heavy metal distortion for lead or rhythm with tons of edge. 8 Big shred sound for lead.

Preamp Tone

The display says:

There are three options: Flat (doesn't affect the sound), Presence (provides a treble boost), and Bright (provides an treble boost/midrange

PREAMP TONE: F LAT

cut). Both the Preamp Tone and Bass Boost parameters can be used to shape the initial sound of your tone, while the EQ and/or Resonators (see section 4.8) can be used for fine tuning.

Bass Boost

The display says:

Set to On for a fuller, bassier sound. Otherwise, set to Off. The Bass Boost can also be used to get a fuller sound at low volumes.

Cabinet Simulator

The display says:

BASS BOOST:

O N

CAB SIMULATOR: O N

Much of the sound of an electric guitar doesn't come from effects or the power amp, but from the sound of the speaker cabinet. When feeding a recording console or PA, choose either Cabinet 1 (sounds like two 10Ó speakers) or Cabinet 2 (simulates a cabinet with four 12Ó speakers). When using the QuadraVerb GT with a standard guitar amp, leave this set to Off. However, if you like the sound of the cabinet simulators while using a guitar amp, it's perfectly OK to use these settings. You be the judge.

Effect Loop

The display says:

The QuadraVerb GT's Effect Loop is designed to let you insert other signal processing devices into your signal chain. The effect send and return jacks also allow you to use the analog and digital sections independently as described in section 2.1.

EFFECT LOOP:

I N

Noise Gate

The display says:

Extreme compression and distortion settings, as well as hum and noise picked up from your guitar pickups, can add undesirable noise. The noise gate cuts off the signal when it dips below a certain threshold level, as set by the noise gate parameter value. Set the threshold just above the noise so that your playing exceeds the threshold and passes through the gate, but residual noise that is present when you are not playing will not exceed the threshold and will be blocked.

You can set the Quadraverb GT's noise gate threshold manually, or you can enable the Auto Gate feature to set it for you. The auto gate estimates a moderate gate level for you, depending on the amount of compression and distortion you have chosen.

NOISE GATE:

A UTO

To set the noise gate manually, don't play your guitar. If you hear noise, start with the value at Off and slowly increase value (up to 16) until the noise goes away. With extremely noisy signals, you may have to compromise a bit and have either a little bit of noise get through, or have more of a noteÕs decay get cut off.

Preamp Out Level

The display says:

The Preamp Out Level is located in the Quadraverb GT's digital section, post-effects return. It controls the level of all of the analog effects as they are fed into the processor that generates all of the QuadraVerb GT's digital effects. Proper adjustment of the Preamp Out Level allows you to prevent overloading of this processor without sacrificing the input level necessary to provide sufficient gain to drive the QuadraVerb GT's analog section properly.

PREAMP OUT LEVEL

0 0

To set the Preamp Out Level, do the following:

1. Press the BYPASS button and play your guitar. Even though you won't

hear any effects, check the QuadraVerb GT's input level meter. If the red clip light still lights, turn down the Input knob.

2. If the clip LED doesn't light with the BYPASS button pressed, press it again to disengage the bypass function. Play your guitar and decrease the Preamp Out Level until the level indicator stops clipping.

4.4 EDITING REVERB PARAMETERS

Reverb Type (configs 1, 2, 5, 6, 7)

In configuration 5, the following reverb type parameters are followed by the number 2 instead of 1 to remind you that this configuration uses the ultra-high-performance reverb algorithm.

¥ Plate 1 Provides a bright reverb sound that's popular with vocals and

snares. ¥ Room 1 You can program the room's size and surface (harder or

softer). ¥ Chamber 1 Simulates the acoustic Òecho chambersÓ that were built

into studios prior to the days of high-quality electronic reverb. ¥ Hall 1 This provides a concert hall ambience with long, dense

reflections. ¥ Reverse 1 This type of reverb does not exist in nature; reflections get

louder over time, until they are cut off upon reaching a maximum

volume level.

Reverb Input 1 (configs 1, 2, 6, 7)

The number in [brackets] indicates the configuration in which the parameter is found. Multiple numbers indicate that the parameter is found in more than one configuration.

¥ Preamp Output [1, 2, 6, 7] The reverb input signal comes from the

preamp output.

¥ EQ Output [1] The reverb input signal comes after the EQ module. ¥ Lezlie Output [2] The reverb input signal comes after the Lezlie

module. ¥ Ring Output [6] The reverb signal comes from the Resonator Output. ¥ Resonator Output [7] The reverb signal comes from the Resonator

Output.

¥ Pitch Output [1] The reverb signal comes from the pitch module

output. ¥ Delay Mix Input [1, 2, 6, 7] The reverb signal comes from the Delay

input, which consists of a blend, selected by the Delay Input Mix

parameter, of the pitch output and either pre- or post-EQ signal (as

selected by the Delay Input 1 switch).

Reverb Input (config 5)

¥ Preamp Output [5] The reverb input signal comes from the preamp

output. ¥ EQ Output [5] The reverb input signal comes after the EQ module.

Reverb Input 2 (configs 1, 2, 6, 7)

¥ Delay Output [1, 2, 6, 7] The reverb input signal comes from the delay

output. ¥ Pitch Output [1] The reverb input signal comes from the pitch

module output. ¥ Lezlie Output [2] The reverb input signal is post-Lezlie. ¥ Ring Output [6] The reverb input signal comes from the ring

modulator output. ¥ Resonator Output [7] The reverb input signal comes from the

resonator output.

Reverb Input Mix (configs 1, 2, 6, 7)

The display shows:

REVERB INPUT MIX

1 ¬ 0 0® 2

When set to 00, the signal sources selected in Reverb Input 1 and Reverb Input 2 are mixed equally into the reverb.

Larger numbers with the arrow pointing toward 1 indicate that more of the signal from Reverb Input 1 will be selected. When set to ¬99, only

the signal from Reverb Input 1 will feed the reverb.

Larger numbers with the arrow pointing toward 2 indicates that more of the signal from Reverb Input 2 will be selected. When set to 99®, only

the signal from Reverb Input 2 will feed the reverb.

Reverb Predelay (configs 1, 2, 5, 6, 7)

The display shows:

REVERB PREDELAY: 0 01 milliseconds

With reverberation, it takes a few milliseconds before the signals from a sound source go through the acoustic space and encounter a surface, thus creating the first series of reflections. Predelay is the amount of delay that occurs before the first reflections begin. This parameter is variable from 1 to 140 ms. The larger this number, the greater the perceived size of the acoustic space.

NOTE: Don't confuse the Reverb Predelay parameter with the parameters found in the delay section. The Reverb Predelay is a function of the Reverb section.

Reverb Predelay Mix (configs 1, 2, 5, 6, 7)

The display shows:

PREDELAY MIX:

PRE ¬ 9 9® POST

This parameter lets you mix some of the non-predelayed signal into the reverb input. This is useful if you want to hear a bit of reverb immediately, with more reverb coming in after the amount of time set

by the predelay parameter.

When set to 00, the predelayed and non-predelayed signals are mixed equally into the reverb.

Larger numbers with the arrow pointing toward POST indicate that more of the predelayed signal will be selected. When set to 99® only the

predelayed signal will feed the reverb.

Larger numbers with the arrow pointing toward PRE select more of the non-predelayed signal. When set to ¬ 99 only the non-predelayed signal

will feed the reverb.

Reverb Decay (configs 1, 2, 5, 6, 7)

The display shows:

REVERB DECAY:

4 0

This determines how long it takes for the reverb to fade out, on a scale of

00 (shorter) to 99 (longer).

Reverb Diffusion Amount (configs 1, 2, 5, 6, 7)

The display shows:

REVERB DIFFUSION AMOUNT: 1

Diffusion determines the ÒthicknessÓ of the reverb sound by altering the time that occurs between reverberant reflections. With lower diffusion settings, you may be able to actually hear the individual echoes that make up the overall reverb sound. With higher diffusion settings, the echoes increase in number and blend together. Greater diffusion works better with percussive sounds, whereas less amounts of diffusion work well with vocals and other sustained sounds. This parameter is variable from 1 to 9.

Reverb Density (configs 1, 2, 5, 6, 7)

The display shows:

REVERB DENSITY:

Usually, in natural acoustic spaces, some time elapses between the first reflection and all other reflections that make up the reverb sound. If you listen to only the reverb with Density set to 1, you will hear the source sound repeat (the first reflection), a short bit of silence, then the onset of the rest of the reverb. Increasing the Density shortens the time between the first reflection and the remaining reverb reflections. At the maximum setting of 9, the reverb will seem to ÒexplodeÓ since the first reflection will no longer be perceived as a separate echo.

This parameter is very useful with percussive sounds, since an isolated first reflection may sound like an additional percussive Òhit.Ó It is available in all of the reverbs except for Hall 1 and Hall 2.

Reverb Low Frequency Decay (configs 1, 2, 5, 6, 7)

The display shows:

LOW FREQUENCY DECAY: - 4 0

Separating the decay times for the high and low frequencies changes the timbral quality of the reverb over time. The value is always a negative number since this parameter shortens the time of reverb with low frequency content compared to the master reverb decay time parameter.

Reverb High Frequency Decay (configs 1, 2, 5, 6, 7)

The display shows:

HIGH FREQUENCY DECAY: - 4 0

Separating the decay times for the high and low frequencies changes the timbral quality of the reverb over time. The value is always a negative number since this parameter shortens the time of reverb with high frequency content compared to the master reverb decay time parameter.

Reverb Gate Status (configs 1, 2, 5, 6, 7)

The display shows:

REVERB GATE:

O N

The level of natural, acoustic reverb decays gradually to zero. Gated reverb abruptly shuts off the reverb ÒtailÓ after a user-settable elapsed time. The next few parameters control the time the gate stays Òopen,Ó the amount of time it takes to Òclose,Ó and the residual reverb level that remains after the gate has closed.

NOTE: Don't confuse the Reverb Gate Status parameter with the Noise Gate parameter found in the preamp section. The Reverb Gate is a function of the Reverb section.

Reverb Gate Hold Time (configs 1, 2, 5, 6, 7)

The display shows:

REVERB GATE HOLD TIME: 0 0

This parameter sets the amount of elapsed time (00-99) before the gate closes and cuts off the reverb tail.

Reverb Gate Release Time (configs 1, 2, 5, 6, 7)

The display shows:

REVERB GATE RELEASE TIME: 0 0

This parameter determines the period of time (00-99) over which the gate closes. 00 gives an extremely sharp cutoff; 99 gives a more gradual decay.

Reverb Gated Level (configs 1, 2, 5, 6, 7)

The display shows:

REVERB GATED LEVEL: 0 0%

The gate does not have to close to a zero level. This parameter sets the final gate level, from 00 (complete gating action; no residual reverb sound) to 99 (no gating action; reverb sound only).

4.5 EDITING DELAY PARAMETERS

Delay Type (configs 1, 2, 3, 4, 6, 7)

There are four different types of delay.

¥ Mono Delay This sends the same delay signal to both output

channels. The maximum delay depends on the chosen configuration:

Configurations 1, 2, 6 775, 800, 800 ms respectively

Configurations 3, 4 1500, 1470 ms respectively

Configuration 7 720 ms

¥ Stereo Delay Each audio channel has its own individual delay

settings. The maximum delay depends on the chosen configuration:

Configurations 1, 2, 6 375, 400, 400 ms respectively

Configurations 3, 4 750, 705 ms respectively

Configuration 7 320 ms

¥ Ping-Pong Delay This delay bounces the delayed signal from left to

right audio outputs, with the speed determined by the delay time.

The maximum delay depends on the chosen configuration:

Configurations 1, 2, 6 375, 400, 400 ms respectively

Configurations 3, 4 750, 705 ms respectively

Configuration 7 320 ms

¥ Multi Tap Delay Available only in configuration 4, this offers up to 8

different taps along a delay line, with variable panning, volume,

delay time, and feedback. The total delay of all taps cannot exceed 1470

ms.

You might want to think of each individual tap as a mono delay line

(being fed from a common source) with its own delay time feedback

and volume parameters that can be panned anywhere in the stereo

field.

Delay Input 1 (configs 1, 4, 6, 7)

¥ Preamp Output The delay input signal comes from the preamp

output. ¥ EQ Output The delay input signal comes after the EQ module.

Delay Input (config 3)

¥ Preamp Output The delay input signal comes from the preamp

output. ¥ EQ Output The delay input signal comes after the EQ module.

Delay Input Mix (configs 1, 2, 4, 6, 7)

The display shows:

DELAY INPUT MIX:

1 ¬ 0 0® (MODULE)

The lower line shows the blend between the signal selected by Delay Input 1 and one of several module outputs, depending on the configuration:

Configurations 1, 4 Pitch Configuration 2 Lezlie Configuration 6 Ring Modulator Configuration 7 Resonator

When set to 00, the signal sources selected in Delay Input 1 and the module output are mixed equally into the delay.

Larger numbers with the arrow pointing toward 1 indicate that more of the signal from Delay Input 1 will be selected. When set to ¬99, only the

signal from Delay Input 1 will feed the delay.

Larger numbers with the arrow pointing toward the module name indicate that more of the signal from the module output will be selected.

When set to 99®, only the module output will feed the delay.

Delay Time (configs 1, 2, 3, 4, 6, 7)

With Mono or Ping Pong selected as the delay type, the display shows:

DELAY TIME: 3 00 milliseconds

With Stereo selected, this will say LEFT DELAY TIME. This sets the time between successive delay signals, and is variable in 1 ms increments from 1 millisecond to the maximum delay available in the configuration.

As mentioned under Delay Type, the maximum delay depends on the selected reverb type and the configuration.

Delay Feedback (configs 1, 2, 3, 4, 6, 7)

With Mono or Ping Pong selected for delay type, the display shows:

DELAY FEEDBACK:

3 3%

With Stereo selected, this will say DELAY FEEDBACK LEFT. Increasing the feedback increases the number of successive echoes; each echo will be softer than its predecessor.

Right Delay Time (configs 1, 2, 3, 4, 6, 7)

This page appears only if Stereo is selected as the delay type, and says:

RIGHT DELAY TIME:

4 00 milliseconds

This sets the time between successive delay signals, and is variable in 1 ms increments from 1 millisecond to the maximum delay available in the configuration.

As mentioned under Delay Type, the maximum delay depends on the selected delay type and the configuration.

Delay Feedback Right (configs 1, 2, 3, 4, 6, 7)

This page appears only if Stereo is selected as the delay type, and says:

DELAY FEEDBACK

RIGHT: 3 3%

Increasing the feedback increases the number of successive echoes; each echo will be softer than its predecessor.

Multi Tap Number (config 4 only)

The display says:

TAP NUMBER:

This parameter selects the tap to be edited on subsequent pages.

IMPORTANT: When the Delay Time, Volume, Panning, or Feedback pages are selected, you can select the next higher-numbered tap by pressing the DELAY button. Going past 8 returns you to 1.

Multi Tap Delay Time (config 4 only)

The display says:

TAP X DELAY TIME

0 125 millisecs

X is the number of the tap selected for editing. Note that each tapÕs delay is cumulative. Example: If tap 1 is 150 ms and you want tap 2 to be 300 ms and tap 3 to be 400 ms, set tap 2Õs delay time to 150 ms (150+150=300) and tap 3Õs delay time to 100 (150+150+100=400).

If you change a tapÕs delay time, all higher numbered taps will be offset by the same amount that you changed the tapÕs delay time.

Multi Tap Volume (config 4 only)

The display says:

TAP X VOLUME:

X is the number of the tap selected for editing. This sets the volume of the selected tap.

5 0

Multi Tap Panning (config 4 only)

The display says:

TAP X PANNING:

LEFT ¬ 0 0® RIGHT

X is the number of the tap selected for editing. This pans the tap output anywhere in the stereo field between full left (¬99) and full right (99®).

Center is 00.

Multi Tap Feedback (config 4 only)

The display says:

TAP X FEEDBACK:

0 0%

X is the number of the tap selected for editing. Increasing the feedback increases the number of successive echoes this tap will produce; each echo will be softer than its predecessor.

Multi Tap Master Feedback (config 4 only)

The display says:

MASTER FEEDBACK:

0 0%

This scales all feedback parameters simultaneously if you want to increase or decrease feedback without having to readjust each tapÕs feedback parameter.

4.6 EDITING PITCH PARAMETERS

Configurations 1, 2, 4, 5, and 6 can access the pitch parameters. However, the pitch parameters are quite different for these configurations. Parameters are covered in the following order:

Configurations 1 and 4 use pitch parameters in a relatively traditional manner (chorus, flange, pitch detune, and phase shifter).

Configuration 2 uses the pitch module to access Lezlie effects.

Configuration 5 uses the pitch module to access Reverb Chorus effects.

Configuration 6 uses the pitch module to access Ring Modulator effects.

Pitch Mode (configs 1, 4)

¥ Mono Chorus Splits the signal into two lines: one is unprocessed,

while the other has its pitch changed in a cyclical manner. Mixing

these two together produces frequency response and amplitude

variations that create the sound of multiple instruments playing en

ensemble. ¥ Stereo Chorus This is similar to mono chorus, but splits the signal

into two pairs of two lines (one pair per channel). As the delay time

in one channel is increasing, the other channelÕs delay is decreasing

and vice-versa. ¥ Mono Flange Similar to mono chorus, but with parameters

optimized for flanging. This effect imparts a whooshing, Òjet

airplaneÓ sound to the signal being processed. ¥ Stereo Flange Similar to stereo chorus, but with parameters

optimized for flanging. ¥ Pitch Detune Detunes a signal slightly sharp or slightly flat. This is

often used to obtain Ò12-stringÓ effects from a six-string guitar. ¥ Phase Shifter The Phase Shifter shifts the phase of certain frequencies

to produce a comb filter effect. This produces a sound that is similar

to flanging, but more subtle.

IMPORTANT! For the deepest pitch effects, the dry and processed signal

levels (found in the Mix section) should be equal (50% dry and 50%

effect).

Pitch Input (configs 1, 4)

¥ Preamp Output The pitch module input signal comes from the

preamp output. ¥ EQ Output The pitch module input signal comes after the EQ

module.

LFO Waveshape (Chorus only)

As mentioned earlier, in chorusing the pitch change is cyclical. There are two ways to modulate the pitch:

¥ Triangle This produces a smooth, regular chorusing sound. ¥ Square The time delay jumps between two values, producing a more

radical modulation effect.

LFO Speed (Chorus and Flange only)

The display says:

LFO SPEED:

0 4

This parameter alters the rate of pitch modulation, from 01 (slow) to (fast) 99.

LFO Depth (Chorus and Flange only)

The display says:

LFO DEPTH:

6 1

This parameter determines how much the modulation affects pitch. The higher the number, the greater the degree of pitch modulation. High LFO depth settings may make a signal seem out of tune unless you slow down the LFO speed.

Pitch Feedback (Chorus and Flange only)

The display says:

PITCH FEEDBACK:

0 0%

Pitch feedback sends some of the output signal back to the input, from

00% to 99%. Higher numbers give a sharper, more resonant sound.

Trigger Flange (Flange only)

The display says:

TRIGGER FLANGE:

O FF

When on, a silence between incoming notes resets the flanger to its highest point, and as soon as a new note appears, the flanger sweeps downward. If you continue to holding a sustaining note, the flanger will sweep according to the LFO parameters.

Trigger flange works best with notes having a percussive attack.

Pitch Detune (Detune only)

The display says:

DETUNE AMOUNT:

This sets the amount of detuning in cents from -99 to +99 (+ is sharp, - is flat).

- 1 5

Phaser Speed (Phaser only)

The display says:

This parameter alters the rate of phaser modulation, from 01 (slow) to (fast) 99.

Phaser Depth (Phaser only)

The display says:

This parameter determines the degree to which the modulation affects the phaser effect. Higher numbers increase the phaser sweep.

PHASER SPEED:

0 4

PHASER DEPTH:

9 5

Lezlie Stereo Separation (config 2 only)

The display says:

LEZLIE STEREO SEPARATION: 8 0

This parameter determines the extent to which bass and treble will be spread across the stereo image. Higher numbers increase the degree of separation.

Lezlie Motor Control (config 2 only)

The display says:

LEZLIE MOTOR CONTROL: O N

Because the speakers in a mechanical rotating speaker system weigh a lot, they take a while to get up to speed from a dead stop, and take a while to slow down when turned off. Turn this parameter off to slow the speakers down to a stop, or on to speed them up to the speed set on the next page; itÕs a natural for MIDI control (sections 6.1-6.2).

Lezlie Speed (config 2 only)

The display says:

LEZLIE SPEED: F AST

Mechanical rotating speaker systems generally offer two speeds, slow and fast. The QuadraVerbÕs simulated rotating speaker gives you two speeds also.

Ring Modulator Spectrum Shift (config 6 only)

The display says:

SPECTRUM SHIFT:

1 00Hz

This determines how much the up and down harmonic signals will be shifted with respect to the original input signal.

Ring Modulator Output Mix (config 6 only)

The display says:

RING MOD. OUTPUT

MIX: DOWN¬ 0 0®UP

This varies the balance between the up and down signals. At 00, there is an equal blend of both signals. At 99®, the output consists entirely of the

upshifted signal. At ¬99, the output consists entirely of the downshifted signal. (With the QuadraVerb GT, excessive downshifting will not wear out the clutch. There is no clutch.)

Ring Modulator Delay/Reverb Input (config 6 only)

The display says:

DEL/REVERB INPUT

MIX: DOWN¬ 0 0®UP

The ring modulator signal that can optionally feed the Delay and/or Reverb inputs can consist of any blend of the up and downshifted

signals. At 00, there is an equal blend of both signals. At 99®, the output consists entirely of the upshifted signal. At ¬99, the output consists

entirely of the downshifted signal.

Reverb Chorus Mode (config 5 only)

The display says:

REVERB CHORUS:

O N

Don't confuse this parameter with the Chorus found in the Pitch module. Turning on the Reverb Chorus will make the reverb modulate and sound "swimmy".

4.7 A WORD ABOUT EQ, RESONATORS, AND GUITAR TONE

Resonators, EQ, and Tone

A guitar tone is a complex thing. Factors as diverse as the wood, size, and shape of a guitar can alter its tone. Strings, pickups, hardware, active electronics, and a myriad of other factors make up the distinctive and elusive intangible known as "tone".

All of these factors, however, have one thing in common: they alter the harmonic structure of the guitar's sound. While the fundamental frequency of A above middle C is 440 Hz, the timbre of the note itself is made up of not only the fundamental frequency, but a series of overtones (harmonics) as well. When you play an A on one guitar, the note will have a unique sound. When you play an A on a different guitar, the note will have the same 440 Hz fundamental, but can have a completely different sound. This is due to the difference in overtones. This difference, which can be caused by all of the previously mentioned factors, means that every guitar setup has its own unique sound. Its own unique tone.

The Quadraverb GT's EQ/Resonator section gives you specific control over fundamental and harmonic overtones in your guitar's tone.

The parametric EQ gives you precise control of the fundamentals of your guitar tone by increasing or decreasing the amplitude of specific pitches over a variable bandwidth.

By tuning the resonators and controlling their amplitude and delay resonance you can accentuate harmonics in your guitar tone. A resonator is a special filter whose response is so sharp that it actually imparts a pitch to any signal going through it.

Programmable Tone Curves

To simplify the process of getting a great guitar sound (after all, you'd rather play, right?), each configuration in the Quadraverb GT includes six preset tone curves with EQ and/or resonator parameters that have been pre-programmed to yield certain types of guitar tones with a minimum of programming. You can easily select one of these tones and store it to the program you're working on, or, if you wish, you can use the presets as starting points for creating your own custom tone curves. You might want to create tone curves for specific programs to be used with specific guitars, for example.

4.8 EDITING 3-BAND EQ AND RESONATOR PARAMETERS (config 1)

EQ Preset

The display says:

EQ PRESET:

U SER

This page allows you to access 6 preset tone curves, or to create your own curve from scratch. The EQ and/or resonator parameters of the 6 preset curves have been programmed to give you a variety of tones to choose from. To listen to each tone curve, press the Up VALUE button which will scroll through presets 1 through 6. If you find a preset you like, you can store it to the current program by pressing the STORE button twice. To use a preset as a starting point for your own custom tone curve, simply edit its EQ and/or resonator parameters until you have the sound you want (for more about the specific parameters, see their explanations below). Then press the STORE button twice. This will store the edited tone curve as part of the program that you are currently working on. The next time you call up that program, your edits will appear as the program's USER curve.

Configuration 1 has 6 tone curves. They are:

¥ #1 (3 Band EQ Mode) ¥ #2 (3 Band EQ Mode)

¥ #3 (3 Band EQ Mode) ¥ #4 (3 Band EQ Mode) ¥ #5 (2 Resonator + 1 Band EQ Mode) ¥ #6 (2 Resonator + 1 Band EQ Mode)

EQ Mode

The display says:

EQ MODE: R ESONATORS + EQ

This page switches between the 3 BAND EQ and RESONATORS + EQ modes.

Resonator Tune (Resonators + EQ mode only)

The display says:

RESONATOR 1 TUNE

+ 0 0 SEMI TONE

The PAGE buttons switch between the 2 resonators, as shown by the upper line. The VALUE buttons tune the resonators in semitones over a five-octave range, from -24 semitones to +36 semitones.

Resonator Decay (Resonators + EQ mode only)

The display says:

RESONATOR 1 DCY:

9 0

This sets the decay time for resonator 1. The higher the number, the longer the decay.

Resonator Amplitude (Resonators + EQ mode only)

The display says:

RESONATOR 1 AMP:

9 9

This sets the volume level for resonator 1. The higher the number, the louder the output of the resonator. Please note that if both resonators are assigned a value of 00, you will not hear any sound in this configuration.

Pressing the PAGE up button will show the Tune, Decay, and Amplitude pages for Resonator 2.

Low EQ Frequency (3 Band EQ mode only)

The display says:

LOW EQ FREQUENCY

2 00Hz

This sets the frequency below which all signals will be boosted or cut by the amplitude amount set on the next page.

Low EQ Amplitude (3 Band EQ mode only)

The display says:

LOW EQ AMPLITUDE

+ 0 0.00dB

This sets the amount of boost (positive numbers) or cut (negative numbers) at the Low EQ Frequency set on the previous page.

Mid EQ Frequency

The display says:

The midrange filter is a parametric type. This parameter sets the midrange frequency at which signals will be boosted or cut.

Mid EQ Bandwidth

The display says:

Bandwidth refers to the width (range of frequencies) of the band of frequencies that will be affected by the EQÕs boost and cut values. Example: A bandwidth of one octave boosts a wider range of frequencies than a bandwidth of 0.2 octaves.

MID EQ FREQUENCY

2 000Hz

MID EQ BANDWIDTH

1 .00 OCTAVES

Mid EQ Amplitude

The display says:

This sets the amount of boost (positive numbers) or cut (negative numbers) at the Mid EQ Frequency set on the Mid EQ Frequency page.

MID EQ AMPLITUDE

+ 0 0.00dB

High EQ Frequency (3 Band EQ mode only)

The display says:

HIGH EQ FREQUENCY

0 8000Hz

This sets the frequency above which all signals will be boosted or cut by the amplitude amount set on the next page.

High EQ Amplitude (3 Band EQ mode only)

The display says:

HIGH EQ AMPLITUDE

+ 0 0.00dB

This sets the amount of boost (positive numbers) or cut (negative numbers) at the High EQ Frequency set on the previous page.

4.9 EDITING LEZLIE EQ PARAMETERS (config 2)

Configurations 2Õs EQ has one page that adjusts the timbre of the rotating speaker sound.

High Rotor Level

The display says:

HIGH ROTOR LEVEL

+ 0 0dB

Rotating speakers generally have two different speaker drivers, one for high, and one for low frequencies. This parameter adjusts the level of the high frequency speaker from -20 dB lower than the low frequency speaker to +06 dB higher. More positive numbers increase the overall brightness of the sound.

4.10 EDITING 11-BAND GRAPHIC EQ PARAMETERS (config 3)

EQ Preset

The display says:

EQ PRESET:

U SER

This page allows you to access 6 preset tone curves, or to create your own curve from scratch. The EQ parameters of the 6 preset curves have been programmed to give you a variety of tones to choose from. To listen to each tone curve, press the Up VALUE button which will scroll through presets 1 through 6. If you find a preset you like, you can store it to the current program by pressing the STORE button twice. To use a preset as a starting point for your own custom tone curve, simply edit its EQ parameters until you have the sound you want. Then press the STORE button twice. This will store the edited tone curve as part of the program that you are currently working on. The next time you call up that

program, your edits will appear as the program's USER curve.

Configuration 3 has 6 tone curves. They are:

¥ #1 (Graphic EQ Mode) ¥ #2 (Graphic EQ Mode) ¥ #3 (Graphic EQ Mode) ¥ #4 (Graphic EQ Mode) ¥ #5 (Graphic EQ Mode) ¥ #6 (Graphic EQ Mode)

Graphic Frequencies and Levels

The display says:

GRAPHЙЙЙЙЙЙЙЙЙЙ

16Hz

Configurations 3Õs EQ is an 11-band graphic equalizer. It only has one page, but all frequencies and levels are accessed from it, and the display shows a graph that indicates the approximate frequency response.

To program the graphic EQ:

¥ Use the PAGE buttons to select different bands, as shown in the

displayÔs lower left corner. The available bands are 16 Hz, 32 Hz, 62

Hz, 126 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz, 8 kHz, and 16 kHz.

¥ Use the VALUE buttons to select the desired amount of boost or cut.

The display will show a flashing dash that corresponds to the chosen

frequency band, which will move above or below the dotted

centerline to indicate a boosted or cut frequency band respectively.

4.11 EDITING 5-BAND EQ AND RESONATOR PARAMETERS (config 4)

EQ Preset

The display says:

EQ PRESET:

U SER

Configuration 4 has 6 tone curves. They are:

¥ #1 (5 Band EQ Mode) ¥ #2 (5 Band EQ Mode) ¥ #3 (5 Band EQ Mode) ¥ #4 (5 Resonator/3 Band EQ Mode) ¥ #5 (5 Resonator/3 Band EQ Mode) ¥ #6 (5 Resonator/3 Band EQ Mode)

EQ Mode

The display says:

This page switches between the 5 BAND EQ and 5 RESONATOR/3 EQ modes.

Low EQ Frequency

The display says:

This sets the frequency below which all signals will be boosted or cut by the amplitude amount set on the next page.

EQ MODE: 5 RESONATOR/3 EQ

LOW EQ FREQUENCY

2 00Hz

Low EQ Amplitude

The display says:

LOW EQ AMPLITUDE

+ 0 0.00dB

This sets the amount of boost (positive numbers) or cut (negative numbers) at the Low EQ Frequency set on the previous page.

Low Mid EQ Frequency (5 Band EQ mode only)

The display says:

LOW MID EQ FREQ

5 00Hz

All three midrange filters are parametric types. This parameter sets the lower midrange frequency at which signals will be boosted or cut.

Low Mid EQ Bandwidth (5 Band EQ mode only)

The display says:

LO MID EQ WIDTH

1 .00 OCTAVES

Low Mid EQ Amplitude (5 Band EQ mode only)

The display says:

This sets the amount of boost (positive numbers) or cut (negative numbers) at the lower midrange frequency set on the Low Mid EQ Frequency page.

Mid EQ Frequency

The display says:

All three midrange filters are parametric types. This parameter sets the midrange frequency at which signals will be boosted or cut.

LOW MID EQ AMP

+ 0 0.00dB

MID EQ FREQUENCY

2 000Hz

Mid EQ Bandwidth

The display says:

Mid EQ Amplitude

The display says:

MID EQ BANDWIDTH

1 .00 OCTAVES

MID EQ AMPLITUDE

+ 0 0.00dB

This sets the amount of boost (positive numbers) or cut (negative numbers) at the Mid EQ Frequency set on the Mid EQ Frequency page.

Hi Mid EQ Frequency (5 Band EQ mode only)

The display says:

HIGH MID EQ FREQ

0 5000Hz

All three midrange filters are parametric types. This parameter sets the high midrange frequency at which signals will be boosted or cut.

Hi Mid EQ Bandwidth (5 Band EQ mode only)

The display says:

HIGH MID EQ WDTH

1 .00 OCTAVES

Hi Mid EQ Amplitude (5 Band EQ mode only)

The display says:

HIGH MID EQ AMP

+ 0 0.00dB

This sets the amount of boost (positive numbers) or cut (negative numbers) at the high midrange frequency set on the High Mid EQ Frequency page.

High EQ Frequency

The display says:

This sets the frequency above which all signals will be boosted or cut by the amplitude amount set on the next page.

HIGH EQ FREQUENCY

0 8000Hz

High EQ Amplitude

The display says:

HIGH EQ AMPLITUDE

+ 0 0.00dB

This sets the amount of boost (positive numbers) or cut (negative numbers) at the High EQ Frequency set on the previous page.

Resonator Number (5 Resonator/3 EQ mode only)

The display says:

RESONATOR NUMB:

This selects a resonator to be edited. There are 5 resonators in 5 Resonator/3 EQ mode.

NOTE: While in the Resonator Tune, Resonator Decay, or Resonator Amplitude pages, pressing the EQ button repeatedly will step through the five resonators.

Resonator Tune (5 Resonator/3 EQ mode only)

The display says:

RESONATOR 1 TUNE

+ 0 0 SEMI TONE

The VALUE buttons tune the resonators in semitones over a five-octave range, from -24 semitones to +36 semitones.

Resonator Decay (5 Resonator/3 EQ mode only)

The display says:

RESONATOR 1 DCY:

9 0

This sets the decay time for each resonator. The higher the number, the longer the decay.

Resonator Amplitude (5 Resonator/3 EQ mode only)

The display says:

RESONATOR 1 AMP:

9 9

This sets the volume level for each resonator. The higher the number, the louder the output of the resonator. Please note that if all resonators are assigned a value of 00, you will not hear any sound in this configuration.

4.12 EDITING 3-BAND EQ (config 5)

EQ Preset

The display says:

EQ PRESET:

U SER

current program by pressing the STORE button twice. To use a preset as a starting point for your own custom tone curve, simply edit its EQ and/or resonator parameters until you have the sound you want (for more about the specific parameters, see their explanations below). Then press the STORE button twice. This will store the edited tone curve as part of the program that you are currently working on. The next time you call up that program, your edits will appear as the program's USER curve.

Configuration 5 has 6 tone curves. They are:

¥ #1 (3 Band EQ Mode) ¥ #2 (3 Band EQ Mode) ¥ #3 (3 Band EQ Mode) ¥ #4 (3 Band EQ Mode) ¥ #5 (3 Band EQ Mode) ¥ #6 (3 Band EQ Mode)

Low EQ Frequency

The display says:

This sets the frequency below which all signals will be boosted or cut by the amplitude amount set on the next page.

Low EQ Amplitude

The display says:

This sets the amount of boost (positive numbers) or cut (negative numbers) at the Low EQ Frequency set on the previous page.

LOW EQ FREQUENCY

2 00Hz

LOW EQ AMPLITUDE

+ 0 0.00dB

Mid EQ Frequency

The display says:

The midrange filter is a parametric type. This parameter sets the midrange frequency at which signals will be boosted or cut.

Mid EQ Bandwidth

The display says:

MID EQ FREQUENCY

2 000Hz

MID EQ BANDWIDTH

1 .00 OCTAVES

Mid EQ Amplitude

The display says:

This sets the amount of boost (positive numbers) or cut (negative numbers) at the Mid EQ Frequency set on the Mid EQ Frequency page.

MID EQ AMPLITUDE

+ 0 0.00dB

High EQ Frequency

The display says:

This sets the frequency above which all signals will be boosted or cut by the amplitude amount set on the next page.

High EQ Amplitude

The display says:

This sets the amount of boost (positive numbers) or cut (negative numbers) at the High EQ Frequency set on the previous page.

HIGH EQ FREQUENCY:

0 8000Hz

HIGH EQ AMPLITUDE:

+ 0 0.00dB

4.13 EDITING 5 BAND RESONATOR (config 7 only)

Resonator Gate Mode (config 7 only)

The display says:

RESONATOR GATE

MODE: M IDI GATED

There are two options, Continuous and MIDI Gated.

¥ In Continuous mode, the resonators are active at all times, with the

tuning set by the tuning parameter on subsequent pages.

¥ In MIDI Gated mode, the resonators track up to five notes you play on

a MIDI keyboard. Example: Play C2, E2, G2, D3, and G3 on a MIDI

keyboard, and the five resonators will assume those pitches; the

resonators will change to different notes as you play different keys.

Furthermore, the MIDI notes ÒgateÓ the resonators on and off. So,

when a resonator receives a MIDI note-off message, it will decay to

zero according to the decay time (set on the next page) even if thereÕs

still a signal present at the QuadraVerb GT input.

Resonator Decay (config 7 only)

The display says:

RESONATOR DECAY:

This sets a global decay time for all five resonators. The higher the number, the longer the decay.

Resonator Tune (config 7 only)

9 0

The display says:

RESONATOR 1 TUNE

+ 0 0 SEMI TONE

The PAGE buttons switch between the 5 resonators, as shown by the upper line. The VALUE buttons tune the resonators in semitones over a five-octave range, from -24 semitones to +36 semitones.

If MIDI gated mode is selected, standard chromatic pitch tracking will occur only if the tuning for all resonators is set to 00. However, if you offset the resonator tunings and play the same MIDI key repeatedly, youÕll hear an arpeggiator effect.

4.14 EDITING MIX PARAMETERS (config 1)

Configuration 1 offers separate mix levels for the Preamp or EQ, Pitch,

Delay, and Reverb modules, tremolo or panning, and master/direct mix levels.

Direct Signal Level

The display says:

This sets the level for the direct signal path. Use this and the Master Effects level control to balance the levels of the straight and processed signal paths.

Master Effects Level

The display says:

DIRECT LEVEL:

5 0

This sets the master volume for all the effects module outputs. Use this and the Direct signal control to balance the levels of the straight and processed signal paths.

Preamp Signal

The display says:

This selects whether the preamp output will be routed through the EQ before being sent to the Output Level Control.

MASTER EFFECTS LEVEL: 0 0

PREAMP SIGNAL: P RE-EQ

Preamp Level (appears only with Pre-EQ preamp signal)

The display says:

PREAMP LEVEL:

9 9

This mixes the preamp output signal into the master effects buss. Note that this level is dependent on the Preamp Output level found in the Preamp module.

EQ Level (appears only with Post-EQ preamp signals)

The display says:

EQ OUTPUT LEVEL:

9 9

This mixes the EQÕed signal into the master effects output bus.

Pitch Output Level

The display says:

This mixes the pitch-modulated signal into the master effects output bus.

Delay Output Level

The display says:

PITCH LEVEL:

9 9

DELAY LEVEL:

9 9

This mixes the delayed signal into the master effects output bus.

Reverb Output Level

The display says:

This mixes the reverberated signal into the master effects output bus.

Modulation

The display says:

This allows you to choose between tremolo or panning.

REVERB LEVEL:

9 9

MODULATION: T REMOLO

Modulation Depth

The display says:

This determines the depth of either the panning or tremolo, depending upon which you have selected.

Modulation Speed

The display says:

This determines the speed of either the panning or tremolo, depending

MODULATION DEPTH

0 0

MODULATION SPEED

0 0

upon which you have selected.

4.15 EDITING MIX PARAMETERS (config 2)

Configuration 2 offers separate mix levels for the Lezlie, Delay, and Reverb modules, as well as master level (no preamp signal output is needed in this configuration).

Direct Signal Level

The display says:

DIRECT LEVEL:

5 0

This sets the level for the direct signal path. Use this and the Master Effects level control to balance the levels of the straight and processed signal paths.

Master Effects Level

The display says:

This sets the master volume for all the effects module outputs.

Lezlie Output Level

The display says:

MASTER EFFECTS LEVEL: 0 0

LEZLIE LEVEL:

9 9

This mixes the Lezlie output signal into the master effects output bus.

Delay Output Level

The display says:

This mixes the delayed signal into the master effects output bus.

Reverb Output Level

The display says:

DELAY LEVEL:

9 9

REVERB LEVEL:

9 9

This mixes the reverberated signal into the master effects output bus.

4.16 EDITING MIX PARAMETERS (config 3)

Configuration 3 offers separate mix levels for the EQ and Delay, as well as master level control.

Direct Signal Level

The display says:

DIRECT LEVEL:

5 0

This sets the level for the direct signal path. Use this and the Master Effects level control to balance the levels of the straight and processed signal paths.

Master Effects Level

The display says:

This sets the master volume for all the effects module outputs.

EQ Output Level

The display says:

This mixes the EQÕed signal into the master effects output bus.

MASTER EFFECTS LEVEL: 0 0

EQ OUTPUT LEVEL:

9 9

Delay Output Level

The display says:

This mixes the delayed signal into the master effects output bus.

DELAY LEVEL:

9 9

4.17 EDITING MIX PARAMETERS (config 4)

Configuration 4 offers separate mix levels for the EQ, Pitch, and Delay modules, along with master/direct mix levels.

Direct Signal Level

The display says:

DIRECT LEVEL:

5 0

This sets the level for the direct signal path. Use this and the Master Effects level control to balance the levels of the straight and processed signal paths.

Master Effects Level

The display says:

This sets the master volume for all the effects module outputs. Use this and the Direct signal control to balance the levels of the straight and processed signal paths.

Preamp Signal

The display says:

MASTER EFFECTS LEVEL: 0 0

PREAMP SIGNAL: P RE-EQ

This selects whether the preamp output will be routed through the EQ before being sent to the Output Level Control.

Preamp Level (appears only with Pre-EQ preamp signal)

The display says:

PREAMP LEVEL:

9 9

This mixes the preamp output signal into the master effects buss. Note that this level is dependent on the Preamp Output level found in the Preamp module.

EQ Output Level (appears only with Post-EQ preamp signals)

The display says:

EQ OUTPUT LEVEL:

9 9

This mixes the EQÕed signal into the master effects output bus.

Pitch Output Level (appears only with Post-EQ direct signals)

The display says:

PITCH LEVEL:

9 9

This mixes the pitch-modulated signal into the master effects output bus.

Delay Output Level

The display says:

This mixes the delayed signal into the master effects output bus.

Modulation

The display says:

This allows you to choose between tremolo or panning.

DELAY LEVEL:

9 9

MODULATION: T REMOLO

Modulation Depth

The display says:

This determines the depth of either the panning or tremolo, depending upon which you have selected.

Modulation Speed

The display says:

This determines the speed of either the panning or tremolo, depending upon which you have selected.

MODULATION DEPTH:

0 0

MODULATION SPEED:

0 0

4.18 EDITING MIX PARAMETERS (config 5)

Configuration 5 offers a mix control for the Reverb module, along with master/direct mix levels.

Direct Signal Level (appears only with Pre-EQ direct signals)

The display says:

DIRECT LEVEL:

5 0

This sets the level for the direct signal path. Use this and the Master Effects level control to balance the levels of the straight and processed signal paths.

Master Effects Level

The display says:

This sets the master volume for all the effects module outputs. Use this and the Direct signal control to balance the levels of the straight and processed signal paths.

Preamp Signal

The display says:

This selects whether the preamp output will be routed through the EQ

MASTER EFFECTS LEVEL: 0 0

PREAMP SIGNAL: P RE-EQ

before being sent to the Output Level Control.

Preamp Level (appears only with Pre-EQ preamp signal)

The display says:

PREAMP LEVEL:

9 9

This mixes the preamp output signal into the master effects buss. Note that this level is dependent on the Preamp Output level found in the Preamp module.

EQ Output Level (appears only with Post-EQ preamp signals)

The display says:

This mixes the EQÕed signal into the master effects output bus.

Reverb Output Level

The display says:

This mixes the reverberated signal into the master effects output bus.

EQ OUTPUT LEVEL:

9 9

REVERB LEVEL:

9 9

4.19 EDITING MIX PARAMETERS (config 6)

Configuration 6 offers separate mix levels for the Ring Modulator, Delay, and Reverb modules, along with master/direct mix levels.

Direct Signal Level

The display says:

DIRECT LEVEL:

5 0

This sets the level for the direct signal path. Use this and the Master Effects level control to balance the levels of the straight and processed signal paths.

Master Effects Level

The display says:

This sets the master volume for all the effects module outputs. Use this and the Direct signal control to balance the levels of the straight and processed signal paths.

Preamp Level

The display says:

This mixes the preamp output signal into the master effects buss. Note that this level is dependent on the Preamp Output level found in the Preamp module.

MASTER EFFECTS LEVEL: 0 0

PREAMP LEVEL:

9 9

Ring Modulator Output Level

The display says:

RING MOD. LEVEL:

This mixes the ring modulated signal into the master effects output bus.

Delay Output Level

The display says:

DELAY LEVEL:

This mixes the delayed signal into the master effects output bus.

+99

9 9

Reverb Output Level

The display says:

This mixes the reverberated signal into the master effects output bus.

REVERB LEVEL:

9 9

4.20 EDITING MIX PARAMETERS (config 7)

Configuration 7 offers separate mix levels for the Resonator, Delay, and Reverb modules, along with master/direct mix levels.

Direct Signal Level

The display says:

DIRECT LEVEL:

5 0

This sets the level for the direct signal path. Use this and the Master Effects level control to balance the levels of the straight and processed signal paths.

Master Effects Level

The display says:

This sets the master volume for all the effects module outputs. Use this and the Direct signal control to balance the levels of the straight and processed signal paths.

Preamp Signal Level

The display says:

MASTER EFFECTS LEVEL: 0 0

PREAMP LEVEL:

5 0

This mixes the preamp output signal into the master effects buss. Note that this level is dependent on the Preamp Output level found in the

Preamp module.

Resonator Output Level

The display says:

This mixes the resonator signal into the master effects output bus.

Delay Output Level

The display says:

RESONATOR LEVEL:

9 9

DELAY LEVEL:

9 9

This mixes the delayed signal into the master effects output bus.

Reverb Output Level

The display says:

This mixes the reverberated signal into the master effects output bus.

REVERB LEVEL:

9 9

CHAPTER 5 Ð SAMPLING

The QuadraVerb GT can record an audio sample of up to 1.55 seconds. During playback, the sample start and length times can be altered for special effects or to trim the playback of the sample to the actual start point of the sound. The sample can also be played back in its entirety (one shot) or continuously repeated (looping). Several external sources can trigger the sample, including an incoming audio source, MIDI note on, note off, and note number/pitch message, which allows the sample to be played back from a MIDI keyboard.

CAUTION: A sample or edited version of a sample cannot be saved either internally or via MIDI and will remain in memory only as long as the power remains on. If you sample something you do not want to lose, record it on some other medium, such as a cassette or DAT recorder, before shutting off power to the QuadraVerb GT. Any time that you change configurations or programs you will lose your sample.

5.1 SELECTING THE SAMPLING CONFIGURATION

Configuration 8 is used for sampling. All sampling parameters are accessed through the DELAY module (although the EQ button is used for triggering and stopping sample playback).

To select this configuration:

1. Press the CONFIG button.

2. Press the UP VALUE button until the display reads:

CONFIGURATION: SAMPLING

5.2 RECORDING A SAMPLE

There are two ways to record a sample. In the first (the easiest way to get a good sample), the QuadraVerb GT waits for the incoming audio to trigger recording. With the second method, pressing the front panel

BYPASS button initiates recording.

Recording By Audio Trigger

1. Press the DELAY button. The display says:

SAMPLE PLAYBACK: L OOPING

(The lower line may also show ONE SHOT or AUDIO TRIGGER.) This page is primarily for playback and can be bypassed for now.

2. Press the PAGE UP button three times. The display says:

3. Use the VALUE buttons to select Audio Trigger On mode (if it is

turned off).

4. Press the BYPASS button. The display says:

AUDIO TRIGGER

SAMPLING: O N

WAITING FOR

AUDIO THRESHOLD

5. Send a signal to the QuadraVerb GT. When the first LED (-18dB)

lights, the input signal has passed the audio threshold and recording

has begun. For the best signal quality, vary the input level control so

that the -6dB LED lights. The signal, and sample, will be distorted if

the red "Clip" LED lights.

Recording from the Front Panel

1. Press the DELAY button. The display will read:

SAMPLE PLAYBACK: L OOPING

(The lower line may also show ONE SHOT or AUDIO TRIGGER.)

This page is primarily for playback and can be bypassed for now.

2. Press the PAGE UP button until the display says:

AUDIO TRIGGER

SAMPLING: O N

3. Use the VALUE buttons to select the Audio Trigger Off mode.

4. Press the BYPASS button to start sampling. The display will read:

SAMPLING........

For the best signal quality, vary the input level control so that the -

6dB LED lights. The signal will be distorted if the red "Clip" LED

lights.

Playing Back a Sample

There are three ways to play back a recorded sample: from the front panel, from an audio trigger, or through MIDI. Playback from the front panel (manual playback) would normally be used when you want to manually trigger a recorded sample. Playback from an audio trigger is useful for replacing one audio source with a recorded sample, as in the case of replacing a snare drum on a tape track with a better recorded sample. Playback through MIDI enables a recorded sample to be played, and transposed, from a MIDI keyboard.

NOTE: Make sure that the Sample Playback Level in the Mix section (section 7.2) is set to an audible level (i.e., greater than zero).

Front Panel Playback

1. Press the DELAY button. The lower display line shows either ONE

SHOT or LOOPING:

ONE SHOT means that once a sample is initiated, it will play until

the end of the sample and then stop. If you want to play back the

sample continuously until you tell it to stop, select LOOPING.

2. To begin playback, press the EQ button. The sample will play to the

end and then automatically stop. To play back again, press EQ again.

If you selected LOOPING in step 1, push the EQ button to stop sample

playback.

3. Use the OUTPUT control to increase or decrease the sample volume.

SAMPLE PLAYBACK: O NE SHOT

Audio Trigger Playback

1. Press the DELAY button. The display says:

2. Press the VALUE UP button until the display reads:

Any incoming audio signal that passes the threshold (makes the -

18dB LED light) will cause the sample to play.

Notes

¥ The recorded sample can still be manually played back by pressing the

EQ button.

SAMPLE PLAYBACK: O NE SHOT

SAMPLE PLAYBACK: A UDIO TRIGGER

Alesis QUADRAVERBGT User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual