Lexicon LXP-5 Owner's Manual

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Owner's Manual

LXP-5

Effects

Processing

Module

Owner's Manual

LXP-5

Effects

Processing

Module

Unpacking and Inspection

After unpacking the LXP-5, save all packing materials in case you ever need to ship the unit. Thoroughly inspect the LXP-5 and packing materials for signs of damage. Report any shipment damage to the carrier at once; report equipment malfunction to your dealer.

Notice

This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer's instructions, may cause interference to radio and television reception. It has been type tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC Rules, which are designated to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment OFF and ON, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient the receiving antenna

Relocate the computer with respect to the receiver Move the computer away from the receiver

Plug the computer into a different outlet so that the computer and receiver are on different branch circuits.

If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions. The user may find the following booklet prepared by the Federal Communications Commission helpful:

"How to identify and Resolve Radio/TV Interference Problems."

This booklet is available from the U.S. Government Printing Office, Washington, DC 20402, Stock No. 004-000-00345-4.

	Lexicon Inc.
	3 Oak Park
Copyright 1989, 1995	Bedford, MA 01730USA
Copyright 1989, 1995	Telephone 781-280-0300
All Rights Reserved.	Fax 781-280-0490
Lexicon Part #070-07332 Rev 1

Table of Contents

Introduction
1. Installing the LXP-5
Unpacking ..........................................................................	1-1
Mounting ............................................................................	1-1
Power ................................................................................	1-1
Front Panel Controls ..........................................................	1-2
Rear Panel Connectors .....................................................	1-3
Audio Connections ............................................................	1-4
2. Front Panel Operation
Setting Audio Levels ..........................................................	2-1
LED Signals .......................................................................	2-3
Selecting Preset Programs ................................................	2-4
User Memory .....................................................................	2-7
Creating Your Own Sounds .............................................	2-11
Storing and Recalling sounds ..........................................	2-19
Footswitch Operation .......................................................	2-22
3.MIDI Operation
Accessing Programs ..........................................................	3-1
Patches and Dynamic MIDI ..............................................	3-4
Creating Patches Using MIDI SysEx Data ......................	3-11
Assigning Switches as Control Sources ..........................	3-12
4. MIDI Implementation Data
Data/Event Requests .........................................................	4-1
Transmit/Receive Data ......................................................	4-2
Parameter Definitions ........................................................	4-6
Microcode Parameters ......................................................	4-9
Implementation Chart ......................................................	4-14
5. Specifications

User Program Log Sheet

Introduction

Congratulations on your purchase of the LXP-5 Effects Processing Module! You are about to experience superb sound quality, a full range of pitch shifting, delay and reverb effects, fast intuitive editing of preset sounds, and an industry-leading MIDI implementation.

The LXP-5 offers a rich and distinctive palette of special effects, including 128 programs to get you started — 64 preset effects programs and an additional 64 programs stored in RAM user memory locations. Each program has up to five variable parameters that you can adjust for subtle or dramatic changes in the program’s sound, and you can store as many as 128 customized programs in user memory. All of the LXP-5 functions are accessible from the front panel, or via MIDI, providing truly world-class flexibility and control. From pitch shifting to stereo delays and flanging, the LXP-5 delivers superior performance. Whether you are a producer, engineer, or musician—whether you work on stage or in the studio—the LXP-5 will quickly become an indispensible part of your sound.

We’re confident you’ll find that the LXP-5’s unique combination of state-of- the-art sound and extraordinary versatility is exactly what you’re looking for. A Quick Reference card provides the basics of operation in a compact format to get you up and running as quickly as possible — but to make sure you don’t miss out on anything, we’d like you to read this manual. It provides a thorough explanation of both front panel and MIDI operation, program descriptions, and complete MIDI Implementation data — all the information you need to access the full power of the LXP-5.

Installing the LXP-5

1. Installing the LXP-5

Unpacking

1.Quick Reference card

2.Owner's Manual

3.Power pack (USA Part # 470-07345)

4.Warranty card (USA only)

Mounting

The LXP-5 measures 8.5"W x 1.7"H x 9.5"d (215.9 x 43.2 x 241.3 mm). The optional rack mounting kit (A-LXP-R) handles one or two units in a single rack space. Whatever mounting method you use, make sure that the LXP- 5 is securely screwed into the rack adapter – "friction fit" or double-stick tape installations may allow units to loosen during transportation, resulting in damage.

The maximum ambient operating temperature is 35° C (95° F). Provide adequate ventilation if the LXP-5 is mounted in a closed rack with heatproducing equipment such as synthesizer modules, effects units, or power amplifiers. Avoid mounting the LXP-5 directly above power amplifiers.

Power

Connect the LXP-5 power pack to an appropriate AC wall socket, and the cable end to the LXP-5 power connector. The LXP-5 must be used only with the supplied power pack. Voltage requirements are printed on the power pack. The LXP-5 has no power switch – it can be left on all the time. To keep the power plug from working loose from the rear of the unit during transport, you may wish to apply a small amount of silicone sealer to the plug after inserting it.

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LXP-5 Owner's Manual

LXP-5 Front Panel Controls

Input

Sets the audio input level.

Mix

Controls the ratio of dry (source) to wet (effect) signal present at the LXP-5 outputs. (Turn the control all the way to the left for 100% dry/ 0% wet.)

Output

Controls the signal level sent to the LXP-5 outputs.

Learn

This button is used to store and edit programs, to learn patches and, with an external MIDI device, to select MIDI channel.

Learn LED

Confirms that power is on, and blinks in red or green at different rates to indicate LXP-5 status.

exicon	LXP-5

INPUT	MIX	OUTPUT	PITCH	PRESET	USER
INPUT	MIX	OUTPUT	PITCH		SELECT	LEARN
			DELAY		1
			CHORUS		2
			MULTI		3
				A	4
			EDIT	B	5
				C	6
					7

BYPASS

Level Indicators

The left LED indicates signal present; the right flashes red when the signal is -3dB from peak overload.

Function and Select

Used for selection of factory presets, User memories, Bypass and three edit modes.

Adjust

Used to adjust program parameter(s), or to adjust the selected parameter in Edit Mode.

1-2

Installing the LXP-5

LXP-5 Rear Panel Connections

MIDI IN

Receives MIDI information from other MIDI equipment such as master keyboard controllers, MIDI foot controllers, sequencers and synthesizers.

Footswitch

Connector for toggle (Push on/push off) or momentary contact footswitch.

Outputs (L and R)

Single-ended (unbalanced) stereo outputs provide +4dBu nominal output level.

Dynamic MIDI®	FOOTSWITCH	POWER		OUTPUTS		INPUTS
	MIDI	9V AC	L	R	L	R
		1.5A	L	R	L	R
		1.5A
IN	OUT - THRU	LEXICON LXP-5	THIS EQUIPMENT COMPLIES WITH THE REQUIREMENTS IN
	OUT - THRU	ASSEMBLED IN HONG KONG	PART 15 OF FCC RULES FOR A CLASS A COMPUTING DEVICE
		ASSEMBLED IN HONG KONG	PART 15 OF FCC RULES FOR A CLASS A COMPUTING DEVICE


MIDI THRU (OUT)	Power	Inputs (L and R)
With the recessed slide	Accepts power from	Single-ended (unbal-
switch set for MIDI	the supplied power	anced) inputs accept
THRU, any MIDI data	pack.	levels from -25 to
received is sent without		+20dBu. Input imped-
change. The recessed		ance is 50 kilohms in
slide switch can also be		stereo, 25 kilohms in
set for MIDI OUT.		mono.

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LXP-5 Owner's Manual

Audio Connections

This section outlines several connection possibilities for the LXP-5. Because each sound system is unique, we recommend experimentation to arrive at the best configuration for your system. Always check connections for proper impedance, polarity, and levels.

Audio connections to the LXP-5 are unbalanced, and should be made with high quality shielded cables with 1/4" tip-sleeve phone jacks at the LXP-5 end. The connectors must be wired as shown below:

Sleeve - Shield/Ground

Tip - High

If only 1/4" tip-ring-sleeve phone jacks are available, they must be wired as shown:

Sleeve - Shield/Ground

Tip - High

Ring - Connect to Sleeve

Mono or stereo?

The LXP-5 produces wonderful stereo effects from either mono or stereo signal sources. For mono sources, use either of the two input connectors; the dry signal appears (along with the stereo effects) in mono at both output connectors. For instruments and sources with stereo outputs, use both inputs. We recommend using both LXP-5 outputs whenever possible but, if mono output is required, you can use just one of the two output connectors. When only one output is used, the left and right signals are summed internally .

Some of the examples on the following pages use stereo instruments and amplification systems, others use mono. Feel free to adapt the examples to your specific requirements.

1-4

Installing the LXP-5

Channel Input or Effects Return (R)

Channel Input or

Effects Return (L)

Effects

Send

Input
(L or R)	L Output R Output

exicon

LXP-5

INPUT	MIX	OUTPUT	PITCH	PRESET	USER	LEARN
INPUT	MIX	OUTPUT	PITCH		SELECT	LEARN
			DELAY		1
			CHORUS		2
			MULTI		3
				A	4
			EDIT	B	5
				C	6
					7
				BYPASS	8

Connection to a mixing console's effects sends

If you will be using an LXP-5 as your primary effects unit, and your system includes a console with one or more auxiliary (effects) sends, connect the LXP-5 as shown above. In most applications, it is preferable to connect the LXP-5 outputs to two of the console's input channel strips, panned full left and right, rather than the effects returns. This allows the greatest flexibility in routing and equalization.

In this configuration the console controls are used to set the amount of effect heard— the LXP-5 front panel MIX control should be set fully clockwise for 100% wet.

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LXP-5 Owner's Manual
		Channel Input
		(pan right)
		Channel Input
		(pan left)
			LXP-5		LXP-5
		L Output			R Output
exicon					LXP-5
INPUT	MIX	OUTPUT	PRESET	USER
INPUT	MIX	OUTPUT	PITCH	SELECT	LEARN
			DELAY	1
			CHORUS	2
			MULTI	3
			A	4
			EDIT B	5
			C	6
				7
			BYPASS	8
In			In
Synth			Synth
L Output			R Output

Connection between instrument and console

In some applications (such as when an LXP-5 is used for a single instrument) it may be desirable to patch the LXP-5 between the instrument and console. This makes it possible to keep the LXP-5 up on stage with other MIDI gear, rather than in the console effects rack, making MIDI control much easier.

In this configuration, the LXP-5 front panel MIX control is used to set the balance between wet and dry sound.

1-6

Installing the LXP-5

Guitar

Output

exicon

LXP-5

INPUT	MIX	PRESET	USER
INPUT	MIX	OUTPUT PITCH
		DELAY	1
		CHORUS	2
LXP-5 Input		MULTI	3
LXP-5 Input			7
		A	4
		EDIT B	5
		C	6
(L or R)		BYPASS	8
(L or R)	LXP-5
	LXP-5
	L Output

SELECT

LEARN

LXP-5

R Output

Amp

L Input

R Input

Connection between instrument and amplifier

For a very spacious guitar sound, connect the LXP-5 between a guitar and two amp and speaker stacks. The only problem with this setup is that if you use overdrive distortion created by the amplifier, changing settings on the LXP-5 also affects the quantity and quality of your distortion. If you use a separate distortion box, you can get around this problem by connecting it before the LXP-5. If you prefer amplifier-generated distortion, try the setup shown on the next page.

1-7

LXP-5 Owner's Manual

WARNING! Never connect speaker outputs from a guitar amp to the LXP-5. Doing so can cause serious damage which is not covered by the LXP-5 warranty. On some guitar amplifiers it is very easy to accidentally use a speaker output instead of a direct or effects output. BE CAREFUL!

Amp or

Guitar Preamp Output Input

Direct or

Preamp output

LXP-5 Input (L or R)

exicon			LXP-5
INPUT MIX	PRESET	USER
INPUT MIX	OUTPUT PITCH	SELECT	LEARN
	DELAY	1
	CHORUS	2
	MULTI	3
	A	4
	EDIT B	5
	C	6
		7
	BYPASS	8
	LXP-5	LXP-5
	L Output	R Output
Amp		Amp
L Input		R Input

L and R Speaker Outputs from Power Amp

Connection between instrument preamp and power amplifier(s)

If you use overdrive distortion, it's usually better to create the overdrive before sending the signal to the LXP-5 to ensure that the effects don't change the quantity and quality of your distortion. In this setup, you need a guitar preamplifier or a guitar amp with a direct output. Feed this signal to either of the LXP-5 inputs, and then on to a stereo power amp or a pair of guitar amps. (A few guitar amplifiers become unhappy if they are operated without speakers connected. Consult the amp manufacturer for details.)

You can use the effects send and return connectors on a mono guitar amp to obtain similar results. Adjust the LXP-5 output level so that the amp produces the same output with the LXP-5 as it does without it.

1-8

Installing the LXP-5

Console

Inputs

Console

Inputs

LXP-5 Outputs			LXP-5 Outputs
(L and R)			(L and R)
exicon	LXP-5	exicon	LXP-5

INPUT			PRESET	USER		INPUT	MIX		PRESET	USER
INPUT	MIX	OUTPUT	PITCH	SELECT	LEARN	INPUT	MIX	OUTPUT	PITCH	SELECT	LEARN
			DELAY	1					DELAY	1
			CHORUS	2					CHORUS	2
			MULTI	3					MULTI	3
			A	4					A	4

EDIT B	5	EDIT B	5
C	6	C	6
	7		7
BYPASS	8	BYPASS	8
LXP-5 Inputs		LXP-5 L Input
(L and R)
	Drum machine's	Drum machine's individual
	stereo outputs	output for snare drum

Connection between drum machine and console

Using two LXP-5 units between your drum machine and console can make your drum machine sound much more exciting, since it allows you to process the all-important snare drum separately from the rest of the mix. Make sure you remove the snare from the drum machine's main stereo mix.

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LXP-5 Owner's Manual

1-10

Front Panel Operation

2. Front Panel Operation

Setting audio levels

The wide range of adjustment available with the LXP-5 INPUT and OUTPUT LEVEL controls allow it to be used with virtually any kind of equipment found in the studio or on the road.

To set audio levels:

1.Turn the LXP-5 INPUT and OUTPUT LEVEL controls all the way down (fully counterclockwise).

2.Set the instrument output, preamp output, or effects send that feeds the LXP-5 input(s) to a nominal level. With an instrument, this should be your loudest normal playing level; with a preamp output or console, adjust the output(s) or effects send(s) to produce the highest level possible with the least amount of noise. If the output you are using doesn't have a level control, don't worry about it!

3.While sending audio to the LXP-5, gradually turn up the INPUT LEVEL control until the green SIGNAL PRESENT LED lights. Continue to advance INPUT LEVEL until the red PEAK LED just flashes on the loudest peaks. If it flashes continously, reduce INPUT LEVEL slightly.This ensures the best possible signal-to-noise ratio and dynamic range.

SIGNAL PRESENT LED should be lit

exicon

PEAK LED flashes on peaks; INPUT LEVEL should be set to the level where the PEAK LED flashes briefly on the loudest peaks only

INPUT

MIX

Note: If the PEAK LED flashes with no input present (i.e., during reverb delay line feedback, it indicates processor overload is occurring.

2-1

LXP-5 Owner's Manual

4.If the LXP-5 inputs are connected to a console effects send, and the outputs are connected to console channel strip inputs, set the console's input level trim and fader to a setting typically used for line level inputs. Then set the MIX control fully clockwise (100% effect) and gradually turn up the LXP-5 OUTPUT LEVEL control until the right amount of audio is present at the console.

MIX setting to use when

INPUT	MIX	OUTPUT	the LXP-5 is patched to
			the LXP-5 is patched to
			console effects send(s)

5.If you are using an instrument amplifier or preamplifier, start with the LXP-5 MIX control straight up (50% effect). Gradually increase the OUTPUT LEVEL control until the audio level heard from the amplifier is approximately the same as when the LXP-5 is not connected.

The best setting for MIX depends on which program you are using, and to a great extent, your personal taste; feel free to experiment.

INPUT	MIX	OUTPUT	When using an instrument
			When using an instrument
			amplifier or preamplifier,
			the ideal MIX setting is
			generally somewhere in
			this range

2-2

Front Panel Operation

LED signals

The front panel LEARN indicator is a bicolor (red/green) LED that performs several functions:

The LEARN LED will blink at a 6 Hz rate for approximately 2 seconds — in green to indicate succesful register storage, red to indicate failure to store to a register.

MIDI Data Present

The LEARN LED will flicker (in whatever its current color) to indicate LXP- 5 recognition of incoming MIDI messages. System Common messages, non-LXP-5 SysEx messages and any message on channels other than the selected channel will not activate the LED.

Parameter Editing Status

When not receiving MIDI, or indicating storage success, the LED will tell you two things about the parameter editing status of the sound you are running:

1.Has the selected parameter been changed from the stored value?

If the selected parameter matches the stored value, the LED will be green. Otherwise it will be red.

2.Do the knobs correctly indicate the sound that is running?

If the knobs are accurate the LED will be steady. If the knobs are not accurate (for example, after loading a program or changing the selected parameter via MIDI), the LED will blink.


	GREEN	RED

LED Steady	Parameter Unchanged	Parameter Changed
	Knobs Accurate	Knobs Accurate

LED Blinks	Parameter Unchanged	Parameter Changed
	Knobs Inaccurate	Knobs Inaccurate

2-3

LXP-5 Owner's Manual

Presets and User Programs

Selecting LXP-5 preset programs

Any one of 64 preset effects programs can be selected by turning the FUNCTION and SELECT knobs on the front panel. To select a preset, first turn FUNCTION to one of the four available preset types: PITCH, DELAY, CHORUS or MULTI(-effect). Then, turn SELECT to one of the 16 presets within the chosen type.

Use FUNCTION to select a	Use SELECT to choose
preset type.	a specific preset.

	PRESET	USER
	PITCH
	DELAY	1
	CHORUS	2
	MULTI	3
	A	4
	A	5
	EDIT B	5
	C	6
	C	7
		7

BYPASS	8

SELECT

Once a preset has been chosen, the sound can be modified with the ADJUST knob. Program parameters can be altered in Edit mode, described later in this chapter.

Use ADJUST to change the sound of the preset.

LXP-5

LEARN

2-4

				Front Panel Operation
LXP-5 Presets

			PITCH

	SELECT		PRESET	ADJUST
	SELECT			ADJUST
	Position	#	Name	Parameters
	MIN	1	Fourth Down	Pitch Interval
	2	2	Fifth Up	Pitch Interval
	3	3	Octave Down	Pitch Interval
	4	4	Two Octaves Down	LFO Rate
	5	5	Octave Up	LFO Rate
	6	6	Tunnel Up	Dly 2,3-crs,Rvb Bal,Pitch Adj
	7	7	Tunnel Down	Dly 2,3-crs,Rvb Bal,Pitch Adj
	8	8	Glissando Up	Dly 2,3-crs,Decay Time,Pitch Intrvl
	9	9	Glissando Down	Dly 2,3-crs,Decay Time,Pitch Intrvl
	10	10	Diminished	Dly 2,3-crs,Decay Time
	11	11	Suspended	Dly 2,3-crs,Decay Time
	12	12	Low Octave	Pitch Interval
	13	13	Mid Octave	Pitch Interval
	14	14	High Octave	Pitch Interval
	15	15	Semitune	Pitch Adjust
	MAX	16	Fine Tune	Pitch Adjust

			DELAY

	SELECT		PRESET	ADJUST
	SELECT			ADJUST
	Position	#	Name	Parameters
	MIN	17	Echo Delay	Dly 1,2-crs,Rvb Bal
	2	18	Stereo Delay	Dly 1,2-crs,Rvb Bal,Fbk 1
	3	19	Slap Echo	Decay Time,Dly 2-crs,Fbk 1
	4	20	Mid Slap	Decay Time,Dly 1,2-crs,Fbk 1
	5	21	Stereo Slap	Decay Time,Dly 1,2-crs
	6	22	Diffuse Echo	Decay Time,Dly 1,2-crs,Fbk 1
	7	23	Image Delay	Decay Time,Dly 1,2-crs,Fbk 1
	8	24	Bounce Delay	Dly 1,2-crs,Fbk 1
	9	25	Bounce Loop	Dly 1,2-crs,Fbk 1
	10	26	Ambient Loop	Dly 1-crs,Fbk 1
	11	27	Echo Loop	Dly 1-crs,Fbk 1
	12	28	Filter Delay	Dly 1-crs,Fbk 1
	13	29	Robot 1	Dly 1-fin,Dly 2-crs,Fbk 1
	14	30	Robot 2	Dly 1-fin,Dly 2-crs,Fbk 1
	15	31	Short Delay	Dly 1-crs
	MAX	32	Long Delay	Dly 1-crs

				2-5

LXP-5 Owner's Manual

CHORUS

SELECT		PRESET	ADJUST
SELECT			ADJUST
Position	#	Name	Parameters
MIN	33	Chorus	Pitch Adj,Dly 3-crs
2	34	Ambient Image	Dly 3-crs,Decay Time,Rvb Time
3	35	Comb Ambience	Dly 2,3-crs,LFO Rate
4	36	Ambient Detune	Dly 2,3-crs,LFO Rate
5	37	Dry Detune	Dly 2,3-crs,LFO Rate
6	38	Slap Detune	Dly 1,3-crs,LFO Rate
7	39	Resonant Sweep	Dly 1,3-crs,LFO Rate
8	40	Diffuse Sweep	Dly 1,3-crs,LFO Rate
9	41	Slap Sweep	Dly 1,3-crs,LFO Rate
10	42	Echo Detune	Dly 1,3-crs,LFO Rate
11	43	Step Detune	Dly 3-crs
12	44	Roto Motion	LFO Rate,Patch 3 (LFO to Dly 2-fin)
13	45	Roto Slap	LFO Rate,Patch 3 (LFO to Dly 2-fin)
14	46	Slow Res. Sweep	Rvb Bal,Patch 3 (LFO to Dly 2-fin)
15	47	Slap Flange	Rvb Bal,Patch 3 (LFO to Dly 2-fin)
MAX	48	Diffuse Flange	LFO Rate,Patch 3 (LFO to Dly 2-fin)

		MULTI

SELECT		PRESET	ADJUST
SELECT			ADJUST
Position	#	Name	Parameters
MIN	49	Strange Room	Dly 2-crs,Pitch Adj,Fbk 2
2	50	Down Room	Pitch Adj,Fbk 2
3	51	Ambient Slap	Dly 2-crs,Decay Time
4	52	Slow Rise	Dly 2-crs,Fbk 2,Hicut
5	53	Slow Fall	Dly 2-crs,Dly 3-fin,Fbk 2,Locut
6	54	Octave Room	Fbk 2,Hicut,Decay Time
7	55	Zoom	Fbk 2,Pitch Interval
8	56	Bounce Fourth	Dly 2-crs,Fbk 1,Bass Mult,Dcy Time
9	57	Slap Room	Dly 2-crs,Fbk 1,Bass Mult,Dcy Time
10	58	Echo Room	Dly 2-crs,Fbk1,Rvb Bal,Decay Time
11	59	Dark Closet	Treble Decay,Hicut,Decay Time
12	60	Small Bright	Decay Time
13	61	Medium Bright	Decay Time
14	62	Medium Dark	Decay Time
15	63	Large Bright	Dly 2-crs,Decay Time
MAX	64	Huge Room	Dly 2-crs,Decay Time

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