Zoom GFX-8 User Manual

Operation Manual

Safety and Usage Precautions

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2

Introduction

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Naming of Parts

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Top Panel

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Rear Panel

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Terms Used in This Manual

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5

Getting Connected

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Connection Example (1)

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Connection Example (2)

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Connection Example (3)

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Preparations

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Power Up

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7

Setting up the Amp Simulator

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7

Quick Guide (Trying Out the Unit)

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8

Listening to Patches (Play Mode Operation)

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Panel Indication in Play Mode

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Selecting a Patch

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Using the Easy Edit Function

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11

Using the Bypass (Mute)/Tuner Function

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Adjusting the Reference Pitch of the Tuner

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13

Switching Modules On and Off During Play (Manual Mode)

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13

Changing the Sound of a Patch (Edit Mode)

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14

Basic Edit Mode Steps

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14

Edit Mode Shortcut (1)

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Edit Mode Shortcut (2)

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Creating Custom Distortion

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Storing Custom Module Settings

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18

Storing and Copying Patches (Store Mode Operation)

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18

Effects and Parameters

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DRIVE Module

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19

ZNR/EQ (Zoom Noise Reduction/Equalizer) Module

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MOD (Modulation) Module

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DLY/REV (Delay/Reverb) module

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SFX Effects

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TOTAL Module

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29

Using RTM

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30

Using the CONTROL Switch

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31

Using the Jam Play Feature

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32

Using the Sampler

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34

MIDI Usage Examples

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Basic MIDI Send/Receive Settings

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35

Switching GFX-8 Patches From an External Unit

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35

Controlling External Devices in Conjunction With GFX-8

Patch Switching

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37

Remote Control Using GFX-8

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38

Bulk Dump

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Bulk Load

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40

Supplied Software

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40

Other Functions

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41

All Initialize/Factory Recall

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41

Trying Out the Factory Default Patches

(Self Introduction Function)

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41

Adjusting the Expression Pedal

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41

Disabling the Bypass/Mute Function

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41

Troubleshooting

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42

GFX-8 Specifications

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42

MIDI Implimentation Chart

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43

CONTENTS

Safety and Usage Precautions

USAGE AND SAFETY PRECAUTIONS

In this manual, symbols are used to highlight warnings and

cautions for you to read so that accidents can be prevented. The

meanings of these symbols are as follows:

Please observe the following safety tips and precautions to ensure

hazard-free use of the GFX-8.

• Power requirements

• The GFX-8 is powered by the supplied AC adapter .

• To prevent malfunction and safety hazards, Do not use any

other kind of AC adapter.

• When using the GFX-8 in an area with a different line

voltage, please consult your local ZOOM distributor about

acquiring a proper AC adapter.

• Environment

Avoid using your GFX-8 in environments where it will be

exposed to:

• Extreme temperature

• High humidity or moisture

• Excessive dust or sand

• Excessive vibration or shock

• Handling

Since the GFX-8 is a precision electronic device, avoid

applying excessive force to the switches and buttons. Also

take care not to drop the unit, and do not subject it to shock or

excessive pressure.

• Alterations

Never open the case of the GFX-8 or attempt to modify the

product in any way since this can result in damage to the unit.

• Connecting cables and input and output jacks

You should always turn off the power to the GFX-8 and all

other equipment before connecting or disconnecting any

cables. Also make sure to disconnect all cables and the AC

adapter before moving the GFX-8.

Usage Precautions

• Electrical interference

For safety considerations, the GFX-8 has been designed to

provide maximum protection against the emission of

electromagnetic radiation from inside the device, and protection

from external interference. However, equipment that is very

susceptible to interference or that emits powerful

electromagnetic waves should not be placed near the GFX-8, as

the possibility of interference cannot be ruled out entirely.

With any type of digital control device, the GFX-8 included,

electromagnetic interference can cause malfunctioning and can

corrupt or destroy data. Care should be taken to minimize the

risk of damage.

• Cleaning

Use a soft, dry cloth to clean the GFX-8. If necessary, slightly

moisten the cloth. Do not use abrasive cleanser, wax, or solvents

(such as paint thinner or cleaning alcohol), since these may dull

the finish or damage the surface.

Please keep this manual in a convenient place
for future reference.

Safety and Usage Precautions

2

ZOOM GFX-8

This symbol indicates explanations about
extremely dangerous matters. If users
ignore this symbol and handle the device
the wrong way, serious injury or death
could result.

Caution

This symbol indicates explanations about
dangerous matters. If users ignore this
symbol and handle the device the wrong
way, bodily injury and damage to the
equipment could result.

Warning

Caution

Caution

Caution

Caution

Warning

Introduction

• Versatile array of effects

The Variable Architecture Modeling System (VAMS)

adapts the internal configuration of the unit to achieve

exactly the desired pattern. The GFX-8 provides 69

effects ranging from the sound of famous guitar

amplifiers and other vintage devices to ultra-modern

processing functions. Up to nine effects can be freely

combined for simultaneous use. Modulation effects and

delay/reverb effects allow up to two types of custom

settings to be stored in memory. Any desired setting can

be called up quickly and easily.

• Sophisticated distortion technology

Using new technology developed by Zoom, the GFX-8

can faithfully duplicate the characteristics of famous

guitar amplifiers and preamplifiers. The available

choices range from conventional overdrive to exciting

high-gain fuzz sound. In combination with the built-in

amp simulator and cabinet simulator, this lets you create

realistic distortion tailored to your music. Two types of

custom distortion are also included, letting you build

your own sound from scratch.

• "Easy Edit" feature

During a stage performance, quick editing is possible

using handy selectors and knobs on the top panel of the

unit. You can switch effects, adjust the 4-band equalizer,

control distortion gain, or fine-tune major parameters of

the delay/reverb effects. Operation is quick and intuitive,

just like using a compact effect device.

• MIDI capability

MIDI IN and OUT connectors are provided, allowing

you to hook up a MIDI sequencer or keyboard for

remote control, or to control a MIDI compatible guitar

amplifier or other device from the GFX-8. Memory data

can also be sent and received via the MIDI link.

• Supplied editing software

The GFX-8 is supplied with a CD-ROM containing

software that lets you manage and edit patch libraries on

a computer (Windows 95/98 or Macintosh). The

software also provides access to a user custom area for

detailed adjustments that are not possible on the main

unit.

• Extensive patch library

A patch is a combination of effects and parameter

settings stored in memory, with a name of up to 8

characters. The GFX-8 has room for 80 read/write

patches (4 patches x 20 banks) that can be freely

changed by the user, plus 160 preset patches (4 patches x

40 banks) that are read-only. In total, this gives access to

as many as 240 patches.

• Built-in sampler and jam play feature

The integrated phrase sampler has a recording time of up

to 25 seconds. In addition, there is a jam play feature that

lets you record a 12-second phrase and play it back in

normal, reverse, or scratch mode. Changing the playback

speed is possible without altering the pitch. This feature

comes in handy when copying phrases. The AUX input

lets you connect a stereo source such as a CD or MD

player, to combine with your session or to directly record

with the sampler.

• Designed for use on stage

The tough metal chassis of the unit will withstand use in

a demanding environment. The expression pedal and

foot switches are designed to facilitate your work on

stage. The easy-to-read 8-character display plus a 2-digit

LED panel are great for checking patch names, numbers,

and other settings at a glance. The output level can be set

to +4 dB to match professional specifications.

Thank you for selecting the ZOOM GFX-8 (hereafter simply called the "GFX-8 "). The GFX-8 is a sophisticated
digital effect processor with the following features and functions:

3

ZOOM GFX-8

Introduction

Please take the time to read this manual carefully so as to get the most out of your GFX-8 and to ensure
optimum performance and reliability. Retain this manual, the warranty card and all other documentation for
future reference.

* Windows 95 and Windows 98 are registered trademarks of Microsoft Corporation.
* Macintosh is a registered trademark of Apple Computer Inc.

Naming of Parts

4

ZOOM GFX-8

Display

Top Panel

Rear Panel

GROUP/BANK indicator

DRIVE selector

MOD (modulation) selector

DLY/REV (delay/reverb)
selector

PARM (parameter)

knobs 1 - 4

GAIN knob

PARM (parameter) SELECT
/ADJUST knob

PARM (parameter)
VALUE/ADJUST knob

GROUP/CUSTOM SET key

STORE key

EDIT/CANCEL key

TOTAL key

MIDI key

ZNR/EQ EDIT key

DRIVE key

MOD (modulation) key

DLY/REV (delay/reverb) key

BANK UP/DOWN [MANUAL]
foot switches

Foot switches 1 - 4

expression pedal

INPUT jack

AUX IN jack

EXTERNAL DIST
(distortion) SEND jack

EXTERNAL DIST (distortion)
RETURN jack

OUTPUT R jack

OUTPUT L/MONO jack

OUTPUT PHONES
jack

OUTPUT LEVEL knob

POWER switch

POWER connector

MIDI IN connector

MIDI OUT connector

Naming of Parts

* The MIDI OUT connector can also be switched internally to serve as

MIDI THRU connector (see page 35).

Naming of Parts

Modes

The GFX-8 has five different operation modes, as listed below.

• Play mode

In this mode, patches can be selected and played. This is the

default mode of the GFX-8 that is always active when power is

turned on.

• Manual mode

In this mode, you play your instrument while manually

switching modules on and off.

• Edit mode

In this mode, the effect parameters of the currently selected

patch can be edited (changed).

• Jam play mode

In this mode, you can record a guitar phrase and play it back in

normal, reverse, or scratch style.

• Sampler mode

In this mode, you can use the sampler function to record and

play back a phrase from guitar or a source such as a CD player.

RTM (real-time modulation)

This refers to changing effect parameters in real time. For example,

you can use the expression pedal to change the mix ratio of the

reverb sound, or adjust the delay time during a song using a MIDI

sequencer.

The type and range of the parameter to be changed, as well as the

controller type (expression pedal or MIDI control change

information) can be stored separately for each patch.

5

ZOOM GFX-8

Effect module

An "effect module" in the GFX-8 works like a stand-alone compact

effect device such as a distortion or delay. In the GFX-8, you can

use the four effect modules DRIVE, EQUALIZER, MOD, and

DLY/REV as well as the ZNR (Zoom Noise Reduction) + AMP

SIM (Amp Simulator) simultaneously.

Terms Used in This Manual

This section explains some important terms that are used throughout the GFX-8 documentation.

Effects and parameters

An effect is a specific processing function in a module. The effect

modules DRIVE, MOD, and DLY/REV each have 22 effects, from

which one can be selected. The various settings of an effect that

can be freely modified by the user are called parameters. The GFX-

8 uses two kinds of parameters: effect parameters which are stored

separately for each patch and global parameters which apply to all

patches.

Patch/group/bank

Effect module combinations and effect parameter settings are

stored in memory as "patches". The GFX-8 can store a total of 240

patches. These are divided into 80 read/write patches in the user

groups (U and u) and 160 read-only patches in the preset groups

(A, b, C, d). Each group has 10 banks numbered from 0 - 9, and

each bank has 4 patches which can be selected with the foot

switches 1 - 4 on the top panel of the unit.

Signal flow in the GFX-8

RETURN

EXTERNAL DIST

SEND

IN

INPUT

DRIVE

VOLUME

* When an SFX effect of the DLY/REV module is selected, the

MOD module is automatically disabled.

SFX

AMP SIMZNR EQ MOD

DLY/REV

L/MONO
R

User groups

BANK 4

BANK 3

BANK 2

BANK 1

BANK 0

PATCH 1

PATCH 1

PATCH 1

PATCH 2

PATCH 1

PATCH 2

PATCH 2

PATCH 2

PATCH 3

PATCH 3

PATCH 3

PATCH 3

PATCH 4

PATCH 4

PATCH 4

PATCH 4

Group U

BANK 9

BANK 8

BANK 7

PATCH 1

BANK 6

BANK 5

PATCH 1

PATCH 2

PATCH 1

PATCH 1

PATCH 1

PATCH 1

PATCH 2

PATCH 3

PATCH 2

PATCH 2

PATCH 2

PATCH 2

PATCH 3

PATCH 4

PATCH 3

PATCH 3

PATCH 3

PATCH 3

PATCH 4

PATCH 4

PATCH 4

PATCH 4

PATCH 4

BANK 0

PATCH 1
PATCH 2
PATCH 3
PATCH 4

BANK 8

BANK 7

BANK 6

BANK 5

BANK 4

BANK 3

BANK 2

PATCH 1

BANK 1

PATCH 1

PATCH 1

PATCH 1

PATCH 1

PATCH 2

PATCH 1

PATCH 2

PATCH 1

PATCH 2

PATCH 1

PATCH 2

PATCH 2

PATCH 2

PATCH 3

PATCH 2

PATCH 3

PATCH 2

PATCH 3

PATCH 3

PATCH 3

PATCH 3

PATCH 4

PATCH 3

PATCH 4

PATCH 3

PATCH 4

PATCH 4

PATCH 4

PATCH 4

PATCH 4

PATCH 4

Group u

BANK 9

PATCH 1
PATCH 2
PATCH 3
PATCH 4

BANK 3

BANK 2

BANK 1

BANK 0

PATCH 1

PATCH 1

PATCH 1

PATCH 2

PATCH 2

PATCH 2

PATCH 3

PATCH 3

PATCH 3

PATCH 4

PATCH 4

PATCH 4

Group A Group b Group C

BANK 9

BANK 8

BANK 7

PATCH 1

BANK 6

BANK 5

BANK 4

PATCH 1

PATCH 2

PATCH 1

PATCH 1

PATCH 1

PATCH 1

PATCH 2

PATCH 1

PATCH 3

PATCH 2

PATCH 2

PATCH 2

PATCH 2

PATCH 2

PATCH 3

PATCH 4

PATCH 3

PATCH 3

PATCH 3

PATCH 3

PATCH 3

PATCH 4

PATCH 4

PATCH 4

PATCH 4

PATCH 4

PATCH 4

Preset groups

BANK 4

BANK 3

BANK 2

BANK 1

BANK 0

PATCH 1

PATCH 1

PATCH 1

PATCH 2

PATCH 1

PATCH 2

PATCH 2

PATCH 2

PATCH 3

PATCH 3

PATCH 3

PATCH 3

PATCH 4

PATCH 4

PATCH 4

PATCH 4

BANK 9

BANK 8

BANK 7

PATCH 1

BANK 6

BANK 5

PATCH 1

PATCH 2

PATCH 1

PATCH 1

PATCH 1

PATCH 1

PATCH 2

PATCH 3

PATCH 2

PATCH 2

PATCH 2

PATCH 2

PATCH 3

PATCH 4

PATCH 3

PATCH 3

PATCH 3

PATCH 3

PATCH 4

PATCH 4

PATCH 4

PATCH 4

PATCH 4

BANK 0

PATCH 1
PATCH 2
PATCH 3
PATCH 4

BANK 8

BANK 7

BANK 6

BANK 5

BANK 4

BANK 3

BANK 2

PATCH 1

BANK 1

PATCH 1

PATCH 1

PATCH 1

PATCH 1

PATCH 2

PATCH 1

PATCH 2

PATCH 1

PATCH 2

PATCH 1

PATCH 2

PATCH 2

PATCH 2

PATCH 3

PATCH 2

PATCH 3

PATCH 2

PATCH 3

PATCH 3

PATCH 3

PATCH 3

PATCH 4

PATCH 3

PATCH 4

PATCH 3

PATCH 4

PATCH 4

PATCH 4

PATCH 4

PATCH 4

PATCH 4

BANK 9

PATCH 1
PATCH 2
PATCH 3
PATCH 4

BANK 4

BANK 3

BANK 2

BANK 1

BANK 0

PATCH 1

PATCH 1

PATCH 1

PATCH 2

PATCH 1

PATCH 2

PATCH 2

PATCH 2

PATCH 3

PATCH 3

PATCH 3

PATCH 3

PATCH 4

PATCH 4

PATCH 4

PATCH 4

Group d

BANK 9

BANK 8

BANK 7

PATCH 1

BANK 6

BANK 5

PATCH 1

PATCH 2

PATCH 1

PATCH 1

PATCH 1

PATCH 1

PATCH 2

PATCH 3

PATCH 2

PATCH 2

PATCH 2

PATCH 2

PATCH 3

PATCH 4

PATCH 3

PATCH 3

PATCH 3

PATCH 3

PATCH 4

PATCH 4

PATCH 4

PATCH 4

PATCH 4

Getting Connected

If your guitar amplifier is equipped with a power amplifier input

jack, you can directly connect the OUTPUT L/MONO jack of the

GFX-8 to the power amp input jack, using the GFX-8 as a guitar

preamplifier.

* When using the GFX-8 in this way, it is recommended to activate

the built-in amp simulator (see page 7).

A component with stereo line level output such as a CD player or MD

player can be connected to the AUX IN jack, using a stereo Y

cable. The signal supplied to this jack is not processed by the

effects of the GFX-8 and is sent directly to the OUTPUT jacks.

This allows you for example to listen to a CD while practicing a guitar

phrase.

* Using the sampler function of the GFX-8, it is also

possible to record the signal supplied to the AUX IN jack
(

see page 34).

* When using hi-fi equipment (mixer, audio system or

similar) instead of a guitar amplifier, activating the built-in amp
simulator (

see page 7) is recommended.

Getting Connected

Connection Example (1) Instrument/amplifier connection

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Connection Example (2) Connection to power amp input jack of guitar amplifier

Connection Example (3) CD player/MD player connection

Guitar amplifier

Use a mono cable to
connect the guitar to the
INPUT jack.

Guitar

Use a mono cable to connect the OUTPUT
L/MONO jack only (for a monaural setup) or the
OUTPUT L/MONO jack and OUTPUT R jack to
the guitar amplifier or playback system.

INPUT

EXTERNAL DIST

When using the GFX-8 together
with a distortion device or other
effect, connect the device
between the EXT.DIST SEND
jack and EXT.DIST RETURN
jack.

* The on/off condition and signal output level of a compact effect

connected to the EXT.DIST SEND jack/EXT.DIST RETURN jack
can be stored as part of a patch (see page 20).

SEND

IN OUT

Guitar effect

R

EXTERNAL
DIST
RETURN

OUTPUT
L/MONO

To monitor the sound
with a pair of
headphones, connect the
cable to the OUTPUT
PHONES jack.

AC adapter

MIDI OUTPHONES

Headphone

MIDI IN

MIDI interface

When using the supplied software to edit the patches
of the GFX-8 on a computer, connect the MIDI
interface of the computer to the MIDI IN/OUT jacks of
the GFX-8, using MIDI cables.

POWER AMP.INPUT

MIDI IN

MIDI
OUT

Guitar amplifier

Computer

INPUT

Guitar

CD player

AUX
IN

Guitar

INPUT

OUTPUT
L/MONO

Playback system

OUTPUT

R

L/MONO

Preparations

1.

Immediately after turning on the GFX-8, press the
TOTAL key.

The GFX-8 switches to the edit mode which allows you to

change various internal settings. The TOTAL key flashes red, and

the display shows "PATCHLVL".

2.

Press the TOTAL key twice, so that it flashes orange.

The display indication changes to "AMP SIM".

3.

Use the PARM knobs 1 - 4 to select the amp simulator
setting that matches the playback system.

While the TOTAL key is flashing orange, the PARM knobs 1 -

4 serve to set the amp simulator operation.

(1) PARM knob 1 AMP SIM

Switches amp simulator ON/OFF.

(2) PARM knob 2 AMP TYPE

Selects the amp simulator characteristics as follows (only if

parameter 1 is set to "on".

Line connection

•LC General combo type amplifier

•Lb Bright combo type amplifier

•LS Stack type amplifier

Power amplifier connection

•AC Combo type amplifier

•AS Stack type amplifier

(3) PARM knob 3 CABINET

Selects the speaker cabinet simulator type.

•oF Cabinet simulator OFF

•C1 Combo amplifier cabinet with one 12" speaker

•C2 Combo amplifier cabinet with two 12" speakers

•ST Stack amplifier with four 10" speakers

•WL Stack amplifier tower with four 10" speakers

(4) PARM knob 4 CABI DPT

Adjusts the depth of the cabinet simulator effect, in the range

from 0 - 10.

Recommended settings for various connection methods and

playback systems are as follows.

Connected to guitar amplifier input jack

Connected to power amplifier input jack of guitar
amplifier

Connected to hi-fi playback system such as mixer or
audio system

4.

When the settings are complete, press the STORE key
twice.

T`he new amp simulator setting is stored. This setting is

retained also when power to the unit is turned off.

1.

Verify that the AC adapter, instrument, and
amplifier/playback system are correctly connected to
the GFX-8.

Before making any connections, be sure to turn power to all

components off. Also, you should turn the volume on the

amplifier or playback system to minimum, and set the

OUTPUT LEVEL knob on the rear panel of the GFX-8 to the 12

o'clock position.

2.

Turn the system on in the order GFX-8 amplifier.

3.

While playing your instrument, adjust the volume
control on the amplifier, the level control of the
instrument, and the OUTPUT LEVEL knob of the
GFX-8 to a suitable position.

This section explains the steps you should take before playing sound through the GFX-8.

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Power Up

Setting up the Amp Simulator

Preparations

The GFX-8 incorporates an amp simulator that can duplicate the electrical characteristics and cabinet sound of various
guitar amplifiers. Before starting to use the GFX- 8, we recommend that you set up the amp simulator so that it matches the
connection type of the playback system or guitar amplifier. This will assure that you get optimum results from the GFX-8.

(1) PARM knob 1

(2) PARM knob 2

(3) PARM knob 3

(4) PARM knob 4

Quick Guide (Trying Out the Unit)

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In play mode, the name of the currently selected patch is shown on the display.
The group and bank number of the patch can be checked on the GROUP/BANK indicator.

Patch name Group Bank number

• For details on patch/bank/group
switching, refer to p. 10.

* If you press the foot switch whose LED is lit, the GFX- 8

goes into the bypass condition.

To switch the patch within the same bank, press one of the foot switches 1 - 4
whose LED is not lit.

To switch to a patch from another bank
number or group, use the BANK
UP/DOWN foot switches and the foot
switches 1 - 4 to select the bank number
and group.

RTM (real-time modulation) refers to changing an effect with the expression pedal in
real time.

Rock the expression pedal back and
forth.

• For information on effects that allow RTM control, see p. 30.

• For more information on the use of the expression pedal, see p. 41.

The effect changes as the expression
pedal is moved. The parameter that is
controlled can be programmed for each
patch. Try out this function to see which
parameter changes for the stored patches.

The expression pedal incorporates a
switch that operates when the pedal is
pushed firmly down. The switch turns the
module for which RTM control is possible
on and off.

Push the expression pedal fully down.

Selecting the patch/bank number/group

To alter the effect with
RTM

Move back and forth Push fully down

Quick Guide (Trying Out the Unit)

The Quick Guide explains the basic steps for using the GFX-8 in play mode. This lets you use the unit right away, to check out
what it can do.

Quick Guide (Trying Out the Unit)

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• For information on using the amp
simulator, see p. 7.

• For information on using the built-in tuner,
see p. 12.

• For information on record/playback of
phrases (sampler), see p. 34.

• For information on special playback of
recorded phrases (jam play), see p. 32.

Adjusts the ultra-high
frequency range.

Adjusts the high
frequency range.

Adjusts the medium
frequency range.

Adjusts the low
frequency range.

Turn the selector to choose the desired effect in the respective
module (DRIVE, MOD, DLY/REV).

Switches the respective module (DRIVE, MOD, DLY/REV)
ON and OFF and switches the group for selectable effects.

* During adjustment, the key for that module flashes.
* The parameter that can be adjusted differs for each patch.

The steps listed below will result in a change of the patch sound quality and effect intensity.

To adjust the patch sound quality,
operate PARM knobs 1 - 4.

To change the effect, use the DRIVE,
MOD, DLY/REV selectors and keys.

To change the effect intensity, operate the
GAIN, PARM SELECT, or PARM VALUE knob.

To store an edited patch, press the STORE
key twice.

• For more information on easy edit, see p. 11.

• For more information on full edit, see p. 14.

Adjusts a major parameter
of the DRIVE module.

Adjusts a major parameter
of the DLY/REV module.

Adjusts a major parameter
of the MOD module.

If required, change the store target with the BANK
UP/DOWN foot switches and foot switches 1 - 4
before pressing the STORE key twice. Note that only
patches in a user group can be selected as store
targets.
If you press the CANCEL key before pressing the
STORE key twice, the store procedure is aborted
and the unit returns to the play mode.

To select other effects or adjust the effect intensity, use
the easy edit function.

3

Other useful functions

5

To store an adjusted
patch

4

• For more information on storing patches,
see p. 18.

Quick Guide (Trying Out the Unit)

Listening to Patches (Play Mode Operation)

In play mode, the following information is shown on the panel.

Selecting and playing patches stored in the memory of the GFX-8 is called "play mode". The GFX-8 is always in this mode
immediately after being turned on. This section describes how to use the functions available in this mode.

Listening to Patches (Play Mode Operation)

Panel Indication in Play Mode

Selecting a Patch

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1.

To switch patches in play mode, press a foot switch 1

- 4 whose LED is not lit.

In play mode, foot switches 1 - 4 serve to select a patch from the

same group/bank. The LED of the currently selected foot

switch is lit.

2

To select a patch from a different group/bank, press
the BANK UP or DOWN foot switch to switch the
group/patch, and then use the foot switches 1 - 4 to
select the new patch.

For example, when the BANK UP foot switch is pressed

repeatedly, the group/bank number changes as follows.

The patch is not switched as long as you only switch the

bank/group (changed section of GROUP/BANK indicator

flashes). It is switched only after you press one of the foot

switches 1 - 4 (the flashing of the GROUP/BANK indicator

stops).

If desired, you can limit the action of the BANK UP/DOWN

foot switches to select only user group banks, or only

preset group banks. To do this, press the GROUP key.

With each push of this key, the selectable groups are

cycled as follows.

Both

groups

Both

groups

User group

only

Preset group

only

HINTHINT

User group

Preset group

(5) The foot switch LED

of the currently
selected patch
lights up.

(7) When the LED is red, the effect

is from group A, and when it is
green, it is from group B.

When the LED is out, the effect

is off.

(6) Lights up in red if the EQ module

in the patch is ON.

U and u are user groups,
A - d are preset groups.

(3) Bank number (0 - 9)

(2) Group (U, u, A, b, C, d)

(4) When a dot (.) is shown here, the user group/preset

group patches can be selected continuously.

(1) Patch name

Listening to Patches (Play Mode Operation)

1.

To switch the effect used in the DRIVE, MOD, or
DLY/REV module, operate the selector and key for the
respective module.

When the effect is switched, the name of the new effect is shown on

the display for about 2 seconds. The EDITED mark (.) in the

GROUP/BANK indicator lights up. This indicates that an effect

parameter of this patch has been edited. The mark disappears when the

setting is changed back to the original setting.

While only the effect group was switched, the previous

effect is still active. The change does not occur until the

selector for the respective module is operated. Therefore

the selector position and the actual effect may differ

during this interval.

2.

To adjust a major parameter of each module, operate
the following knobs.

When one of the above knobs is moved, the display shows the

parameter name and the GROUP/BANK indicator shows the

parameter value for about 2 seconds.

Which parameter is assigned to the GAIN knob, PARM

SELECT/ADJUST knob, and PARM VALUE/ADJUST knob

depends on which effect is selected for that module (

see page 19 - 29).

• Trying to change effects or parameters which are set to

OFF in the current module has no effect. In this case,

the indication "OFF" is shown on the display.

• All changes made with the easy edit function are

temporary. Settings revert to the original condition when

the patch is switched. When wishing to keep the

changes, you must store the patch (see page 18).

Parameter name Setting value

[GAIN knob]

Adjusts a major parameter of the DRIVE module. In
almost all patches, this is the GAIN parameter that
determines the distortion intensity.

[PARM SELECT/ADJUST knob]

Adjusts a major parameter of the MOD
module.

[PARM VALUE/ADJUST knob]
Adjusts a major parameter of the
DLY/REV module.

PRESENCE:
Adjusts boost/cut in the ultra-high frequency range.

[PARM knobs 1 - 4]

Adjust the following EQ module parameters.

TREBLE:
Adjusts boost/cut in the high frequency range.

MIDDLE:
Adjusts boost/cut in the medium
frequency range.

BASS:
Adjusts boost/cut in the low
frequency range.

[EQ]

NOTE

EDITED mark (.)

Select DRIVE module effect.

Select MOD module effect.

Select DLY/REV module
effect.

Respective module is OFF.

Module is ON and effect from group A
(upper labels) is selected.

Key out or slowly flashing red

Key lit/flashing red

Module is ON and effect from group B
(lower labels) is selected.

Key lit/flashing green

Switches the respective module (DRIVE, MOD,
DLY/REV) ON and OFF and switches the group
for selectable effects. With each push of the key,
the unit cycles through the following three states.

NOTE

To edit patches of the GFX-8, the user normally will activate the edit mode, select the desired parameter, and change the setting.
However, it is also possible to switch effects in modules and change major effect parameters in play mode. This is called the easy
edit function.

Using the Easy Edit Function

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1.

To set the GFX-8 to the bypass (mute) condition,
press and immediately release the foot switch 1 - 4
that has selected the currently active patch (the foot
switch whose LED is lit).

In play mode, when you quickly press the foot switch whose LED

is lit, the GFX-8 switches to the bypass condition. The foot

switch LED now flashes and the indication "BYPASS" is

shown on the display.

If you press a foot switch with lit LED for longer than 1

second and then release it, the GFX-8 switches to the mute

condition. The foot switch LED now flashes and the indication

"MUTE" is shown on the display.

2.

Play the open string you want to tune, and watch the
GROUP/BANK indicator. The GFX-8 automatically
detects the pitch and the GROUP/BANK indicator
shows the note which is closest to the current pitch.

For tuning, always play a single note. If you play a chord,

the pitch will not be detected correctly.

3.

When the GROUP/BANK indicator shows the desired
note, perform fine tuning while watching the display.

4.

Tune the other strings in the same way.

5.

When tuning is completed, press the foot switch
whose LED is flashing once more.

The GFX-8 returns to the play mode.

If desired, you can change the setting of the unit so that

pressing the foot switch whose LED is lit will not activate

the bypass/mute condition. For details, please refer to

page 41.

NOTE

Pitch is low

Pitch is high

Pitch is correct

NOTE

Release after more than 1 second

Lit Flashes

Release immediately

Lit Flashes

The GFX-8 incorporates an auto-chromatic tuner for guitars. To use the tuner function, the built-in effects must be bypassed
(temporarily turned off) or muted (original sound and effect sound turned off).

Using the Bypass (Mute)/Tuner Function

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Listening to Patches (Play Mode Operation)

Listening to Patches (Play Mode Operation)

1.

In play mode, select a patch.

2.

Press the BANK DOWN foot switch and hold it down
for at least 1 second.

The GFX-8 switches to the manual mode. The display shows

"MANUAL".

3.

Operate foot switches 1 - 4.

In manual mode, foot switches 1 - 4 have the following

functions.

The parameter to be controlled by foot switch 4

(CONTROL switch) is set using the TOTAL module (see

page 29).

4.

To return to the play mode, press the BANK DOWN
foot switch once more.

NOTE

Hold down for
at least 1 second

1.

In play mode, press the foot switch 1 - 4 whose LED is
lit, to set the GFX-8 to the bypass/mute condition.

2.

Rotate the DLY/REV (PARM VALUE) knob to adjust
the reference pitch. When this knob is operated, the
current reference pitch is shown on the display. The
initial setting is "440" (center A = 440 Hz).

The available setting range is "435" (center A = 435 Hz) - "445"

(center A = 445 Hz) in 1-Hz steps.

3.

When tuning is completed, once more press the foot
switch whose LED is flashing.

The GFX-8 returns to the play mode.

When the GFX-8 is turned off and on again, the reference

pitch will be reset to "440".

NOTE

Reference pitch value

The condition where foot switches 1 - 4 can be used to switch the modules in a patch ON and OFF individually and where specific
parameters can be adjusted is called "manual mode". In manual mode, the modules in a patch can be used like independent
compact effects.

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Switching Modules On and Off During Play (Manual Mode)

Adjusting the Reference Pitch of the Tuner

After the GFX-8 is turned on, the tuner reference pitch is always "center A = 440 Hz". If desired, you can change the
reference pitch. This is useful for example to match your instrument to another instrument or sound source whose pitch cannot
be changed easily, such as an acoustic piano or a CD. To do this, first change the reference pitch of the GFX-8 and then use to
to perform tuning of your guitar.

Changing the Sound of a Patch (Edit Mode)

1.

In play mode, select the patch you want to edit.

The patch can be from a user group or preset group. However,

because patches in the preset groups are read-only, after you have

edited a patch, you can only select a user group patch as store

target.

2.

Press the EDIT key.

The EDIT key LED lights up, and the GFX-8 enters the edit

mode.

In edit mode, the following information is shown on the panel.

The keys and foot switch LEDs of modules that are ON in the

current patch are lit.

The key of the module selected for editing flashes.

When edit mode was activated immediately after switching

patches, the TOTAL key flashes. When edit mode was

activated after easy edit, the key of the edited module

flashes.

3.

Use the panel keys to select the module you want to
edit.

In edit mode, the following keys serve to select the module for

editing. The selected key flashes.

If a module is selected that is set to OFF in the current

patch, editing is not possible (display shows "OFF").

However, ZNR settings can be made also when the EQ

module is OFF.

4.

Use the PARM SELECT knob to select the parameter
you want to edit.

When you turn the PARM SELECT knob, the effects of the

module selected in step 3 and the effect parameters are shown in

turn on the display. (Which parameter is shown depends on

the currently selected module and effect). The currently

selected parameter setting can be checked using the

GROUP/BANK indicator.

NOTE

DRIVE, MOD, DLY/REV key

ZNR/EQ EDIT key

TOTAL key

MIDI key

Select the DRIVE, MOD, or
DLY/REV module respectively.

Make MIDI settings
(see page 35).

Selects the EQ module or ZNR.
With each push of the key, the color of the flashing LED
changes, and the edit target changes as follows.

Flashing red EQ module page 1
Flashing green EQ module page 2
Flashing orange ZNR

Flashing red Set patch name and patch level .
Flashing green Set RTM and CONTROL switch

functions (see page 30).

Flashing orange Make amp simulator (global

parameter) settings .

Serves to set the patch name and patch level (overall output
level of the patch) and other parameters applying to the entire
patch, as well as global parameters that apply to all patches.
With each push of the key, the color of the flashing LED
changes, and the edit target changes as follows.

HINTHINT

Currently selected parameter name

Currently selected parameter value

The condition where you can change the parameters that make up a patch to create your own sound is called "edit mode". This
section describes how to use edit mode.

Changing the Sound of a Patch (Edit Mode)

Basic Edit Mode Steps

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The basic steps that are normally taken in edit mode are explained here. Besides these, the edit mode also provides a short cut
to quickly edit a specific parameter (

see

page 16).