Alesis GT User manual

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

1
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.

2
Features
¥ 20 Hz to 20 kHz frequency response
¥ Up to 11 simultaneous effects (6 analog, 5 digital) and programmable
effects loop
¥ Backlit, descriptive 32 character LCD display
¥ Touch sensitive programming buttons for quick editingÑpress
harder to scroll faster through the display
¥ 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,
Chamber, Hall, and Reverse
¥ Several types of delay, including: Ping Pong Delay,
Mono Delay, Stereo Delay, and Multitap delay
¥ Several types of Pitch Shift, including: Mono
Chorus, Stereo Chorus, Mono Flange, Stereo Flange,
Pitch Detune, and Phase Shifter
¥ Three types of Digital EQ, including: 3 band
Parametric, 5 band Parametric, and 11 band Graphic
¥ Any or all Alesis presets can be recalled from ROM
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

3
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 AC-
powered 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
Right Input Right Output
to mono amp,
PA, or mixer
From
guitar
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).

4
Mono In, Stereo Out
Right
Input Right Output
to stereo amp,
PA, or mixer
Left
Output
From
guitar
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
Right
Input Right Output
to stereo amp,
PA, or mixer
Left
Output
From
guitar
Left
Input
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.

5
Mono Send, Mono Return Effects Loop
Right Input Right Output
to effects
loop return
from effects
loop send
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
Right
Input Right Output
to effects loop
stereo returns
Left
Output
From effects
loop send
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.

6
Stereo Send, Stereo Return Effects Loop
Right
Input Right Output
to effects
loop returns
Left
Output
From effects
loop sends
Left
Input
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.

7
Interfacing with Mixer Stereo Effects Sends
Right
Input Right Output
to mixer
returns
Left
Output
From mixer
sends
Left
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.
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)

8
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.

9
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.

10
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.

11
MIDI Program Selection
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.
MIDIIn
Footswitch
MIDI Out
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.

12
MIDI Controller Pedal Hookup
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.
MIDIIn
Footswitch
Controller Pedal
MIDIIn
Footswitch
Controller Pedal
MIDI
Merger