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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 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 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 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 MIDI SUPPLEMENT..116

8.1 MIDI BASICS...116

8.2 MIDI HARDWARE....116 8.3 MIDI MESSAGE BASICS...117 8.4 CHANNEL MESSAGES...117 8.4A Voice Messages...117 8.4B Mode Messages...119 8.5 SYSTEM COMMON MESSAGES...120 8.6 BOOKS ON MIDI...121 8.7 VIDEOS ON MIDI...121
CHAPTER 1 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 staticyou can control them in real time with Continuous Controller foot pedals, or with sequencers or keyboards.

Features

20 Hz to 20 kHz frequency response Up to 11 simultaneous effects (6 analog, 5 digital) and programmable effects loop Backlit, descriptive 32 character LCD display Touch sensitive programming buttons for quick editingpress 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 amps effects loop. This lets the QuadraVerb GT process the amp's internal sound, and in some cases, lets you use the amplifier's preamp section as an alternate to the QuadraVerb GT's internal preamp. Following are some typical hookups, followed by information on proper
level-setting. All inputs and outputs are unbalanced lines. Turn your amplifier volume all the way down when patching the QuadraVerb GT into your system!

AC Transformer Hookup

Plug the QuadraVerb GT's AC adapter into the wall. The smaller plug inserts into the 9 VAC power jack on the QuadraVerb GT's rear panel. To prolong the AC adapter's life, unplug it from AC power when not in use (turning off the QuadraVerb GT's power switch does not disconnect the AC adapter from AC power). It's good practice to plug all your ACpowered devices into a switched power strip, so that turning off the strip turns off power to all your gear.

1.3 AUDIO HOOKUPS

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

Mono In, Mono Out

From guitar

Right Input

MIDI In MIDI Out

Footswitch
Several devices can generate program change commands: MIDI footswitch This is probably the option that most guitarists will use. A MIDI footswitch sends program changes in response to footswitch presses. Many companies make MIDI footswitches; their manuals explain how to program the footswitch to send out particular program changes. MIDI sequencer A sequencer can record and play back MIDI data, including program change commands. Synthesizer Selecting a new program on a synthesizer usually sends out a corresponding program change command. This allows any signal processor hooked up to the synth to change its settings in response to different synth programs. Other effects boxes If you use more than one effects box, calling up a program on it will often send a corresponding program change through its MIDI Out. NOTE: Your QuadraVerb GT and the MIDI footswitch must both be set to the same MIDI channel to execute program changes.
MIDI Controller Pedal Hookup
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 dont 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.

MIDI In Controller Pedal

MIDI In
Controller Pedal MIDI Merger Footswitch

MIDI Thru/Out Hookup

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

MIDI Thru/Out

In addition to the Thru function, data generated by the QuadraVerb GT can be sent to other MIDI units. This is more of a feature for advanced MIDI users and is described in sections 5.5 and 5.6 on QuadraVerb GT System Exclusive options (for more information on System Exclusive information, see the MIDI supplement). Generally, the data generated from the QuadraVerb GT is used for one of two purposes: Transfer program data directly from one QuadraVerb GT to another. Send program data to a such as the Alesis DataDisk or other MIDI storage device in order to back up the data inside the QuadraVerb GT.

Panning and Tremolo

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

Ring Modulation

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

Tunable Resonators

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

Sampling

Sampling is the process of digitally recording a signal into the QuadraVerb GT's memory, which can then be triggered via an external audio input (e.g., a snare drum sound coming from a tape track), a front panel button, or a MIDI note. Different MIDI notes will transpose the sample. Sampling is useful if you want to capture a particular effect or chord change, then play over it. Try it in the studio for drum sound replacement, reproducing unusual vocal effects, etc.
The multiple effects are all placed in parallel. Each effects output feeds a
mixer, and is variable so that you can change the balance of that particular effect with respect to the overall sound. The effect input can come from the main input if you only want the effect to process the dry sound, but in many configurations, the effect can get its input from the output of other effects, or from a combination of processed and dry sounds.

Modulation

As mentioned earlier, many QuadraVerb GT parameters can be changed in real time via pedals that generate continuous controller commands, or from commands issued by a sequencer or synthesizer. Continuous controller pedals are available from a variety of manufacturers at various price points. These generate signals that are tagged with a particular controller identification number. If you set a QuadraVerb GT parameter to be controlled by this particular controller number, moving the pedal will change the QuadraVerb GT parameter. Modulation consists of choosing up to 8 target parameters to be modulated by any one of several types of MIDI source data types (pitch bend, aftertouch, note number, and note velocity as well as continuous controllers). Several parameters can be changed by one controller, so that, for example, moving a pedal could increase chorus depth and boost the midrange frequencies.

#4 Preamp > 5 Band EQ > Tremolo/Panning > Pitch Change > Delay

Configuration 4

Pitch Input INPUT Delay Input 1

Delay Input Mix

5 BAND EQ

EQ Output

Pitch Output

Delay Output

This is just the ticket for rich chorus sounds. Use the 5 Band EQ to shape your timbre, Pitch Change to add chorusing (or other pitch effects such as flanging, etc.), and Delay to add evocative echo effects. Using the Multi Tap option in the Delay module creates unusual echo effects along with chorusing. The Pitch module can switch its input between preamp or EQ signals. The Delay modules Delay Input Mix control chooses a blend between the output of the Pitch module, or the preamp or EQ signal (as selected by the Delay Input 1 switch).
Multi Tap delay is also available in this mode along with the standard mono, stereo, and ping-pong delays. Up to eight taps are available along the delay line; each tap has variable delay time, panning, volume, and feedback. For more details about multitap delays, see section 4.5. Panning and Tremolo are available in this configuration, and are in series with the EQ signal line. The Preamp Signal Pre/Post EQ switch chooses whether the Preamp Output comes from before or after the EQ.
#5 Preamp > 3 Band EQ > Reverb

Configuration 5

Reverb Input INPUT
REVERB + CHORUS PREAMP 3 BAND EQ
Preamp Pre/Post EQ Delay Output Effects Output
This is the recommended configuration when you want the best possible reverb sound. By restricting the number of effects, the QuadraVerb GT can devote its full computing power to creating awesome reverberation effects. However, EQ is still available for additional tone shaping, as is a simpler version of chorusing.
#6 Preamp > Ring Modulator > Delay > Reverb

Configuration 6

Ouput Shift Mix Up INPUT Delay Input Mix

Reverb Input 1

REVERB PREAMP RING MOD
Down Delay & Reverb Shift Mix
Reverb Input 2 Reverb Output Delay Output Effects Output

Ring Modulator Output

This configuration features the Ring Modulation in conjunction with Delay and Reverb. The Ring Modulator is not available in other configurations. The Ring Modulator produces two outputs, both of which are mathematically derived (sum and difference frequencies) from the input signal. The Ring Modulator output can pan between these two output signals, as can the Delay & Reverb Shift Mix control, which chooses a blend of both outputs to send to the Delay and Reverb inputs.
#7 Preamp > Resonators > Delay > Reverb

Configuration 7

Reverb Input 1 Delay Input Mix

RESON 1

RESON 2 PREAMP RESON 3 RESON 4 RESON 5
Resonator Output Reverb Input 2

REVERB

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

#8 Preamp > Sampling

Configuration 8
Trigger Audio Trigger MIDI Note Looping On-Off Start

Length

Trigger In

Pitch In

Sampling Output

SAMPLING

Pre-Amp Signal OUTPUT
In this configuration, you can record sounds (processed by the Preamp if desired) into the QuadraVerb GT and play them back in a variety of ways.
CHAPTER 3 - BASIC EDITING TECHNIQUES
Editing is the key to using the QuadraVerb GT to its fullest potential. If you like a sound but want more reverb, less treble, more distortion, or whatever, editing is the answer. Make sure that if you develop a custom set of programs, that you save your data to some form of MIDI system exclusive storage device, like the Alesis DataDisk (see sections 5.5-5.6).

3.1 HOW EDITING WORKS

The QuadraVerb GT contains five Effects Groups, each with its own corresponding front panel selection button: Reverb, Delay, Pitch, Equalization (EQ), and Guitar Preamp (Pre-Amp). These all contain editable parameters. Four other editable functions (with front panel buttons) are also available: MIDI, Name/Mod, Mix, and Configuration. The basic editing procedure is the same for whatever you want to edit; well get into specifics later.
1. Select What You Want to Edit
Push the button associated with the Effect Group (Reverb, Delay, Pitch, EQ, Preamp) or function (MIDI, Config, Mix, Mod) you want to edit. The LED in the middle of the button will light.
2. Select the Page with the Parameter to be Edited
Each effect/function includes several pages. Each page shows the name and value of one (or sometimes more) parameters, and each parameter controls some particular aspect of the QuadraVerb GTs sound or operation. Most effects or functions require multiple pages to show all available parameters. The page's upper display line shows the parameter name, and the lower line, the parameter value. Press the PAGE UP and DOWN buttons to select a page containing a parameter to be edited. The harder you press the PAGE button, the faster the pages will scroll. NOTE: The NAME/MOD button is the exception to this rule,as it

3.4 RENAMING PROGRAMS

You may want to give your edited program a distinctive name. 1. Press the NAME/MOD button. The LED in the middle of the button will light and the display says: EDIT NAME: (Name of Song) 2. Use the PAGE buttons to select the character to be changed. Characters available (in addition to a blank space, Yen symbol, and left and right arrows) are: ! ( / 6 = D K R Y a h o v } ) > E L S Z b i p w # * ? F M T [ c j q x $ + @ G N U ] d k r y % , 3 : A H O V ^ e l s z & 4 ; B I P W _ f m t { . 5 < C J Q X ` g n u |
3. Use the VALUE buttons to select the desired character. To enter a space, press both VALUE buttons simultaneously (or press the DOWN VALUE button and scroll to the last character of the character list, which is a blank space). 4. Repeat steps 2 and 3 until the program is named. 6. To store the name, press the STORE button twice. 7. Press any button other than PAGE or VALUE to exit the Name page.
3.5 RECALLING INDIVIDUAL FACTORY PROGRAMS
1. Press STORE. The LED in the middle of the button will light. 2. Press the PAGE UP button to select the Recall page. The display says:
RECALL ALESIS PROG YY INTO XX 3. Press either VALUE button to select the program to be recalled (the first parameter). 4. Press the PAGE UP button again to move the cursor under the second parameter. 5. The factory program will be recalled into the program selected as the second parameter. Press either VALUE button to select this program number. 6. Press STORE to complete the recalling operation.
3.6 RECALLING ALL FACTORY PROGRAMS
1. Press STORE. The LED in the middle of the button will light. 2. Press the PAGE UP button three times. The display says: RECALL ALL 90 ALESIS PROGRAMS 3. Press STORE and all the program locations will be occupied by factory programs. Any other data will be overwritten.
CHAPTER 4 EDITING CONFIGURATION PARAMETERS
In this section, well describe how to select a configuration, then how to edit the parameters for each configuration. Please refer to the configuration block diagrams in section 2.2 for details on how particular mixing and switching parameters work with a particular configuration. Remember that after selecting a configuration, the PAGE buttons select the various pages with different parameters. If a page has more than one parameter, the PAGE buttons also move between those parameters. Once a parameter is selected, as indicated by a cursor (small underline), use the VALUE buttons to change the parameter value. Sampling is such a different type of application that it has its own chapter. All sampling parameters are covered in that chapter. Important! In many of the following sections, a diagram will show what you can expect to see when you call up a particular page. The parameter value shown for each page will usually be representative, but when you actually call up the page on the QuadraVerb GT, a different parameter value from the one shown in the manual may appear.

Reverb Density (configs 1, 2, 5, 6, 7)
The display shows: REVERB DENSITY: 4
Usually, in natural acoustic spaces, some time elapses between the first reflection and all other reflections that make up the reverb sound. If you listen to only the reverb with Density set to 1, you will hear the source sound repeat (the first reflection), a short bit of silence, then the onset of the rest of the reverb. Increasing the Density shortens the time between the first reflection and the remaining reverb reflections. At the maximum setting of 9, the reverb will seem to explode since the first reflection will no longer be perceived as a separate echo. This parameter is very useful with percussive sounds, since an isolated first reflection may sound like an additional percussive hit. It is available in all of the reverbs except for Hall 1 and Hall 2.
Reverb Low Frequency Decay (configs 1, 2, 5, 6, 7)
The display shows: LOW FREQUENCY DECAY: -40
Separating the decay times for the high and low frequencies changes the timbral quality of the reverb over time. The value is always a negative number since this parameter shortens the time of reverb with low frequency content compared to the master reverb decay time parameter.
Reverb High Frequency Decay (configs 1, 2, 5, 6, 7)
The display shows: HIGH FREQUENCY DECAY: -40 Separating the decay times for the high and low frequencies changes the timbral quality of the reverb over time. The value is always a negative number since this parameter shortens the time of reverb with high frequency content compared to the master reverb decay time parameter.
Reverb Gate Status (configs 1, 2, 5, 6, 7)
The display shows: REVERB GATE: ON The level of natural, acoustic reverb decays gradually to zero. Gated reverb abruptly shuts off the reverb tail after a user-settable elapsed time. The next few parameters control the time the gate stays open, the amount of time it takes to close, and the residual reverb level that remains after the gate has closed. NOTE: Don't confuse the Reverb Gate Status parameter with the Noise Gate parameter found in the preamp section. The Reverb Gate is a function of the Reverb section.
Reverb Gate Hold Time (configs 1, 2, 5, 6, 7)
The display shows: REVERB GATE HOLD TIME: 00 This parameter sets the amount of elapsed time (00-99) before the gate closes and cuts off the reverb tail.

Programmable Tone Curves

To simplify the process of getting a great guitar sound (after all, you'd rather play, right?), each configuration in the Quadraverb GT includes six preset tone curves with EQ and/or resonator parameters that have been pre-programmed to yield certain types of guitar tones with a minimum of programming. You can easily select one of these tones and store it to the program you're working on, or, if you wish, you can use the presets as starting points for creating your own custom tone curves. You might want to create tone curves for specific programs to be used with specific guitars, for example.
4.8 EDITING 3-BAND EQ AND RESONATOR PARAMETERS (config 1)

EQ Preset

The display says: EQ PRESET: U SER This page allows you to access 6 preset tone curves, or to create your own curve from scratch. The EQ and/or resonator parameters of the 6 preset curves have been programmed to give you a variety of tones to choose from. To listen to each tone curve, press the Up VALUE button which will scroll through presets 1 through 6. If you find a preset you like, you can store it to the current program by pressing the STORE button twice. To use a preset as a starting point for your own custom tone curve, simply edit its EQ and/or resonator parameters until you have the sound you want (for more about the specific parameters, see their explanations below). Then press the STORE button twice. This will store the edited tone curve as part of the program that you are currently working on. The next time you call up that program, your edits will appear as the program's USER curve. Configuration 1 has 6 tone curves. They are: #1 (3 Band EQ Mode) #2 (3 Band EQ Mode)
#3 (3 Band EQ Mode) #4 (3 Band EQ Mode) #5 (2 Resonator + 1 Band EQ Mode) #6 (2 Resonator + 1 Band EQ Mode)

EQ Mode

The display says: EQ MODE: R ESONATORS + EQ This page switches between the 3 BAND EQ and RESONATORS + EQ modes.
Resonator Tune (Resonators + EQ mode only)
The display says: RESONATOR 1 TUNE + 00 SEMI TONE The PAGE buttons switch between the 2 resonators, as shown by the upper line. The VALUE buttons tune the resonators in semitones over a five-octave range, from -24 semitones to +36 semitones.
Resonator Decay (Resonators + EQ mode only)
The display says: RESONATOR 1 DCY: 90 This sets the decay time for resonator 1. The higher the number, the longer the decay.
Resonator Amplitude (Resonators + EQ mode only)
The display says: RESONATOR 1 AMP: 99 This sets the volume level for resonator 1. The higher the number, the louder the output of the resonator. Please note that if both resonators are assigned a value of 00, you will not hear any sound in this configuration. Pressing the PAGE up button will show the Tune, Decay, and Amplitude pages for Resonator 2.

The display says: RESONATOR LEVEL: 99 This mixes the resonator signal into the master effects output bus.

CHAPTER 5 SAMPLING

The QuadraVerb GT can record an audio sample of up to 1.55 seconds. During playback, the sample start and length times can be altered for special effects or to trim the playback of the sample to the actual start point of the sound. The sample can also be played back in its entirety (one shot) or continuously repeated (looping). Several external sources can trigger the sample, including an incoming audio source, MIDI note on, note off, and note number/pitch message, which allows the sample to be played back from a MIDI keyboard. CAUTION: A sample or edited version of a sample cannot be saved either internally or via MIDI and will remain in memory only as long as the power remains on. If you sample something you do not want to lose, record it on some other medium, such as a cassette or DAT recorder, before shutting off power to the QuadraVerb GT. Any time that you change configurations or programs you will lose your sample.
5.1 SELECTING THE SAMPLING CONFIGURATION
Configuration 8 is used for sampling. All sampling parameters are accessed through the DELAY module (although the EQ button is used for triggering and stopping sample playback). To select this configuration: 1. Press the CONFIG button. 2. Press the UP VALUE button until the display reads: CONFIGURATION: SAMPLING

5.2 RECORDING A SAMPLE

There are two ways to record a sample. In the first (the easiest way to get a good sample), the QuadraVerb GT waits for the incoming audio to trigger recording. With the second method, pressing the front panel BYPASS button initiates recording.
Recording By Audio Trigger
1. Press the DELAY button. The display says: SAMPLE PLAYBACK: LOOPING (The lower line may also show ONE SHOT or AUDIO TRIGGER.) This page is primarily for playback and can be bypassed for now. 2. Press the PAGE UP button three times. The display says: AUDIO TRIGGER SAMPLING: ON 3. Use the VALUE buttons to select Audio Trigger On mode (if it is turned off). 4. Press the BYPASS button. The display says: WAITING FOR AUDIO THRESHOLD 5. Send a signal to the QuadraVerb GT. When the first LED (-18dB) lights, the input signal has passed the audio threshold and recording has begun. For the best signal quality, vary the input level control so that the -6dB LED lights. The signal, and sample, will be distorted if the red "Clip" LED lights.
Recording from the Front Panel
1. Press the DELAY button. The display will read: SAMPLE PLAYBACK: LOOPING (The lower line may also show ONE SHOT or AUDIO TRIGGER.)
This page is primarily for playback and can be bypassed for now. 2. Press the PAGE UP button until the display says: AUDIO TRIGGER SAMPLING: ON 3. Use the VALUE buttons to select the Audio Trigger Off mode. 4. Press the BYPASS button to start sampling. The display will read: SAMPLING.

This page determine the length of the sample playback. 4. Use the VALUE buttons to select the desired sample length time.
Adjusting the Sample Mix Parameters
The Mix module allows for adjusting the relative balance between the direct signal, and the recorded sample playback signal. 1. Press the MIX button. The display says: DIRECT LEVEL: 50 This page controls the level of the direct signal. 2. Press the VALUE buttons to select the desired direct signal level. The range is 0 to 99 (0 is off). 3. Press the PAGE UP button to select the next page. The display says: PREAMP LEVEL: 50 This page controls the samples output level. 4. Press the VALUE buttons to select the desired preamp signal level. The range is 0 to 99 (0 is off). 5. Press the PAGE UP button to select the next page. The display says: PLAYBACK LEVEL: 50 This page controls the samples output level. 6. Press the VALUE buttons to select the desired recorded Sample signal level. The range is 0 to 99 (0 is off).
CHAPTER 6 THE MIDI BUTTON
This Chapter describes how to set up the QuadraVerb GT for MIDI operation. The next Chapter covers how to modulate different parameters via MIDI continuous controllers. Please note that the MIDI button selects global settings that apply to all programs. Only the MIDI modulation options are stored with each program. All operations begin by pressing the MIDI button. The LED in the middle of the button will light. Use the PAGE buttons to select the following pages, and the VALUE buttons to select the parameter value for each page.

6.1 SELECT MIDI MODE

The display says: MIDI CHANNEL: OMNI There are two options. Omni In this mode, the QuadraVerb GT will respond to any data coming in from any MIDI channel. If youre using the QuadraVerb GT only with something like a MIDI Program Change Footswitch or Continuous Controller pedal, this is a hassle-free setting. If there are several devices connected to the MIDI line, you will need to assign each one to its own channel number, described next. 01-16 This selects a MIDI channel from 1 to 16. The QuadraVerb GT will respond only to information appearing on the selected channel. Example: If you want to control two independent QuadraVerb GTs from the same MIDI line, set each one to a different channel, such as 1 and 2, 5 and 10, 11 and 16, etc.
6.2 PROGRAM CHANGE ENABLE
The display says: MIDI PROGRAM CHANGE: ON There are three options. Off When off, the QuadraVerb GT will ignore any incoming program changes. On When on, the QuadraVerb GT will respond to incoming program change commands. There is a one-to-one correspondence between program change numbers and QuadraVerb GT programs (i.e., MIDI program 0 calls up QuadraVerb GT program 0, MIDI program 1 calls up QuadraVerb GT program 1, MIDI program 43 calls up QuadraVerb GT program 43, etc.). MIDI programs 100-127 will call up QuadraVerb GT programs 00-27 MIDI Weirdness Consumer Alert! Not all program changegenerating devices number their programs from 000-127; some number their programs from 001 to 128 (which would offset all program numbers by one), others group programs as banks of 8 or 16 programs, and so on. To figure out whats going on, set the QuadraVerbs MIDI Program Change parameter to on, select various programs on your program change-generating device, and see which programs are called up on the QuadraVerb GT. Table This enables a program change table (see next section) that lets you assign any QuadraVerb GT program number to any incoming program change number. Example: You can have MIDI program change 23 select QuadraVerb GT program 75. With Table selected, it is not necessary to have a one-to-one correspondence between QuadraVerb GT program numbers and incoming program change commands.

EQ Mode: 5 Band EQ Low EQ Frequency Low EQ Amplitude Low Mid EQ Frequency Low Mid EQ Bandwidth Low Mid EQ Amplitude Mid EQ Frequency Mid EQ Bandwidth Mid EQ Amplitude High Mid EQ Frequency High Mid EQ Bandwidth High Mid EQ Amplitude Hi EQ Frequency

Hi EQ Amplitude

Mid EQ Frequency Mid EQ Bandwidth Mid EQ Amplitude Hi EQ Frequency Hi EQ Amplitude
Direct Mix Level Effect Mix Level Preamp Mix Level or EQ Mix Level Pitch Mix Level Delay Mix Level Mix Mod Depth Mix Mod Speed Preamp Out Level
Configuration 5 Target Parameters
Reverb Input Mix Reverb Predelay Reverb Predelay Mix Reverb Type: Reverse 2 Reverb Reverse Time Reverb Type: All Others Reverb Decay
Reverb Diffusion Reverb Density (not available for Reverb Type: Hall 2) Reverb Low Decay Reverb Hi Decay LFO Speed LFO Depth Low EQ Frequency Low EQ Amplitude Mid EQ Frequency Mid EQ Bandwidth Mid EQ Amplitude Hi EQ Frequency Hi EQ Amplitude Direct Mix Level Effect Mix Level Preamp Mix Level or EQ Mix Level Reverb Mix Level Preamp Out Level
Configuration 6 Target Parameters
Reverb Diffusion Reverb Density (not available for Reverb Type: Hall 1) Reverb Low Decay Reverb Hi Decay Delay Type: Mono Delay Delay Time Delay Feedback Spectrum Shift Ring Output Mix Del/Rev In Mix Direct Mix Level Effect Mix Level Preamp Mix Level Ring Mix Level Delay Mix Level Reverb Mix Level Preamp Out Level Delay Type: Stereo Delay Left Delay Time/Right Delay Time L Delay Feedback/R Delay Feedback
Configuration 7 Target Parameters
Reverb Diffusion Reverb Density (not available for Reverb Type : Hall 1) Reverb Low Decay Reverb Hi Decay
Delay Type: Mono Delay Delay Time Delay Feedback Resonator Decay Direct Mix Level Effect Mix Level Mix Preamp Level Resonator Level Delay Mix Level Reverb Mix Level Preamp Out Level
Delay Type: Stereo Delay Left Delay Time/Right Delay Time L Delay Feedback/R Delay Feedback
CHAPTER 8 MIDI SUPPLEMENT
(This chapter is an abridged version of material from Power Sequencing with Master Tracks Pro/Pro 4 and The Complete Guide to the Alesis HR16 and MMT-8, copyright 1990 and 1989 respectively by AMSCO Publications, and is adapted with permission.)

8.1 MIDI BASICS

Most current electronic instruments and signal processors, including the QuadraVerb GT, contain an internal computer. Computers and music have been working together for decades, which is not surprising considering music's mathematical basis (consider frequencies, harmonics, vibrato rates, tunings, etc.). In the mid-70s, microcomputers became inexpensive enough to be built into consumer-priced musical instruments. They were used for everything from sound generation to storing parameters in memory for later recall. In 1983, the MIDI (Musical Instrument Digital Interface) specification was introduced to better exploit the computers inside these new musical instruments, primarily to insure compatibility with equipment from other manufacturers. MIDI expresses musical events (notes played, vibrato, dynamics, tempo, etc.) as a common "language" consisting of standardized digital data. This data can be understood by MIDIcompatible computers and computer-based musical instruments. Before electronics, music was expressed exclusively as written symbols. By translating musical parameters into digital data, MIDI can express not only the types of musical events written into sheet music, but other parameters as well (such as amount of pitch bend or degree of vibrato).