Boss gt-8 Owner's Manual
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Boss gt-8 Owner's Manual

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Owner's Manual
Thank you, and congratulations on your choice of the BOSS GT-8
Guitar Effects Processor.
Before using this unit, carefully read the sections entitled:
• USING THE UNIT SAFELY (page 2–3)
• IMPORTANT NOTES (page 4)
These sections provide important information concerning the proper
operation of the unit.
Additionally, in order to feel assured that you have gained a good grasp of
every feature provided by your new unit, Owner's manual should be read in
its entirety. The manual should be saved and kept on hand as a convenient
reference.
■ Printing Conventions in This Manual
• Text or numerals enclosed in square brackets [ ] indicate bottons.
[WRITE]
[SYSTEM]
• EXP pedal is an abbreviation of "expression pedal."
• Reference such as (p. **) indicate pages in this manual to which you can refer.
* All product names mentioned in this document are trademarks or registered
trademarks of their respective owners.
Copyright © 2004 BOSS CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without the written
permission of BOSS CORPORATION.
WRITE button
SYSTEM button

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  • Page 1 Owner’s Manual Thank you, and congratulations on your choice of the BOSS GT-8 Guitar Effects Processor. Before using this unit, carefully read the sections entitled: • USING THE UNIT SAFELY (page 2–3) • IMPORTANT NOTES (page 4) These sections provide important information concerning the proper operation of the unit.

  • Page 2: Using The Unit Safely

    USING THE UNIT SAFELY symbol alerts the user to important instructions Used for instructions intended to alert or warnings.The specific meaning of the symbol is the user to the risk of death or severe determined by the design contained within the injury should unit...
  • Page 3 101b • In households with small children, an adult • The unit and the AC adaptor should be located so should provide supervision until the child is their location or position does not interfere with capable of following all the rules essential for the their proper ventilation.

  • Page 4: Important Notes

    IMPORTANT NOTES Repairs and Data 291a In addition to the items listed under “USING THE UNIT SAFELY” on page 2–3, please read and observe the • Please be aware that all data contained in the unit’s memory may be lost when the unit is sent for repairs. Important data should following: always be backed up in another MIDI device (e.g., a sequencer), Power Supply...

  • Page 5: Table Of Contents

    Contents USING THE UNIT SAFELY ....2 Storing Settings by Effect (User Quick Settings)..........24 IMPORTANT NOTES ......4 Copying the PREAMP/SPEAKER Settings to Another Channel ..........25 Main Features ........8 Names of Things and What They Do ..9 Chapter 4 Introduction to Effects and Parameters ..26 Front Panel ..............
  • Page 6 Setting the Knob Functions (Knob Mode) .... 74 EXP Pedal Switch, and EXP Pedal (Assign CTL/EXP) .. 56 Switching Settings with the Number Pedals ..74 Setting the Operation of the GT-8 and External Controllers (Assign Variable) ..57 Using the Digital Outs..........75 Quick Settings .............57...
  • Page 7 85 Changing patch numbers on an external MIDI device from the GT-8.....85 Changing patch numbers on the GT-8 using the bank select messages sent from an external MIDI device ..86 Appendices ........87 About MIDI ............... 87 How MIDI messages are transmitted and received ..............87...

  • Page 8: Main Features

    The unit includes an external loop feature, which allows you to connect external effects devices. You can freely set the order in which the GT-8’s effects are connected as well as the send and return levels. The GT-8 is also equipped with an amp control jack, enabling you to use the GT-8 to switch preamp channels on the connected device.

  • Page 9: Names Of Things And What They Do

    12 13 14 15 TYPE VARIATION Button Display Switches the type variation. A variety of information about the GT-8 appears here. The left display shows the bank number. CHANNEL Button This switches between preamp Channels A and B. PATCH LEVEL Knob...
  • Page 10 Names of Things and What They Do fig.002-010 10 11 19 20 21 22 23 24 12 13 14 15 DELAY EQ (Equalizer) FEEDBACK Knob EQ ON/OFF Button Adjusts the number of times the delay is repeated. Press when changing the settings. LEVEL Knob 10.
  • Page 11 With items for which there child is capable of following all the rules essential for aren’t that many parameters, the GT-8 jumps to the last (or initial) parameter. the safe operation of the unit.

  • Page 12: Rear Panel

    Names of Things and What They Do Rear Panel fig.002-020 INPUT Jack The guitar is connected here. OUTPUT LEVEL Knob Adjusts the volume level of the output from the output and headphone jacks. OUTPUT R/L (MONO) Jacks Connect to your amp, mixer, or such device. PHONES Jack Connect headphones here.

  • Page 13: Chapter 1 Playing Sounds

    Chapter 1 Playing Sounds Making the Connections fig.01-010 Stereo External Effects Headphones MIDI Sequencer etc. INPUT OUTPUT Guitar AC Adaptor (BRC series) Digital Recorder etc. Expression Pedal (Roland EV-5 etc.) Guitar Amp Foot Switch (FS-6 etc.) * To prevent malfunction and/or damage to speakers or other * When using the unit with an expression pedal connected to the devices, always turn down the volume, and turn off the power SUB EXP PEDAL/SUB CTL 1, 2 jack, set Minimum Volume...

  • Page 14: Turning On The Power

    1. Before turning on the power, confirm the following. • Are all external devices properly connected? • Is the volume on the GT-8, your amp, and all other connected devices turned down to the minimum level? 2. Switch ON the POWER switch on the GT-8’s rear panel.

  • Page 15: Turning Off The Power

    Turning Off the Power 1. Before turning off the power, confirm the following. • Is the volume on the GT-8, your amp, and all other connected devices turned down to the minimum level? 2. Turn off the power to any external effects processors, then to the guitar amp (power amp) and other devices.

  • Page 16: Creating Your Own Favorite Tones (Patches)

    What is a Patch? How to Switch Patches (Patch Change) The GT-8 can store 340 combinations (or “sets”) of effects and parameter settings. Each of these sets is called a “patch,” Patches are switched by selecting a “bank” (1–85) and with patches organized by bank and number as shown “number”...

  • Page 17: Switching The Bank And Number

    If the Patch Does Not Switch LEVEL level. The volume increases as the knob is turned to the right. On the GT-8, you cannot switch patches in any screen other DELAY than the Play screen. Press [EXIT] to return to the Play screen (p. 14).

  • Page 18: Turning The Effect On And Off

    Turning the Effect On and Off Setting the Effects Simply (QUICK FX) The GT-8’s internal effects are switched on and off with button controls. The indicator for an effect’s ON/OFF button Each effect includes prepared sample settings called “Quick lights up when the effect is enabled.

  • Page 19: Calling Up Existing Patch Settings

    Chapter 2 Creating Your Own Favorite Tones (Patches) Calling Up Existing Patch Settings 4. Press [EXIT] to return to the Play screen. 5. If you want to save a tone with the settings you’ve Just as with the Quick Settings, you can call up and use only made, proceed as described in “Storing Patches (Patch the specific effect settings you need from the User and Preset Write)”...

  • Page 20: Making More Precise Effect Settings

    ] (or [ ]). With items for which * Use [MASTER] to set the Noise Suppressor, use ASSIGN there aren’t that many parameters, the GT-8 jumps to the [CTL/EXP] to set the Foot Volume, and use [OUTPUT last (or first) parameter.

  • Page 21: Naming Patches (Patch Name)

    Chapter 2 Creating Your Own Favorite Tones (Patches) Naming Patches (Patch Name) Each patch can be given a name (Patch Name) consisting of up to sixteen characters. You’ll probably want to take advantage of this feature by assigning names that suggest the sound you’ll obtain, or the song in which it’ll be used.

  • Page 22: Saving The Tones You Have Created

    * This step is unnecessary if the current User patch is 4. Press [WRITE]. acceptable. The GT-8 switches to the copy-destination patch, and * To cancel the Write procedure, press [EXIT]. The Play screen you’re returned to the Play screen.

  • Page 23: Exchanging Patches (Patch Exchange)

    You can return (initialize) the User patches to their original standard settings. On the GT-8, you can “swap” or exchange the positions of This is convenient when you want to create a new patch from two User patches. The following explains how this is done.

  • Page 24: Initializing Patches With A Tone Similar To What You Have In Mind

    Chapter 3 Saving the Tones You Have Created Initializing Patches with a Tone 7. Press [WRITE]. The GT-8 switches to the initialized patch, and the Play Similar to What You Have in Mind screen returns to the display. * The tones stored in patches are lost once the initialization is If you already have a clear idea about the kind of sound you executed.

  • Page 25: Copying The Preamp/Speaker Settings To Another Channel

    Chapter 3 Saving the Tones You Have Created Copying the PREAMP/SPEAKER In case of Assign 1–8 (p. 57) Press ASSIGN [VARIABLE] several times in order to Settings to Another Channel select the Assign Variable number you wish to save the settings.

  • Page 26: Introduction To Effects And Parameters

    Chapter 4 Introduction to Effects and Parameters PREAMP/SPEAKER (Preamp/ In this chapter you will find detailed descriptions for each of the GT-8’s onboard effects, and the parameters used to Speaker Simulator) control them. COSM technology plays an indispensable role in simulating The sound being input to each effect is called the “direct...
  • Page 27 Chapter 4 Introduction to Effects and Parameters Parameter/ Parameter/ Explanation Explanation Range Range Type *1 This is an optimal speaker cabinet for a large 4X10” enclosed amp with four 10-inch speakers. refer to Type List This sets the type of the guitar preamp. This is an optimal speaker cabinet for a large Gain *1 4X12”...
  • Page 28 Chapter 4 Introduction to Effects and Parameters Type List Type Explanation R-FIER Type Explanation Models the sound of the Channel 1 CLEAN JC CLEAN R-FIER Cln Mode on the MESA/Boogie DUAL Rectifi- JC-120 This is the sound of the Roland JC-120. Models the sound of the Channel 2 RAW Warm Clean This gives a mellow, clean sound.

  • Page 29: Overdrive/Distortion

    This is a booster that works very well with Booster COSM amps. CUSTOM Blues OD This is a crunch sound of the BOSS BD-2. Custom1 Custom OD/DS 1 A lustrous crunch sound with an added ele- Custom2 Custom OD/DS 2 Crunch ment of amp distortion.

  • Page 30: Delay

    Chapter 4 Introduction to Effects and Parameters DELAY Parameter/ Explanation Range Warp This effect adds delayed sound to the direct sound, giving This simultaneously controls the delay sound’s feedback level and more body to the sound or creating special effects. volume to produce a totally unreal delay.

  • Page 31: Using The Hold (Hold Delay)

    Chapter 4 Introduction to Effects and Parameters Using the HOLD (Hold Delay) Parameter/ Explanation Range * When set to BPM, the value of each parameter will be set according to 1. Press DELAY ON/OFF button, then press the value of the Master BPM (p. 51) specified for each patch. This makes PARAMETER [ ] so that “Type”...

  • Page 32: Chorus

    This is a stereo chorus effect that adds different chorus sounds to L Switch, and EXP Pedal (Assign CTL/EXP)” (p. 56) and R. • “Setting the Operation of the GT-8 and External Stereo2 Controllers (Assign Variable)” (p. 57) This is a stereo chorus effect produced by synthesizing the spatial characteristics of the direct sound and the effect sound.

  • Page 33: Reverb

    Chapter 4 Introduction to Effects and Parameters REVERB COMP (Compressor) This effect adds reverberation to the sound. This is an effect that produces a long sustain by evening out the volume level of the input signal. You can switch it to a Parameter/ “limiter”...

  • Page 34: Wah

    Chapter 4 Introduction to Effects and Parameters FX-1/FX-2 “Wah” lets you use an EXP pedal or the like to obtain real- With FX-1 and FX-2, you can select the effect to be used from time control of the wah effect. the following.

  • Page 35: Acs (Advanced Compressor)

    This models a dbx 160X. see below Selects the compressor type. Vtg Rack U This models a UREI 1178. BOSS Comp This models a BOSS CS-3. Attack This is a compressor that adds an even Adjusts the strength of the picking attack Hi-BAND 0–100 stronger effect in the high end.

  • Page 36: Aw (Auto Wah)

    Chapter 4 Introduction to Effects and Parameters TM (Tone Modify) Parameter/ Explanation Range This changes the tone of the connected guitar. Frequency Adjusts the center frequency of the Wah ef- 0–100 Parameter/ fect. Explanation Range Peak Type Adjusts the way in which the wah effect ap- see below Selects the type of tone modification.

  • Page 37: Tr (Tremolo)

    Chapter 4 Introduction to Effects and Parameters PH (Phaser) Parameter/ Explanation Range By adding varied-phase portions to the direct sound, the phaser effect gives a whooshing, swirling character to the Adjusts the tone for the low frequency -50–+50 sound. range. High Parameter/ Explanation...

  • Page 38: Fl (Flanger)

    Chapter 4 Introduction to Effects and Parameters FL (Flanger) The flanging effect gives a twisting, jet-airplane-like With the volume level of the left and right sides alternately character to the sound. changing, when playing sound in stereo, you can get an effect that makes the guitar sound appear to fly back and Parameter/ forth between the speakers.

  • Page 39: Uv (Uni-V)

    Chapter 4 Introduction to Effects and Parameters UV (Uni-V) SG (Slow Gear) Although this resembles a phaser effect, it also provides a This produces a volume-swell effect (“violin-like” sound). unique undulation that you can’t get with a regular phaser. Parameter/ Explanation Range Parameter/...

  • Page 40: Str (Sitar Simulator)

    Chapter 4 Introduction to Effects and Parameters STR (Sitar Simulator) FB (Feedbacker) This simulates the sound of the sitar. This allows you to use feedback playing techniques. * Note that the notes you want to apply feedback to must be Parameter/ played singly and cleanly.

  • Page 41: Afb (Anti-Feedback)

    Chapter 4 Introduction to Effects and Parameters AFB (Anti-feedback) Parameter/ Explanation Range This prevents the acoustic feedback that can be produced by * When set to BPM, the value of each parameter will be set according to the body resonances of a guitar. the value of the Master BPM (p.

  • Page 42: Wsy (Wave Synth)

    Chapter 4 Introduction to Effects and Parameters WSY (Wave Synth) SEQ (Sub Equalizer) This is a synth sound that processes the guitar input signal. This adjusts the tone as a sub equalizer. A parametric type is adopted for the high-middle and low-middle range. Parameter/ Explanation Range...

  • Page 43: Hr (Harmonist)

    Chapter 4 Introduction to Effects and Parameters FX-2 Parameter/ Explanation Range Pre Delay *1 You can use the following effects in FX-2 in addition to whatever effect is shared by FX-1 and FX-2. Adjusts the time from when the direct 0 ms–300 ms, sound is heard until the harmonist sounds are heard.

  • Page 44: Creating Harmonist Scales (User Scale)

    Sets the note name of the input sound. You can also play -50–+50 Make fine adjustments to the pitch shift. individual notes on the guitar and let the GT-8 interpret The amount of the change in the Fine “100” is equivalent to that of the note name.

  • Page 45: Pb (Pedal Bend)

    Chapter 4 Introduction to Effects and Parameters PB (Pedal Bend) RT (Rotary) This lets you use the pedal to get a pitch bend effect. This produces an effect like the sound of a rotary speaker. The EXP pedal automatically switches to the pedal bend Parameter/ function when PB is selected.

  • Page 46: 2Ce (2 X 2 Chorus)

    Chapter 4 Introduction to Effects and Parameters 2CE (2 x 2 Chorus) AR (Auto Riff) Two separate stereo chorus units are used for the low- This allows you to automatically produce a phrase simply by frequency and high-frequency ranges in order to create a picking a single note.

  • Page 47: Creating Original Phrases (User Phrase)

    Sets the note name of the input sound. You can also play tar sound, then send the square waveform ( ) from the inter- individual notes on the guitar and let the GT-8 judge the nal sound generator. note name.

  • Page 48: Ac (Acoustic Processor)

    Chapter 4 Introduction to Effects and Parameters Parameter/ Parameter/ Explanation Explanation Range Range PWM Depth (Pulse Wise Modulation Depth) *2 Synth Level 0–100 Adjusts the depth of the PWM. Adjusts the volume of the synthesizer 0–100 sound. When it is set to “0,” no PWM effect is obtained. Direct Level Cutoff Frequency 0–100...

  • Page 49: Sh (Sound Hold)

    Chapter 4 Introduction to Effects and Parameters SH (Sound Hold) EQ (Equalizer) You can have sound played on the guitar be held Adjusts the tonal quality. A parametric type equalizer is used continuously. This effect allows you to perform the melody for the upper and lower midrange.

  • Page 50: Loop (External Effects Loop)

    This allows you to connect an external effects device to the By connecting your guitar amp’s channel switching jack to SEND and RETURN jacks and use it as part of the GT-8’s the GT-8’s AMP CONTROL jack, you can then use [AMP effects.

  • Page 51: Master

    Chapter 4 Introduction to Effects and Parameters MASTER Patch Level The following parameters can be set with MASTER. Parameter/ Explanation • NS (Noise Suppressor) Range Patch Level • Patch Level 0–200 Adjusts the volume of the patch. • Master BPM •...

  • Page 52: Fx Chain (Effect Chain)

    This setting is used for controlling multiple effects with the CTL pedal and EXP pedal or when controlling effects using MIDI messages or other external messages. For more detailed information, refer to “Setting the Operation of the GT-8 and External Controllers (Assign Variable)” (p. 57).

  • Page 53: Using Pedals To Control The Effects

    “Setting the Operation of the CTL Pedal, EXP Pedal Switch, devices, or other gear connected to the GT-8. and EXP Pedal (Assign CTL/EXP)” (p. 56) On top of all this, the GT-8 features an “internal pedal system,” which lets you produce effects including automatic Setting GT-8 and External Controller...

  • Page 54: Setting The Operation Of The Ctl Pedal (Ctl Pedal Function)

    Used for tap input of the delay time. This applies the functions of the CTL pedal and EXP pedal Controls the Start/Stop of external MIDI de- MIDI Start/Stop switch globally to the GT-8. vices (such as sequencers). fig.05-009 Controls the Play/Stop of external MIDI de- MMC Play/Stop vices (such as hard disk recorders).

  • Page 55: Setting The Operation Of External Foot Switches (Sub Ctl 1, 2 Function)

    Chapter 5 Using Pedals to Control the Effects 1. Press [SYSTEM], then press PARAMETER [ Value Explanation ] so that “SubCTL1 Func” or “SubCTL2 Func” is The pedal normally is used as a “foot vol- displayed. ume” pedal. When Pedal Wah (p. 34) or fig.05-030d Auto Pedal Bend (p.

  • Page 56: Setting The Operation Of An External Exp Pedal (Sub Exp Pedal Function)

    Chapter 5 Using Pedals to Control the Effects Setting the Operation of an External Setting the Operation of the CTL Pedal, EXP EXP Pedal (Sub EXP Pedal Function) Pedal Switch, and EXP Pedal (Assign CTL/EXP) This sets the function of the external expression pedal (such Set the functions of the CTL pedal, EXP pedal switch, and as an EV-5) connected to the SUB EXP PEDAL/SUB CTL1,2 EXP pedal with “Assign CTL/EXP.”...

  • Page 57: Setting The Operation Of The Gt-8 And External Controllers (Assign Variable)

    Explanation Range On/Off This sets the functions of the GT-8’s controllers (the CTL and Press ASSIGN [CTL/EXP] to switch the CTL Pedal/EXP Pedal EXP pedal and the EXP pedal switch) and external Switch setting on and off. When this is switched off, “CTL PDL” and controllers (foot switches or expression pedals) connected to “EXP PDL”...

  • Page 58: Manual Settings

    Chapter 5 Using Pedals to Control the Effects Manual Settings 4. Turn the PATCH/VALUE dial to select the Quick Settings. Here, you can individually determine which controller is to control which parameter. Display Explanation fig.05-099 Quick ASSIGN Current Setting - - -: User Setting Quick ASSIGN User Quick Setting (p.
  • Page 59 8. Press [EXIT] to return to the Play screen. within the range defined by “Min” and “Max,” as set on the 9. To save the settings, use the Write procedure (p. 22). GT-8. When using an external foot switch, or other controller that Target acts as an on/off switch, “Min”...
  • Page 60 Chapter 5 Using Pedals to Control the Effects When controlling the On/Off target with the Setting Assign Input Sens EXP pedal: * This determines the global settings for Assign 1–8. fig.05-150 1. Press PARAMETER [ ] so that “Assign Input Sens” is displayed.

  • Page 61: Internal Pedal System

    This is activated when the CTL pedal on the GT-8 is depressed. value EXP SW This is activated when the EXP pedal switch on the GT-8 is turned * When using a foot switch or other on/off switching controller as the source, leave these at “Lo: 0” and “Hi: 127.” With SUB EXP PEDAL certain settings, the value may not change.

  • Page 62: Wave Pedal

    Chapter 5 Using Pedals to Control the Effects Wave Pedal Parameter/ Explanation Range This changes the parameter selected as a target in a certain Time cycle with the assumed EXP pedal. When you have set “Wave Pedal” for “Source,” the following parameters should fig.05-220d be set.

  • Page 63: Creating Original Effects Types (Customize)

    Chapter 6 Creating Original Effects Types (Customize) With the GT-8’s Customize function, you can rely on your Parameter/ own sensibilities and create a totally new effect by tweaking Explanation Range the settings for the “Preamp/Speaker Simulator,” Type “Overdrive/Distortion,” and “Pedal Wah.” The result can fig.06-020d...

  • Page 64: Customizing The Speakers

    Chapter 6 Creating Original Effects Types (Customize) Parameter/ Explanation Parameter/ Range Explanation Range Preamp High Speaker Size fig.06-026d fig.06-040d Adjusts the preamp section’s high-frequen- -50–+50 5”–15” Selects the size of speaker. cy tone. Color Low fig.06-044d Customizing the Speakers You can make two different sets of settings, Custom 1 and Custom 2.

  • Page 65: Customizing Overdrive/Distortion

    Selects the basic type of overdrive/distor- see below tion. OD-1 This is the sound of the BOSS OD-1. OD-2 This is a overdrive sound with high gain. CRUNCH This is a crunch sound. This gives a basic, traditional distortion DS-1 sound.

  • Page 66: Customizing Pedal Wah

    Chapter 6 Creating Original Effects Types (Customize) Customizing Pedal Wah Parameter/ Explanation Range You can make three different sets of settings, Custom 1, Type Custom 2, and Custom 3. fig.06-080d The sound of any patch that uses Custom 1, 2, or 3 will be altered if the custom settings are edited.

  • Page 67: Chapter 7 Other Features

    As the guitar volume changes during the performance, Dynamic Sens is adjusted in response to the volume The GT-8 includes a function to control effect parameters when the preamps are switched. with the guitar dynamics as the instrument is played. This is 5.

  • Page 68: Adjusting The Overall Sound To Match The Usage Environment (Global)

    5. Rotate the PATCH/VALUE dial to select “Input Level.” fig.07-0561d the Usage Environment (Global) The GT-8 includes a feature that allows you to change the overall tone temporarily. This is called the “Global function.” 6. Press PARAMETER [ ] to display “Input With the Global function, you can temporarily change your Sens.”...

  • Page 69: Global Eq

    Chapter 7 Other Features Global EQ Total REVERB This adjusts the tone regardless of the equalizer on/off This has no effect on patches in which reverb is turned off. settings of individual patches. Parameter/ Explanation Range Parameter/ Explanation Range Rev Level Low EQ fig.07-046d fig.07-042d...

  • Page 70: Adjusting The Display Contrast (Lcd Contrast)

    Contrast (LCD Contrast) the Guitar Being Used Depending on where the GT-8 is placed, the display (on the The GT-8 includes a function used for adjusting the tone to right) may become difficult to read. If this occurs, adjust the match the connected guitar.

  • Page 71: Keeping Effect Sounds Playing After Patches Are Switched (Patch Change Mode)

    All Patches (Preamp Mode) The GT-8 features a mode that is enabled when spatial effects With the GT-8, you can have a preamp be set globally for use (such as reverb and delay) are used, whereby the effects in all patches.

  • Page 72: Limiting The Banks That Can Be Switched (Bank Extent)

    By setting an upper limit to the banks, thus limiting the range This sets the timing with which the GT-8 switches to the next of banks that can be switched, you can set the GT-8 so that patch when switching patches with the pedals.

  • Page 73: Changing The Exp Pedal Mode When Patches Are Switched (Exp Pedal Hold)

    If the expression pedal is operated, and that information is transmitted to the GT-8, the volume will change in accord with the pedal’s movement. 3. Press [EXIT] to return to the Play screen.

  • Page 74: Setting The Knob Functions (Knob Mode)

    (Knob Mode) Number Pedals This sets the way the values of settings are changed when the The GT-8 includes a function that allows you to turn the control knobs are turned. tuner on and off, switch preamp channels, and perform other tasks by pressing the pedal with the same number as the fig.07-201...

  • Page 75: Using The Digital Outs

    * You can check the level of signals being input to the INPUT jack by selecting “Input.” Selecting “Output” allows you to check the level of signals output from the GT-8. * You may not be able to achieve the effects you envision if your output levels are set too high.

  • Page 76: Tuning The Guitar

    Chapter 7 Other Features Tuning the Guitar How to Tune When the Tuner is turned on, sounds input to the GT-8 are 1. Play a single open note on the string being tuned. output directly as is (bypassed), and the tuner is activated.
  • Page 77 Mute Sounds are muted, and no sound is output. Bypass Sounds input to the GT-8 bypass the processing and are output di- rectly as is. When this is set to “Bypass,” and Tuner is set to ON, you can adjust the volume of the direct sound by operating the expression pedal.

  • Page 78: Turning The Effects On And Off With The Pedals (Manual Mode)

    On and Off With the Pedals with the Pedals (Manual Mode) fig.07-020 The GT-8 features a Manual mode, in which the pedals are used for switching specified effects on and off. In Manual mode, you can switch effects on and off without changing the patch number.

  • Page 79: Using The Gt-8 With External Midi Devices Connected

    MIDI device, its patches are simultaneously connected devices match. If the MIDI channel settings are not switched. correct, the GT-8 will be unable to exchange data with other MIDI devices. You can set up the correspondence between MIDI Program Operating From the GT-8 Change messages and the GT-8’s patches using the Program...

  • Page 80: Making The Settings For Midi Functions

    Explanation Range Functions MIDI TX Channel (MIDI Transmit Channel) fig.08-050d Here is a description of the GT-8’s MIDI functions. Set them as needed, depending on the intended use. fig.08-021 This sets the MIDI Transmit channel used 1–16, Rx for transmitting MIDI messages.

  • Page 81: Transmitting And Receiving Midi Data

    Explanation Range MIDI Data * On the GT-8, Bank Select messages are output simultaneously with Program Change messages. For more details, reefer to p. 85. On the GT-8, you can use Exclusive messages to provide MIDI EXP OUT (MIDI EXP Pedal Out) another GT-8 with identical settings, and save effect settings fig.08-090d...

  • Page 82: Receiving Data

    Making the Connections MIDI IN When Receiving Data Saved on a MIDI Sequencer Connect as shown below. Set the GT-8’s Device ID to the MIDI OUT same number that was used when the data was transmitted to the MIDI sequencer.

  • Page 83: Setting The Program Change Map

    Program Change messages 2. Transmit the data from the external MIDI device. received by the GT-8 and the patches to be switched to in the The following appears in the display when the GT-8 “Program Change Map.”...

  • Page 84: Enabling/Disabling The Program Change Map Settings (Midi Map Select)

    Chapter 8 Using the GT-8 with External MIDI Devices Connected 5. Repeat Step 4 as needed, setting patch numbers to their corresponding Program numbers, until the Program Change Map is completed. 6. Press [EXIT] to return to the Play screen.

  • Page 85: Changing Patches Using Bank Select Messages

    Changing patch numbers on an external MIDI device from the GT-8 When a patch is selected on the GT-8, the bank select and program change messages sent from the GT-8 correspond with each other as shown below.

  • Page 86: Changing Patch Numbers On The Gt-8 Using The Bank Select Messages Sent From An External Midi Device

    MIDI device To change patch numbers on the GT-8 using bank select messages sent from an external MIDI device, check how the external bank select and program change messages correspond with the patch numbers on the GT-8.

  • Page 87: Appendices

    MIDI IN. aspect of the sound will be affected by control change * The GT-8 features both “MIDI IN” and “MIDI OUT” connectors. messages of a given controller number. MIDI channels The specified parameters can be controlled with the GT-8.

  • Page 88: About The Midi Implementation

    ● The memory backup battery inside the GT-8 has run exchange. Since the charts are always of a uniform size, you down. (This message will appear when the power is can simply place the two charts side by side.

  • Page 89: Troubleshooting

    If this does not → On the GT-8, patches can be selected only when the Play resolve the problem, then contact your dealer or a nearby screen is displayed. Press [EXIT] to return to the Play Roland service station.

  • Page 90: Restoring The Factory Settings (Factory Reset)

    Restoring the Factory List of Factory Settings Settings (Factory Reset) Parameter Value TUNER Restoring the GT-8 to the settings made at the factory is Tuner Pitch A= 440Hz referred to as “Factory Reset.” Tuner Out Bypass Not only can you return all of the settings to the values in...

  • Page 91: Adjusting The Exp Pedal

    4. Rotate the PATCH/VALUE dial to adjust the threshold. Setting a lower value causes the EXP pedal switch to be Although the GT-8’s EXP pedal has been set for optimum activated even when it is pressed lightly. When set to a...

  • Page 92: Midi Implementation Chart

    Appendices MIDI Implementation Chart GUITAR EFFECTS PROCESSOR Date: Oct. 22, 2004 MIDI Implementation Chart Model GT-8 Version: 1.00 Transmitted Recognized Remarks Function... Default Basic 1–16 1–16 Memorized Channel Changed 1–16 1–16 Default OMNI ON/OFF Memorized Mode Messages Altered ************** Note...

  • Page 93: Specifications

    Appendices Specifications CHANNEL button SOLO button SPEAKER button GT-8: Guitar Effects Processor (OVERDRIVE/DISTORTION) TYPE knob AD Conversion DRIVE knob 24 bit + AF method LEVEL knob DA Conversion On/Off button 24 bit TYPE VARIATION button (DELAY) Sampling Frequency FEEDBACK knob 44.1 kHz...
  • Page 94 16 characters, 2 lines (backlit LCD) 2 characters, 7 segment LED AF Method (Adaptive Focus method) Connectors This is a proprietary method from Roland & BOSS that INPUT jack vastly improves the signal-to-noise (S/N) ratio of the A/ OUTPUT jacks L (MONO)/R D and D/A converters.

  • Page 95: Index

    Index Numerics Connection ..............13 Contrast ................70 2 x 2 Chorus ..............46 Control Change ..........79, 85, 87 2CE .................. 46 Copy ................22 COSM ................8 CTL .................. 11 AC ..................48 CTL Pedal ..............54, 79 AC Adaptor ..............
  • Page 96 Index FEEDBACK .............. 10, 17 LOOP ................. 10, 50 Feedbacker ..............40 FL ..................38 Flanger ................38 MANUAL ..............11, 78 Foot Switch ............... 14, 59 Manual Mode ..............78 Foot Volume ............. 20, 51 Manual Setting ............... 58 Fretless Guitar ..............
  • Page 97 Index Patch Change ..............16 Patch Change Mode ............71 SDD ................. 49 Patch Copy ..............22 SEND ................. 12, 50 Patch Exchange .............. 23 SEQ .................. 42 PATCH LEVEL ............ 9, 17, 51 SG ..................39 Patch Name .............. 21, 52 SH ..................
  • Page 98 Index User Patch ............16, 22–23 User Phrase ..............47 User Quick Setting ............24 User Scale ............... 44 UV ..................39 VARIABLE ........... 11, 52, 58, 67 VB ..................38 Vibrato ................38 Volume ................13 Volume-swell Effect ............39 WAH ..............
  • Page 99 For the U.K. IMPORTANT: THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE. BLUE: NEUTRAL BROWN: LIVE As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows: The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.
  • Page 100 G6047002 ‘04-10-1...

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