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Panel Descriptions
Front Panel
1
2
1
[OUTPUT LEVEL] knob
Adjusts the overall volume.
2
PART [1]–[4], [R] buttons
Switches to the part settings screen.
When you press these buttons while the part settings screen is
displayed, the buttons switch the parts on/off.
3
Display
Various information regarding the GM-800 is indicated here.
4
[1]–[4] knob, [SELECT] knobs
Use this to select or edit the value of the parameter that's
shown in the display.
5
[EXIT] button
Used to return to previous screens and to undo operations.
6
[WRITE] button
Press this to save the scene settings or to copy.
Rear Panel (Connecting the Equipment)
11
GK IN jack
Connect a guitar or bass equipped with the BOSS Divided
Pickup (GK-5/GK-5B) to this connector.
* Never connect anything other than the dedicated serial GK
cable
12
GK OUT jack
Use this jack to connect multiple GM-800s, or to connect to a
compatible device with a GK IN jack.
13
OUTPUT jacks
Connect these jacks to your guitar amp, PA (LINE), or
headphones (sold separately).
* Connect your headphones to the L/PHONES jack.
* If your system is mono, use only the R/MONO jack.
* If you're using headphones, don't connect anything to R/MONO
jack.
2
9
3
4
7
[MENU] button
Switches to the MENU screen.
* Hold down the [EXIT] button and press the [MENU] button to
switch the knob lock function (*) on/off.
(*) When this is ON, knob operations are disabled on the play screen.
8
PAGE [Í][Ë] buttons
Switches between pages.
9
[Ç][É] switches
Switch scenes.
10
[CTL1][CTL2] switches
These switches control the functions set for each scene.
14
MIDI (OUT/IN) connectors
These connectors transmit and receive MIDI messages to/from
connected external MIDI devices.
15
CTL3, 4/EXP1, CTL5, 6/EXP2 jacks
You can connect an expression pedal (EV-30, FV-500L, FV-500H,
or Roland EV-5: sold separately) or footswitch (FS-5U, FS-6, FS-7:
sold separately), and use it to control various functions.
Ø For details on the settings, refer to "Reference Manual" (Roland
website).
16
USB (COMPUTER) port
Use a commercially available USB 2.0 cable to connect this port
to your computer.
This port lets you use the dedicated editor software or transfer
USB MIDI and USB audio data.
* You must install the USB driver before connecting this unit to a
computer. Download the USB driver from the BOSS website. For
details, refer to Readme.htm which is included in the download.
4
5
6
7
8
10
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