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THE FOUR LED's (Light Emitting Diodes)
Each unit output (GKA, GKB, GKC and GKD) has a two-colored LED. The colors are
RED and GREEN.
If both LED's are activated, the color will show YELLOW.
GREEN
ON
- The guitar GK VOL knob level is directed to the synth.
OFF
- A fixed voltage is directed to the synth, either MUTE or MAXVOL
(explained elsewhere)
RED
ON
- The guitar S1 and S2 buttons are directed to the synth.
OFF
- The synth will NOT react when pressing the S1/S2 buttons.
YELLOW
ON
- Both guitar GK VOL knob level is directed to the synth as well as the guitar
S1/S2 buttons.
UNDERSTANDING THE GK VOL CONCEPT
Most people use the Guitar GKVOL knob to control the output volume of the synth.
GKVOL is one of the wires in the 13-pin cable.
The voltage on this wire may affect various parameters in the synth unit, but as said,
in many cases it affects the Patch Volume. This can easily be modified in the patch
setting of the synth.
The GKPX-14 allows you to individually connect the GKVOL signal to any or several of
the connected synth units.
When this VOL connection is enabled, (indicated by the GREEN component of the
LED) the guitar GK VOL knob modifies the volume/expression of the synth(s).
However, if this VOL connection is disconnected (GREEN component of LED is OFF) ,
there can be two optional voltages feed to the synth. Either full volume (+5V) or
silence (0V)
"MUTE" corresponds to the functionality of a Roland US-20 unit (0V).
"MAXVOL" corresponds to the functionality of a Roland GKP-4 unit (+5V).
NOTE: THIS SETTING IS PROGRAMMABLE USING THE SETUP WIZARD.
FACTORY DEFAULT IS "MUTE"
GKPX-14
GK Parallel Box
4
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