GKMX-42
Guitar/Unit Selector
4
POWERING THE UNIT
The GKMX device and can be powered by either unit A or B, selecting the unit with highest
voltage. However in this mode there is a small risk that the total current could lead to
clipping/distortion or possible unit failure.
A second (safer) method is to connect a 12VDC adapter rated 0.8-1.5A with a 2.1 mm plug
(not included). In this mode there’s no current drawn from the synth unit. The adapter will
provide enough current to power the GKMX unit and any connected 13-pin guitar.
To be on the safe side, we recommend the following:
1.
IF YOU ARE CONNECTING MORE THAN TWO 13-PIN GUITARS, ALWAYS USE A
12VDC ADAPTER (rated 0.8A - 1.5A) WITH THE GKMX-42.
2.
MAKE SURE THAT THE CENTER HOLE OF THE 12VDC CONNECTOR IS 0V AND THE
SLEEVE IS +12VDC OTHERWISE PROTECTIVE COMPONENTS INSIDE THE GKMX
DEVICE MAY GET DAMAGED.
3.
IF THE LAMPS (LEDS) DO NOT IMMEDIATELY LIGHT UP WHEN CONNECTING THE
ADAPTER, REMOVE THE PLUG AND VERIFY THE VOLTAGE AND POLARITY.
Technical information:
Available supply current, Roland guitar synth:
200 mA
Loads:
Maximal GKMX internal power consumption:
40 mA
GK-3 or GK-KIT maximal power consumption/guitar: 30 mA (each)
Calculation on four connected GK-3 guitars:
40 + (4 x 30) = 160mA (i.e. less than 200mA, which is OK)
Only the GK3 pickup type has been measured. Other pickups may consume much more
power. If you don’t know the power consumption of your 13-pin guitar, you should follow
our recommendation shown above and connect a 12VDC adapter.
USING THE DEVICE WITHOUT A SYNTHESIZER
If the device is powered by a 12VDC adapter it allows you to use this device also for gigs
where you choose not to bring your guitar synthesizer. Just connect the SEND jack to a
regular guitar amplifier and play the selected GK or regular guitar.
