Voodoo Lab Amp Selector - Manual (Page 7)

Program
To enter the Amp Selector’s programming mode, do the following:
1. Power off the unit by unplugging the cable in Input-A.
2. Press and hold button 1 while powering on by inserting the
cable into Input-A.
3. All LEDs will flash to indicate you’re now in programming mode.
Now you can select on/off or exclusive mode independently for each output. Pressing each
button will toggle the mode:
LED Off = On/off mode
LED On = Exclusive mode
To exit programming mode and return to normal operation, simply power the Amp Selector
off by removing the cable in Input-A.
Ground Problems
You should always start with all of the Amp Selector’s Grounds Lift switches in the ON
position. This means the output is grounded. If the amp is humming, the first place to
look is if there is a two or three position ground switch on the amplifier itself. Try each
position of the amp’s ground switch to find the least hum. If the amp continues to hum,
then try switching the Amp Selector Ground Lift to the OFF position. This now isolates
that output. Then try each position on the amp’s ground switch again to find the least hum.
If you are still having problems, make sure that all amplifiers are powered from the same
power source. Outlets in different parts of a room can have significantly different ground
potentials making it more difficult to find settings that are hum free.
Since ground connections in a multi-amp setup can get complicated, you may need to
experiment a bit with different combinations of settings to find one which keeps all the
amps from humming.
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