Apex ASB1 User Manual
APEX ASB1 A/B or Y Switcher Box
The Facts about Signal Switching
A/B-Y switching works two ways. It lets you switch a common source signal (guitar, bass
or keyboard) between two amplifiers or amp channels. Or conversely, it lets you switch
two source signals (eg, two different guitars) into the same amplifier. A good quality A/BY switcher will also provide LEDs or other indicators to show whether A, B or Y routing
is in effect.The Y routing combines both the A and B outputs in parallel so that two
amplifiers can be driven at once.
About the APEX ASB1:
The ASB1 provides full A/B-Y switching facilities, plus parallel Common in/out jacks.
• A and B LEDs illuminate to indicate selected signal routing. Both LEDs illuminated
indicates Y routing.
• Dual footswitches permit selective A/B switching or combining both A&B as with a Y adaptor.
• Dual Common jacks permit connecting something in parallel with the input source –
perhaps a guitar tuner.
• 9-volt battery is supplied
• Dimensions: 3.75 x 2.5 x 1.5 inches (90mm x 63mm x 40mm)
• Weight: 1lb (454g)
Usage
One instrument switching between two amplifiers
a) Plug your instrument cable into one of the jacks marked Common.If you have a
guitar tuner you may connect it to the other Common jack with an extra guitar cord
or shielded patch cable.
b) Using two more shielded cables connect the A jack to the input of amp A and the B
jack to the input of amp B.
c) Depress the A/B footswitch to select amplifiers. One of the two LEDs will illuminate
to tell you which amp is selected.
d) To get both amps working at once, depress the Y footswitch.When both amps are
working, both LEDs will be on.
Two instruments being selected for one amplifier
a) Using shielded guitar cords, plug one instrument into the A jack and the other into
the B jack.
b) Using a third shielded cable, connect one of the Common jacks to the input of the amplifier.
c) Now depress the A/B footswitch to select the desired instrument. Please note that is
not generally advisable to use the Y function in this setup (i.e. to have both instruments going into the amp at once).
d) The LEDs will indicate that instrument A or B is connected to the amplifier.
www.apexelectronics.com
MO-ASB1-1v0.pdf - 01/09/02
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