ALC2 User’s Manual. Rev. 01
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7. Operation_____________________________________________________
Inputs in parallel mode switch
The parallel switch behind the cover on the front panel toggles the amplifier between stereo and parallel mode. Use parallel mode when you want to drive both
channels with one signal, while keeping separate control of both channels’ SDP processing and gain.
Mono bridge mode switch
The bridge mode DIP-switch behind the cover on the front panel toggles the amplifier between stereo and mono bridge mode. In bridge mode, the channel 1
input feeds the entire amplifier. Gain is controlled by the channel 1 gain potentiometer. In this mode only the channel 1 SDP module can be used. You can use
standard SDP protection modules in bridge mode. The ALC2 automatically recalculates the limit thresholds to compensate for the extra gain of the amplifier.
Remember, that in bridge mode the amplifier cannot cope with loads lower than 4
Ω
.
Ground lift switch
If hum is audible, the cause may be a ground loop in your sound system. The ground lift switch ‘lifts’ the ground from your sound system from the AC mains
ground, thus ‘opening’ the ground loop.
