Operation - Xpress A100 User Manual

Class d 100w
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Operation

Once installed and setup, the A100 doesn't typically need a whole lot of attention. But just in
case you need to tweak something, here's what you'll want to do...
ON/OFF
The A100 is auto-sensing, so typically once the system is installed and setup, the power
will automatically turn ON with the presence of an audio signal on either of the L & R Line
Inputs. The amp will automatically turn OFF when no audio signal has been detected for
15 minutes.
TRIGGER - If you are using the Trigger IN, the amp will automatically turn ON when DC
voltage is applied to the Trigger jack and turn OFF when DC voltage is removed..
POWER - If however you are a major control freak and just have to have the ability to turn
the amp ON/OFF, toggle the Power ON/OFF button once to turn the amp ON/OFF.
VOLUME - Adjust the volume to the subwoofer until low frequency level has a smooth,
natural sounding transition from the left and right speakers.
PHASE - The Phase setting allows compensation for subwoofer location relative to the main
speakers. Adjust the Phase setting to the point of highest sub audio output.
RANGE: 0º to 180º.
CROSSOVER - The Crossover sets the frequency at which audio content will pass to the A100
Speaker Out. Adjust the crossover so there is a slight overlap with the low-midrange cut-
off to produce a natural sounding transition to low frequencies.
RANGE: 40Hz to 160Hz.
BOOST- Set to 0dB for normal signal. Set to 6dB for 6dB boost @ 40Hz.
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