Fig. 19 Auxiliary Control/Status Board Potentiometer Locations - Whelen Engineering Company WPS-2900 Series Installation Manual

There are three potentiometers for audio level adjustments on the AUXCS board. Refer to
the diagram below for the location of these potentiometers.
The potentiometers are factory set for typical signal levels, however, some adjustment may
be necessary depending on the actual audio source in the field.
The upper most potentiometer has been calibrated at the factory for a minimum clipping
level. THIS POTENTIOMETER SHOULD NOT BE ADJUSTED! The Receive Audio and/
or the Local Audio potentiometers are adjusted until the clipping indicator LED just starts
to flicker on. The Local Audio potentiometer is the one toward the rear of the cabinet, while
the Receive Audio potentiometer is the one toward the front of the cabinet.
NOTE: The front panel MIC VOLUME control should be set full volume (clockwise) if the
AUXCS option is being used.
Fig. 19: Auxiliary Control/Status Potentiometer Locations
CLIPPING
INDICATOR
LED
20K
DO
NOT J2
ADJUST!
1K 1K
LOCAL
AUDIO
RECEIVE
POTENTIOMETER
AUDIO
POTENTIOMETER
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