Valcom PagePac Plus AmpliCenter Series Installation And Use Manual page 6

Installation Steps - Continued
VALCOM
1. Adjust LOW FREQ Cut Off : This control cuts out the low frequency bass so that horns and small speakers are not
over-driven and distorted by excessive bass energy. Cut off frequency is continuously adjustable from 50Hz (Full
CCW rotation) to 400Hz (Full CW rotation).
2. Adjust PAGE VOX: (Voice activation) Sensitivity is turned fully counter-clockwise. Adjust Page Vox clockwise for
audio source without contact closure pair if the Dry Loop feature is not used, when using Page Port with contact
closure, loop or ground start.
3. Adjust INPUT LEVEL (Music): Clockwise rotation will increase the level. Listen and set to a comfortable level.
4. Test Page: Using a telephone from the host system, dial the paging access code. Speak into the telephone in a
normal manner. Your voice should be heard from all connected speakers. The AmpliCenter Page input has an
automatic level control (ALC) which keeps loud voices and normal voices output at the same level. Beware of paging
from a telephone directly under a loudspeaker, feedback howl can occur. (A PagePac V-5335611 Feedback Elimina-
tor will resolve this problem).
5. Adjust CAL: (Page volume calibration) from the full CW (Clockwise) position to a desirable level if clipping is audible.
6. Readjust INPUT LEVEL: Adjust music input level to the desired loudness relative to paging loudness.
7. Some loudspeaker taps may have to be readjusted to get even coverage at all locations. Be sure that the final
speaker tap setting totals do not exceed the power rating of the AmpliCenter.
8. Adjust DUCKING (Music): This must be done while page is in progress. This feature allows music to continue to be
heard during a page, but at a reduced level. The range is from less than –40dB (full CCW) to –6dB (full CW). If
music input is not connected, set to full CCW.
Note: If no page is heard, refer to the troubleshooting guidelines.
Note: Do not use extension cords or plug into locally, "safety-fused" outlets.
Figure 9. Test Page Adjustments
Figure 8. Power Cable
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