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2 Installation
Mount the AV-VBM and/or AV-VB enclosure in a clean, dry, vibration-free area where extreme temperatures are not
encountered. The area should be readily accessible with sufficient room to easily install, utilize and maintain the
product. Determine the number of conductors required for control and supervision to be installed. Sufficient
knockouts (4 double 1 ¾” or 7/8 [two top and two bottom] and 3 single 7/8” [top]) are provided for wiring
convenience. Select the appropriate knockout(s) and pull the required conductors into the back box, separating
power limited from non-power limited conductors – refer to the recommended cable routing diagram Section 4. All
wiring should be in accordance with National Electric Code (NEC), State and Local codes.
2.1 Mounting
The AV-VBM audio panel w/microphone and AV-VB distributed audio booster enclosures are designed for either
surface or semi-flush mounting (~ ¾ inch flange around back box).
There are five (5) mounting holes
located on the back wall of the AV-
VBM and/or AV-VB back box (see
opposite).
The top center mounting hole is
keyed for ease of mounting. Place
the back box on the wall and mark
the top center keyed mounting
hole. Drill the marked location and
partially install the mounting screw
in the wall.
Hang the cabinet on the center
mounting screw. Level the cabinet,
and mark and drill the remaining
four (4) mounting holes (two on the
top, two on the bottom).
Insert all screws and firmly tighten.
CAUTION:
If drilling while mounting the AV-VBM and/or AV-VB enclosure is going to make any metal filings or
other PC board contaminants,
remove all circuit cards from the enclosure.
To remove the circuit cards from the AV-VBM and/or AV-VB enclosure;
1. AV-AMP-80: Unplug terminal blocks containing internal wiring (AV-VBM only, unplug the 6-way ribbon
cable running from the AV-AMP-80 [PL2] to the AV-MIC microphone assembly), remove the three (3)
screws holding the AV-AMP-80 mounting plate to the enclosure, slide AV-AMP-80 mounting plate out from
under the back box mounting tabs located on the right side of the audio amplifier mounting plate (see figure
3).
2. AX-PSU-6: Remove the four (4) screws holding the AX-PSU-6 power supply charger to the enclosure (see
figure 3).
Failure to tighten screws will defeat the protection circuitry designed to protect the modules/cards from
damage due to lightning and static electricity.
