GAI-Tronics 12389-001 NOVA PA/GA Systems S.M.A.R.T. Modules - Manual (Page 20)

Pub. 42004-674L2H
NOVA P UBLIC A DDRESS S YSTEMS - S.M.A.R.T. M ODULES P AGE 18 of 24
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ALC Remote Module
Description
The ALC Remote Module, included in the GTC 12395-001 ALC Control Kit, is housed in a separate
enclosure in the logical subzone to be monitored.
The location of the mounting holes on the 4.0
 4.0-inch board are shown in Figure 2 below.
Figure 2. Mounting Dimensions for the ALC Remote Module PCBA
The dummy speaker or dynamic mic must be positioned close by to accurately sample the ambient noise
in the area. The remote is line-powered by the ALC Control Module, so an additional power source is
unnecessary. The wire line to the master must be of sufficient size to prevent significant resistance losses
to the phantom dc power. See the wire-size chart below.
Guideline: Total line resistance including both conductors must not exceed 20 ohms (10 ohm/wire)
Table 5. Wire Size Chart
Wire-run, Feet from
Master to Remote Recommended
Minimum Wire Size
1000 No. 20 AWG
2000 No. 16 AWG
3000 No. 14 AWG