First things first:

1. Get the specifications on the alarm system alarm outputs. At this point, everyone here is spitting in the wind.

2. Mic inputs are looking for, as Hal wrote, a balanced input. It is imperative to find out what is coming out of the alarm panel to determine if the mic input of the Bogen will work properly. There are matching transformers available that can match a balanced to unbalanced as well as high/low impedance.

3. Most modern alarm systems are dirty, meaning there's a lot of digital noise on all the terminals. It could be the Bogen is picking up some residual data noise. In that case, either a shielded cable or a choke may be needed.

Rcaman

Americom, Inc.
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