Audio Amplifiers
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Audio amplifiers provide audio power for the Voice Alarm System. The control panel
supports three models of audio amplifiers as listed in Table 30:
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Audio amplifiers provide the following features:
•
Built-in Supervision
Each audio amplifier contains a set of normally-open trouble
contacts that close to light an LED showing the type of trouble. Types of trouble
include: input power brownout, loss of low-level supervision tone at the input,
battery failure, audio output wiring failure (if set for four-wire looped output), and
amplifier failure. During total loss of primary AC power, all LEDs extinguish to
conserve battery power.
•
Backup
You can set up an audio amplifier as a backup amplifier for multiple
amplifiers. If an amplifier fails, the control panel automatically switches to the
backup amplifier.
•
Speaker zone selection
Set by Control-By-Event or set manually using control
switches on the VCM-4, DCM-4, or ACM-16AT modules.
Audio Amplifier Audio Power Speaker Circuits
AA-30
See
Figure 70 on page 66
30 watts – compatible with
25 Vrms speakers
up to 30 watts each
AA-100
See
Figure 71 on page 67
100 watts of 70.7 Vrms audio up to 100 watts each
AA-120
See
Figure 71 on page 67
120 watts of 25 Vrms audio up to 120 watts each
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