Audio Amplifiers 5. Voice Alarm Systems
AFP-300/AFP-400 Operations PN 50260:C1 05/22/97 35
Audio Amplifiers
Overview Audio Amplifiers provide audio power for the Voice Audio System. The control panel
supports three models of audio amplifiers as listed in Table 31:
Table 31 Audio Amplifier Models
Audio Amplifier
Features
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: brownout, loss of low-level supervision tone at the input, battery
failure, audio output wiring failure (if set for four-wire 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.
Amplifier Audio Power Speaker Circuits
AA-30
See Figure 36 on page 36
30 watts – compatible with
25 Vrms speakers.
up to 30 watts each.
AA-100
See Figure 37 on page 37
100 watts of 70.7 Vrms audio. up to 100 watts each.
AA-120
See Figure 37 on page 37
120 watts of 25 Vrms audio. up to 120 watts each.
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