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3.2 AV-AMP-80 Audio Amplifier Module
The AV-AMP-80 audio amplifier module provides the digital audio capabilities (live voice communications with AV-
VBM) of the AV-VBM audio panel w/microphone and AV-VB distributed audio booster and requires 24 VDC nominal
power from the AX-PSU-6 (see figure 4).
The AV-AMP-80 contains two (2) electrically independent Class “A” or “B”, 40 Watt @ 25 Vrms, amplifiers (Audio
Notification Appliance Circuits - ANACs) [controlled together or amplifier two dedicated as a backup to amplifier
one]. Each amplifier (audio notification appliance circuit) is activated whenever one of the AV-AMP-80 trigger inputs
is activated (trigger input activation on AV-VBM is via the AV-SM switch/LED module).
In addition to providing the two (2) electrically independent amplifiers (audio notification appliance circuits), the AV-
AMP-80 has an integral two (2) programmable, flash-based, digital message/tone generator. Messages are freely
programmable and can be tailored to meet specific installation requirements.
There are three (3) trigger inputs on the AV-AMP-80 (two of these, trigger input 1 and trigger input 2, are prewired
on the AV-VBM to the AV-SM switch/LED module) for activating the audio amplifiers; trigger input 1, trigger input 2
and trigger input 3.
Trigger input 1 when activated, not only turns on both amplifiers (audio notification appliance circuits) it also
activates programmed message/tone #1 and plays this message over the audio notification appliance
circuits. Trigger input 1 has a higher priority than trigger input 2. If both trigger inputs are active at the same
time, programmed message/tone #1 will be broadcasted.
Trigger input 2 when activated plays message/tone #2 on both amplifiers (audio notification appliance
circuits).
Trigger input 3 sets the AV-VBM audio panel w/microphone and/or AV-VB distributed audio booster to
“booster mode”, this allows any external audio signal ( 25vrms) to be broadcasted out of one or both of the
AV-AMP-80 amplifiers (based on wiring). This trigger input has the highest priority, if both trigger input 1
and 2 are active during a trigger input 3 activation, amplifiers will broadcast the external audio signal. This is
how live voice communications are broadcasted through the AV-VB distributed audio booster amplifiers. By
activating trigger input 3 on the AV-AMP-80 of the AV-VB distributed audio booster, microphone
communications from an Axis
AX
integrated audio intelligent fire alarm control panel, an AV-VBM audio panel
w/microphone or a host EVAC system can be rebroadcasted out of the AV-VB distributed audio booster
amplifiers.
Designed into the AV-AMP-80 is a dedicated Form “C” trouble relay contact which transfers on any amplifier and/or
audio notification appliance circuit trouble/failure. This trouble/fault relay contact is prewired in the AV-VBM to the
AV-SM switch/LED module. In the AV-VB the trouble/fault relay contact must be monitored by the host fire alarm
control panel.
Note: The trouble relay contact, in addition to the power supply charger trouble/fault relay contact, located
on the AX-PSU-6 power supply charger, are prewired in the AV-VBM panel to the AV-SM switch/LED
module. These contacts located in both the AV-VBM and AV-VB must be monitored by the host fire alarm
control panel to maintain proper supervision of the AV-VBM audio panel w/microphone and AV-VB
distributed audio booster. If the AV-VB is utilized as a PBUS (485) amplifier trouble/fault monitoring is
accomplished by the AX-CTL base card via the PBUS (485) connection.
