User Manual
Redback® A 4275B/85B 125/250W Mixer Amplier
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Redback® A 4275C/85C 125/250W Mixer Amplier
Setup
Fig 2.5A
2.5 Installing the A 4573 optional Alert/Evac Module
The A 4573 module provides a means of adding Alert, Evacuation and chime tones to the amplier. A voice-over message
can also be recorded and played back during the evacuation tone cycle. All alert and evacuation tones comform to Aus-
tralian standard AS1607.4.
NOTE: If the Alert/Evac Tone Module (A 4573) is tted its VOX will always be enabled.
It will override inputs 2 to 6 when activated.
To install the tone generator follow these steps.
1. Remove the lid from unit
2. Unscrew the tone generator cover plate from the rear panel
3. Locate tone generator 10 way header on board (this is located at the rear of the main board)
4. Connect ribbon cable header to the 10 way header on the rear board of mixer (see g 2.5A).
5. The tone generator is held in by way of 2 screws (supplied) through the rear panel (via the same holes that the
tone generator cover plate was attached).
6. Ret lid and secure with screws.
NOTE: Tones are operated by closing contacts and remain operating whilst contacts are closed.
Fig 2.5B shows the volume controls and the triggers.
1 Voice Over Volume
Use this trimpot adjustment to change the output level of the playback message.
2 Chime Volume
Use this trimpot adjustment to change the output level of the chime volume.
3 Alert and Evacuation Volume
Use this trimpot adjustment to change the output level of the alert and evacuation tone.
4 Alert, Evacuation, chime and cancel contacts
Use these contacts to trigger the chime tones, the alert tone, the evacuation tone and to cancel any
of the tones once triggered. All tones & cancel function are operated by a closing contact to ground.
This could be triggered via building re indicator board, break glass alarm etc.
Output
Voice Chime Alert
Over & Evac
ALERT - EVACUATION MODULE
EVAC
COM
CAN
CHIME
ALERT
Triggers
Levels
Fig 2.5B
A 4573
10 Way
Header
Screw Holes