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BM SERIES: INSTALLATION & OPERATION MANUAL

PAGE 5

REAR PANEL

7.  Mains Socket:

 The unit is connected to the mains circuit with a standard IEC type power lead. 

This socket contains a rated slow blow fuse. 

**NOTE: Only use a fuse equal to the marked rating

8.  Tone Generator Connections: 

There are four alarm triggers; CHIME; ALERT; BELL; EVAC. These are 

connected via the rear panel Phoenix connector. Each alarm is triggered by a (normally open) switch/
relay contact joined between the trigger and the “com” pin. 

•  A momentalry switch-closure will sound the alarm only ONCE, until it finishes playing out

 

•  A latched switch-closure will loop the alarm indefinitely, until the switch closure is removed

 

If 2 (or more) triggers are enabled, each alarm will sound just once and then stop, then the next highest 
priority alarm will sound. The “EVAC” sound is the highest priority, so if “BELL” and “EVAC” were triggered 

together, the “BELL” will sound ONCE, then the “EVAC” will continue to sound indefinitely. ANY triggered 

alarm will override (mute) the audio path of any existing audio on inputs 2-8. Channel 1 audio (which is 
the priority) is ducked a little, but still audible while the alarm(s) play out.

9.  Input 1 Mic/Line:

 This microphone input features 48V phantom power for powering Condenser 

Microphones. The Vox level pot sets the threshold of the internal Priority Mute level. Microphone 1 input 
can mute all other inputs. The input selector switch is used to choose between the Microphone or Line 
input. The Microphone input is connected to the Phoenix terminal. The line input can be connected to 
the Dual RCA inputs or to the Phoenix terminal. The Dual RCA is internally summed for mono.

10. Inputs 2-6 Mic/Line:

 The input selector switch is used to choose between the Microphone or Line input. 

The Microphone input can be connected to the Phoenix terminal. The line input can be connected to 
the Dual RCA inputs or to the Phoenix terminal. The Dual RCA is internally summed for mono.

11. Inputs 7 & 8:

 These are dual RCA inputs internally summed to Mono.

12. Main Output:

 The XLR output provides a balanced line level signal.

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