Model QSM-624ET
Multi Purpose Mixer Amplifier
for use with public address systems
The QSM-624ET is a high quality P A Amplifier providing 240 watts RMS of power. This unit is used by
schools and has been designed in a 2RU chassis to meet a wide range of professional public address
applications. Sturdy construction and circuit design ensures maximum performance with long term
reliability. Provision exists on the back panel to allow for remote switching of bell, chime, alert &
evacuation tones and telephone input. QSM-624ET has “on demand” thermal fan forced cooling
through heatsink. In standard paging use mode, fan is inoperative. Backed by 2 years warranty on
parts and labour.
- 115VAC/240VAC/24DC operation
- Bell tone generator
- Pre announcement chime
- Alert tone generator
- Evac tone generator to AS1670.4
- When Alert tone activated, automatically switches to Evac Tone after 30 seconds
(if alert tone not cancelled)
- Front panel switches for bell, alert, evac.
- Rear panel connections for remote operation of pre.ann. chime, bell, alert & evac tones.
- Rear panel connection for PABX telephone paging.
- Mic 1 & tel. input have priority mute override.
- 5 XLR balanced microphone inputs
(option of Mic. or Aux. on inputs 4 — 5)
- Aux. 3 has own level control on rear panel.
- Tape out and Aux. out RCA sockets.
- LE D VU meter
- Short circuit protection
- Thermal & overload protection
- Toroidal power & output transformers
- Shelf or rack mount — rack ears included.
- Phantom power selectable on all mic. inputs
OUTPUT LEVEL
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