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Mixer Amplifier
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RCA phono socket x2 for connection of auxiliary signal sources, stereo sources are internally
summed.
7. AUX2 IN
RCA phono socket x2 for connection of auxiliary signal sources, stereo sources are internally
summed.
8. Audio source selection switch
（
AUX2-MIC2
）
Slide switch to select source to be used or apply phantom power to Mic2 input.
9. MIC2 IN
XLR socket for connection of balanced microphone.
10. MIC2 GAIN
Adjust to obtain a suitable input sensitivity.
11. FIRE ALARM IN
This port is only to be used to connect dry contact of the relay. No input voltage or ground
connection is allowed! A closing contact will mute all inputs except Mic1.
General Installation
ALWAYS
ensure that the equipment is properly earthed (grounded). Operating
without an earth is dangerous and may cause high levels of audible hum from the
speaker outputs.
NEVER
remove the top cover of the amplifier or make an internal adjustment with the
ac mains supply connected. All internal servicing should be performed by a competent
and qualified engineer.
DO NOT
expose the unit to rain or moisture. If any fluids or foreign objects should
enter the unit, disconnect the power plug immediately.
DO NOT
site the equipment in locations exposed to direct sunlight, near heaters or
other heat sources. Avoid locations with high humidity or dust levels.
DO NOT
obstruct the ventilation slots in the amplifier case and allow adequate
ventilation. (Ensure that a 1U ventilation panel is fitted above the unit if the amplifier is
rack-mounted.)
DO NOT
run microphone cables near mains, data, telephone or 100V lines.
AVOID
jointing the microphone cables if possible. If this is unavoidable, make sure a
good screen connector is used.
ALWAYS
use a balanced or floating low impedance microphone on long microphone
runs, terminating in a balanced input.
