User Manual
A75
12 Channel - Power Amplifier
TRUAUDIO’s 12-channel power amplifier is a
perfect solution for those multi-room audio
installations that require flexibility and quality sound.
With it’s smooth appearance and versatility, this
well-constructed amplifier has many features to
enhance your installation and can be customized to
fit any system.
Features include: individual input sensitivity control
for each channel, line input for each channel and
BUS 1 and BUS 2 source inputs and outputs,
bridging between channels, in and out triggers, with
a ground lift circuit. The specially designed digital
chip set will minimize unwanted heat build-up to
ensure the high quality audio reproduction and
longevity of the amplifier.
Never expose the amplifier to any kind of moisture.
This piece should NOT be used near bath tubs,
sinks,wet basements or swimming pools. Also avoid
placing this unit by heat sources such as radiators,
heat registers or stoves.
This unit should not be in direct sunlight.
Before connecting any cables to the amplifier, the
power must be OFF.
When deciding on where to place the unit, make
sure there is plenty of airflow. Do not set other
components directly on top of the amplifier. If other
components must be placed on top of this piece,
you must use some kind of spacers. If it will be
installed into a cabinet, the cabinet should have
proper airflow, adding an additional cooling fan
might be necessary.
Make sure the speakers that will be connected to
this unit can handle the output power of the
amplifier.
We suggest NOT to use any kind of extension cord
unless it is polarized and made from heavy gauge
wire. If at all possible, plug this unit directly into the
wall outlet or surge protection.
Front Panel:
Power Switch:
This is used to turn the unit on or off.
LED Indicators:
There is one LED indicator for the power and each
zone.
NOTE: If a fault occurs within a particular zone, the
LED changes to RED. If the fault remains, the
corresponding LED remains red and you must
power cycle off and on to clear the fault. If the fault
is momentary, then the zone LED changes to red
and then switches to solid blue after a few seconds.
Once all zones are cleared of faults the front LED’s
will turn blue as long as they are active.
Rear Panel:
On/Auto/Trigger Switch:
ON MODE
All zone LED lights will be off until an audio signal is
introduced to the BUS or LINE-IN inputs. When
audio signal is present, appropriate zone lights will
turn blue to indicate zone or zones are on. After 8
seconds without an audio signal the zone or zones
will turn off. Zone LED lights will remain off until
each zone senses an audio source to the zone
input.
AUTO MODE
The inputs on the amplifier will detect an audio
source and turn on when a source is present; after
Caution:
MAKE SURE TO READ THIS INSTRUCTION
MANUAL BEFORE TURNING THE POWER ON
OR HOOKING UP THIS POWER AMPLIFIER.
Description
General Information & Features
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