Electrocompaniet AW180 User Manual

Page 4

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Single-ended (normal) input and operation
Upon arrival, the amplifier is set for single-ended use with a shorting plug in the negative
RCA input.This will short the negative (-) input of the amplifier to ground. With shorting
plugs in position, the amplifier is ready to be connected in a normal way with a single
ended preamplifier.

Balanced XLR input and operation
The balanced mode can only be used if the preamplifier has a balanced output. In order to
use the balanced XLR- input, turn off the amplifier, and remove the shorting plugs from
the
negative (-) RCA inputs.Use an XLR interconnect with GND on pin 1, + on pin 2 and -
on pin 3.

Balanced RCA input and operation
The balanced mode can only be used if the preamplifier has a balanced RCA output. Be
sure the amplifier is turned off. Remove the shorting plugs. Use 4 single (2 stereo)
interconnect cables from the preamplifier to each mono power amplifier, connecting + and
- outputs from the preamplifier to the + and - inputs of the corresponding channel on the
amplifier.
Make sure the + and - are not interchanged, as this will cause the system to operate out of
phase, with very poor bass response as a result.

Operating instructions:

How to turn on your system
You should always turn on your equipment in this order: Signal source devices (CD, tuner,
etc) and preamplifier are turned on first. Allow 30 seconds of preheating before you turn on
your power amplifier.When turning your system off, you should start by switching off your
power amplifier, then the preamplifier, and finally your signal source devices
After switching on the power amplifier, there will be a 5 seconds delay before the speakers
are connected. This will prevent large turn on/off transients to reach the speakers.

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