24 volt dc power inlet, Speaker output terminal strip, Level control – Australian Monitor AMIS1202P User Manual

Page 3: Xlr audio input and parallel output

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power lead, please check the rear panel of the amplifier to ensure that the voltage switch is set correctly for
your part of the world.
The inlet is equipped with an in-built AC fuse holder fitted with an 4 Amp slow blow fuse plus a spare
fuse.

Please ensure that the mains power cord is disconnected before attempting to check or
replace this fuse.
Power consumption is 400 VA (max).

230V/240V Slide Switch

The operating voltage of the amplifier is user selectable between 230V and 240V via a slide switch located
on the right of the AC inlet. This switch should be set to match the AC voltage of your country


24 Volt DC Power Inlet

The AMIS1202P feature optional 24VDC power to run off a battery back-up if required. This is connected
via the rear terminal strip. The front panel Power Switch will not switch DC power ‘on’ or ‘off’ in DC
operation. In this mode the amplifier is always ‘on’.

Speaker Output Terminal Strip

Located on the top left of the rear panel are the speaker output terminal strips. A terminal strip is provided
for each of the two amplifiers. Reading from left to right, the connections per terminal strip are:

COM Common or “-” for low impedance speaker loads (4 or 8 ohms).

4

The “+” for 4 ohm speaker loads (use with common)

8

The “+” for 8 ohm speaker loads (use with common)


COM Common or “-” for 70v or 100v speaker loads (maximum load of 80 ohms at 100v)

70

The “+” for 70v line speaker loads (use with common)

100

The “+” for 100v line speaker loads (use with common)


Please ensure that the correct “Common” is used. Low impedance and 70/100v loads can be used
simultaneously but please pay careful attention to the overall speaker load. When used individually, the low
impedance load should be 4 ohms or higher while the 100v line load should not fall below 80 ohms per
amplifier. When both low impedance and 70/100v outputs are used simultaneously on the one amplifier,
ensure that neither output is loaded to maximum.

Level Control

Located next to the XLR input/output is a recessed screwdriver adjustable level control. One is provided
per amplifier channel. The level control is an input attenuation control normally used to match the amplifier
to a wide variety of input signals. In essence, the amplifier is designed to receive a 700mv input signal
however the level control can be used to increase the level for lower signals or decrease the level for higher
input signals. In normal use, the level control is used as a ‘set and forget’ master level control for the
amplifier.

XLR Audio Input and Parallel Output

The AMIS1202P includes both male and female 3 pin XLR connectors per channel. While the female is
normally used as the input to the amplifier, both XLR’s are connected in parallel so either will work. When
signal is connected to one XLR, the other XLR becomes a line level output allowing the input signal to be
distributed (split) to other amplifiers. In some projects, the same input may be looped through to multiple
amplifiers using this method. Up to 6 amplifiers can be looped together without any noticeable loss in level.
A distribution amplifier should be used when more than 6 amplifiers need to be looped.

The XLR’s are wired as follows: Pin 1: Shield. Pin 2: Hot, +, Positive. Pin 3: Cold, -, Negative

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