AUSTRALIAN MONITOR AMIS120XL Operating Manual
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AUSTRALIAN MONITOR AMIS120XL Operating Manual

Installation series 120 watt mixer amplifier
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Operating Manual
AMIS120XL, 120 Watt Mixer Amplifier
Product Description
The ACM120XL is a 120 watt mixer amplifier designed for commercial installations. It features 8
microphone/line input channels and can be used for either low impedance (4 or 8 ohm) or 25v/70v line
speaker systems. A host of unique features including multiple levels of muting, a VOX relay output,
Transformer Balanced 600 Ohm Telephone input, 24 VDC operation and VCA master level control make
the AMIS120XL a very flexible amplifier. The unit can be mounted in a standard 19" equipment rack (rack
ears supplied) or it can be located on a shelf or table.
Front Panel Features

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Summary of Contents for AUSTRALIAN MONITOR AMIS120XL

  • Page 1 Transformer Balanced 600 Ohm Telephone input, 24 VDC operation and VCA master level control make the AMIS120XL a very flexible amplifier. The unit can be mounted in a standard 19” equipment rack (rack ears supplied) or it can be located on a shelf or table.

  • Page 2: Bass Control

    (0) position. Master Control The master control sets the overall output level of the AMIS120XL. It is used in conjunction with the input level controls. When setting up levels, please ensure that proper gain structure practices are followed. In other words, it is not advisable to run the input channels at 10 and the output level at 1.

  • Page 3: Signal Led

    LED will illuminate. This LED will always be on when operating on 24VDC. Signal LED The green “Signal” LED located next to the ’On’ LED indicates that the AMIS120XL is passing audio. The signal LED is a simple method to trouble-shoot installations especially in multi-amplifier projects.

  • Page 4: Vca Control

    3 amps at 125VAC/30VDC. VCA Control An external pot (500K) can be connected to the AMIS120XL for remote control of the master level. The external pot is governed by the master level of the amplifier allowing the installer to set the volume, then lock the amplifier in a rack, leaving the user with just a master volume control that cannot go beyond the level set on the master (front panel) control.

  • Page 5: Insert Point

    RCA’s are provided to allow for easy connection to domestic or professional tape recorders. The output level of the tape output is governed by the 8 input controls of the AMIS120XL. The front panel master control does not affect the tape output. In a practical situation, this allows for “on the fly” changes to the power amplifier level (to turn the PA system up or down) without affecting the signal being recorded.

  • Page 6: Line Inputs

    To disable muting from input 3, simply move jumper JP3 towards the back of the chassis. Another feature of the muting circuit of the AMIS120XL is the ability to have inputs 1 and 2 on the same priority level. This is handy for situations where phone paging and microphone paging (for example) are of...

  • Page 7: Important Safety Information

    channels. This feature is also handy for emergency systems where signal from a pre-recorded message could be mixed with a live microphone. To set inputs 1 and 2 to the same priority level, move jumper JP4 towards the front of the chassis and remove and discard jumper J6. Please note that both jumpers (J4 moved and J6 removed) need to be adjusted for this feature to work.
  • Page 8 Australian Monitor Audio Inc is not responsible for damage to loudspeakers for any reason. 18. Do not ground any red (“hot”) terminal. Never connect a “hot” (red) output to ground or to another “hot”...

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