Australian Monitor. AMIS60, AMIS120 User Manual

Clever Features, Contactor Friendly

Operating Manual

AMIS60, 60w Mixer Amplifier

&

AMIS120, 120w Mixer Amplifier

Product Description

The AMIS60 and AMIS120 mixer amplifiers are designed for commercial installations. Both models
operate on 110 VAC, 60Hz or 24 VDC, and may be desk or rack mounted (rack mount kit supplied fitted).
Both amplifiers incorporate a 6 zone 70 volt line speaker zone selector with “All Call”. The AMIS60 will
deliver 60 watts into a load of 8 ohms, 25 volt or 70 volt line. The AMIS120 will deliver 120 watts into a
load of 4 or 8 ohms, 25 volt or 70 volt line. Both Models feature 4 universal mic/line inputs, a transformer
balanced, 600 ohm telephone input and an insert point for additional EQ or feedback exterminator if
required. The AMIS60/120 also feature a dual RCA tape output while a balanced, 700mV XLR output is
also provided to feed up to six power amplifiers. Other standard features include on-board Bell, Pre
Announce, Alert & Evac tones, Remote Master VCA Control & dual stage priority muting. As standard,
both models are self standing and come with rubber feet. They may be stacked to a maximum of four units
high.

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Front Panel Features

(AMIS60 shown. The AMIS120 has identical front panel features)

Microphone/Line Level Controls

The AMIS60/120 features 4 universal mic/line input controls labeled Ch 1 through to Ch 4 and should be
adjusted to provide the required level mix for each individual channel. Start with the controls set to level
‘0’ and turn the controls clockwise until the desired mix level for each channel is reached.

Bass Control

Setting this control in the centre position will give an overall flat bass response. Adjusting the bass control
in a clockwise direction will provide up to 12 dB of bass boost @ 100 Hz. Adjusting the bass control in a
counter-clockwise direction will provide up to -12 dB of bass cut @ 100 Hz. It is recommended to start
with the bass control at the centre ‘0’ position and adjust if necessary.

Treble Control

Setting this control in the centre position will give an overall flat treble response. Adjusting the treble
control in a clockwise direction will provide up to 9 dB of treble boost @ 10kHz. Adjusting the treble
control in a counter-clockwise direction will provide up to -9 dB of treble cut @ 10 kHz. It is recommended
to start with the treble control at the centre ‘0’ position and adjust if necessary.

Master Output Control

The master level pot controls the overall output level of the amplifier depending on the levels set for the
individual input channels as detailed above. Start with the control set to level ‘0’ and turn clockwise until
the desired output level of the amplifier is reached. The Master Output Control can also be operated via
remote VCA (see rear panel description)

Page Chime Enable Button

This allows the user to disable or enable the Pre-Announce Chime. This switch does not activate the chime.
Activation is accomplished via the rear panel barrier strip (normally wired to a paging microphone). If the
pre-announce chime is connected to a paging microphone (meaning that it would be activated by the switch
on the microphone), the Page Chime Enable switch on the front panel of the amplifier allows the user to
disable the chime function on those occasions when it is not require

All Call Button

When pressed, the All Call button will connect the 70 volt output of the amplifier to all 6 of the switched
outputs (if connected). Depressing this button again will disconnect the switched outputs. This switch is
“push on-push off” and is non-interlocking.

Speaker (Zone) Selector Switches

These 6 black buttons are for switching the 70 volt output of the amplifier to any combination of the 6
available speaker zones. The switches are “push on-push off” and are non-interlocking (both with each
other and with the all-call button). The maximum capacity of each speaker zone is 60 watts so care should
be taken to ensure that no individual zone is loaded down with any more than 60 watts, always
remembering that the total load for the AMIS60 is 60 watts and for the AMIS120, 120 watts in total. Eg; it
is possible on the AMIS120 to safely have one zone loaded with 60 watts and the remaining five loaded
with 12 watts each.

Power Switch

This switch controls the switching of AC power to the amplifier. Rocking this switch upwards turns ‘on’
AC power to the amplifier while rocking the switch downwards turns power ‘off’ to the amplifier. A blue
LED above the switch will indicate whether the amplifier is switched ‘on’ or ‘off’. This will not switch DC
power ‘on’ or ‘off’ in DC operation. In DC operation mode, the amplifier is always ‘on’.