AUSTRALIAN MONITOR AMIS 120 User manual

Description
The AMIS120 is a 4 channel, 120 watt mixer amplifier suitable for rack or
desk mounting. The amplifier is a self contained compact unit of solid
steel construction.
Inputs
The AMIS120 has four universal input channels with separate level
controls. Each channel will accept balanced or unbalanced microphone,
line and auxiliary inputs. The unit has industry standard XLR microphone
sockets and dual RCA auxiliary sockets for each channel. An
electronically-balanced 600 ohm telephone input for paging is also
provided. An insert point is also featured on the rear panel for those
applications where an additional EQ or feedback eliminator may be
required.
Outputs
The AMIS120 features 70 volt, 4 & 8 ohm isolated transformer outputs,
plus a tape recorder output by means of dual RCA sockets. A balanced
700mV XLR output is also provided to feed up to six power amplifiers. A
vox triggered relay output is also available on the rear panel for
activation of external devices from the vox muting circuit. In most cases
this would be used as a muting bypass relay, which when used with the
appropriate external attenuator will maintain paging levels irrespective of
the attenuator setting.
VCA Control
The master volume can be controlled remotely. External VCA control
would normally be via a pot connected to a two wire rear panel barrier
strip.
Speaker Zone Selector
A six position push button speaker zone selector with overriding “all call”
is located on the front panel. Each of the six zone selectors switch the 70
volt speaker line output to six separate speaker zones. The “all call”
selector overrides all 6 zones regardless of their on/off condition and
places the 70 volt output to all six zones.
Tone Generator
The AMIS120 comes standard with an in-built four tone generator
module. Tones include Bell, Pre-Announce Chime, Alert Tone and
Evacuate Tone. Any of these tones may be activated from a simple
contact closure connected to the rear panel of the amplifier. A Pre-
announce defeat switch is located on the front panel.
Muting
VOX muting is standard on the AMIS120. A mic or line signal on channels
1 or 2 will mute channels 3 and 4. The muting function can be disabled
via an internal link.
SPECIFICATIONS
Power Output
120 Watts RMS
Maximum Load
40 Ohms @ 70 Volts
Power Bandwidth
60Hz - 17kHz (- 3dB)
Frequency Response
60Hz - 23kHz (- 3dB)
Total Harmonic Distortion
0.5% @ 1kHz
rated power
Signal To Noise Ratio
-74dB all controls center
Tone Controls
Bass @ 100Hz
Boost +12dB Cut -12dB
Treble @ 10kHz
Boost +9dB Cut -9dB
Input Sensitivity
Mics: 1mV @ 200 Ohms
Aux: 150mV @ 47K Ohms
Outputs
Speaker: 70 Volts , 4 & 8 Ohm
Tape: 350mV @10KOhms
Line: Balanced 700mV
Phantom Power
18V DC on Mic ins- Switch
Controls
4 input channel gain
1 Bass control
1 Treble control
1 Master gain control
6 Speaker zone selector
1 Speaker “all call” selector
1 Pre-announce defeat switch
1 Phantom Power switch
Tone Generators
Four tone generator with Bell
Pre-Announce, Alert and Evac
Protection
Soft limiter for overload
protection, plus AC and
DC fuses
Muting
Channels 1 and 2 will
mute channels 3 and 4
Indicators
Power “on” LED
Power Source
120VAC 60Hz
3 pin IEC connector; 24VDC
Power Consumption
250 Watts
Dimensions
3.5" H x 19" W x 13" D
AMIS 120AMIS 120
AMIS 120AMIS 120
AMIS 120
4 Input 120 Watt MIXER-AMPLIFIER
Weight26.5lb

Protection
Internal current limiting protects the amplifier from both overload and
overdrive conditions. Australian Monitor Installation Series amplifiers
feature a protection network that provides greater stability and
performance. Our amplifiers are recognised worldwide for their reliability
and this is due to the extensive levels of current limiting which protect
the amplifiers from both overload and overdrive conditions.
AMIS 120AMIS 120
AMIS 120AMIS 120
AMIS 120
ARCHITECTURAL AND ENGINEERING SPECIFICATIONS
The mixer amplifier shall have four universal input channels, each comprising of a
balanced microphone input with XLR female sockets and an auxiliary input using dual
RCA sockets. The 100V line speaker outputs should be able to be switched via a six
position selector with ”all call“. Aalanced XLR output to drive additional power
amplifiers shall also be provided. This unit shall offer remote master VCA control, 24V
DC and mains power operation, and a vox triggered relay output. The amplifier master
section shall include one master gain control, two EQ controls, one with 12dB of cut
and boost at 100Hz and the other with 9dB of cut and boost and 10kHz speaker
outputs shall be transformer isolated at 100V, 70V, 4 & 8 ohms. The amplifier must be
capable of delivering 120 watts RMS into an 80 inductive ohm load, with less than
0.5% distortion measured at 1kHz and with system hum and noise less than -74dB.
The amplifier shall be an Australian Monitor Installation Series model AMIS120.
Phantom Power
Phantom Power (18V DC) is available from all mic inputs. A rear panel
phantom power on/off switch is also provided.
ABOUT
Australian Monitor
Corporate Headquarters
is located in Sydney,
Australia. The
organization has more
than 20 years experience
in the design and
manufacture of audio
amplifiers and
associated products.
They are a dynamic
corporation, priding
themselves on excellent
customer service, better
features and lower priced
products for Sound
Contractors and Audio
Visual Integrators
worldwide.