AUSTRALIAN MONITOR ACM120P User manual

120W Power Amplifier
ACM120P Description
The ACM120P is a 120 watt power amplifier with outputs for 4 and 8 ohms, 70 and 100 volt
line. It may be desk or rack mounted. The ACM120P features a flat screwdriver accessible gain
control on the rear panel. This amplifier features a status LED.
Inputs and Outputs
The ACM120P features a balanced line level XLR input with a parallel output to feed additional
power amplifiers. The unit has industry standard 3 pin XLR microphone sockets. The ACM120P
features 100 volt, 70 volt, 8 and 4 ohm isolated transformer outputs via a rear panel barrier strip.
Protection
Internal current limiting protects the amplifier from both overload and overdrive conditions.
Should the amplifier be overdriven, a current limiter will protect the unit, and in a worst case
scenario the amplifier will shut down until the problem is resolved. Once the problem is fixed
(shorted speaker line, or overdriven input), the amplifier will automatically reset and continue
operation. The ACM120P features generous heatsinking.
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.

Engineered and Distributed By AUDIO TELEX COMMUNICATIONS PTY LTD (ABN 78 001 345 482),
149 Beaconsfield Street, Silverwater, Sydney, NSW, 2128 Australia
NSW Tel: [phone] Fax: [phone] VIC Tel: [phone] Fax: [phone] QLD Tel: [phone] Fax: [phone]
WA Tel: [phone] Fax: [phone] TAS Tel: [phone] Fax: [phone] SA Tel: [phone] Fax: [phone]
Export Enquiries: [email protected] Website: www.australianmonitor.com.au
Power Output 120 Watts RMS
Maximum Load 80 Ohms @ 100 Volts
Power Bandwidth 60Hz - 15kHz < 0.5% THD
Frequency Response 60Hz - 15kHz (± 3dB)
Total Harmonic Distortion 0.5% @ 1kHz rated power
Signal To Noise Ratio -80dB
Input Sensitivity 700mV
Outputs 100V, 70V, 4 Ohm, 8 Ohm
Controls One gain control on rear of the unit via flathead screwdriver control
Indicators Power “on” LED
Power Source AC 240V - 60Hz, 110V - 50Hz (special) 3 pin IEC connector
Power Consumption 300 Watts
Protection Current Limiter protection, plus AC and DC fuses
Dimensions/Weight 88mm H x 480mm W x 280mm D (Chassis Dimensions only). 12kg
Rack Mounting Standard
ARCHITECTURAL AND ENGINEERING SPECIFICATIONS
The 120 watt power amplifier shall be designed to run 100 and 70 volt line audio systems. The unit shall
also feature a 4 and 8 ohm output. The amplifier may be desk or rack mounted.
The amplifier must be capable of delivering 120 watts into an 80 ohm inductive load with less than 0.5%
distortion measured at 1kHz and with system hum and noise of -80dB or better. Internal current limit-
ing shall protect the amplifier from both overload and overdrive conditions.
The amplifier shall be an Australian Monitor Installation Series model ACM120P.