AUSTRALIAN MONITOR ACM250P User manual

250W Power Amplifier
ACM250P
Description
The ACM250P is a 250 watt power amplifier with outputs for 4 ohms, 70 and 100 volt line. It
may be desk or rack mounted. The ACM250P features a flat screwdriver accessible gain con-
trol on the rear panel.
Inputs
The ACM250P features two signal inputs. The unit has industry standard 3 pin XLR microphone
sockets. Two line level sockets are provided for bridged in/out connection.
Outputs
The ACM250P features 100 volt, 70 volt and 4 ohm isolated transformer outputs.
Protection
Internal current limiting protects the amplifier from both overload and overdrive conditions.
The ACM250P also features protection in the form of excess temperature auto cut out. An in
built auto temperature sensing fan will turn on at a factory default level but in most situations,
will never be required.
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.

Power Output 250 Watts RMS
Maximum Load 40 Ohms @ 100 Volts
Power Bandwidth 60Hz - 15kHz < O.5% THD
Frequency Response 60Hz - 15kHz (± 3dB)
Total Harmonic Distortion 0.5% @ 1 kHz rated power
Signal To Noise Ratio -80dB
Input Sensitivity 700mV
Outputs 100V, 70V, 4 Ohm
Controls One gain control on rear of the unit via flathead screwdriver control
Indicators Power “on” and “Protect” LED
Power Source AC 240V - 60Hz, 110V - 50Hz (special) 3 pin IEC connector
Power Consumption 400 Watts
Protection Current Limiter protection, plus AC and DC fuses
Dimensions/Weight 88mm H x 480mm W x 330mm D (Chassis Dimensions only). 15kg
Rack Mounting Standard
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
ARCHITECTURAL AND ENGINEERING SPECIFICATIONS
The 250 watt power amplifier shall be designed to run 100 volt line audio systems. The unit shall also
features a four ohm output. The amplifier may be desk or rack mounted.
The unit shall feature high temperature protection with front panel indication. An in built auto temper-
ature sensing fan shall cool the unit when required and automatically turn off again once the amplifier
is running at the correct temperature. The amplifier must be capable of delivering 250 watts into a forty
ohm inductive 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 ACM250P.