AUSTRALIAN MONITOR ACM250 Bedienungsanleitung

250W, 6 Channel Mixer Amplifier

ACM250

Description

The ACM250 is a 6 channel, 250 watt mixer amplifier suitable for rack or desk mounting. The

amplifier is a self contained compact unit of solid steel construction.

Inputs

The ACM250 has six 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. Line Input

6 has a lower input sensitivity and is suitable for high level CD players.

Outputs

The ACM250 features 100 volt, 70 volt and 4 ohm isolated transformer outputs, plus a tape

recorder output by means of dual RCA sockets. A balanced 700mV XLR output is also provid-

ed to feed up to 6 power amplifiers.

3 Band EQ

The ACM250 includes a 3 band equaliser (Bass, Middle and High), giving the user a wider

range of tone controls for high level music or difficult voice applications.

Tone Generator

The ACM250 comes standard with an in-built four tone generator module. Tones include Bell,

Pre-announce Chime, Alert Tone (AS2220.1) and Evacuate Tone (AS2220.1). Any of these

tones may be activated from a simple contact closure on the rear panel of the amplifier.

Muting

VOX muting is standard on the ACM250. A mic or line signal on channels 1 or 2 will mute chan-

nels 3, 4, 5 and 6. The muting function can be disabled if via an internal link.

Phantom Power

Phantom Power (18V DC) is available from all mic inputs. A rear panel phantom power on/off

switch is also provided.

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.

Power Output 250 watts RMS

Maximum Load 40 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 -74dB with all controls at their centre position

Tone Controls Bass @ 100Hz: Boost +12dB Cut -12dB; Mid @ 600Hz: Boost +12dB, Cut -12dB;

Treble @ 10kHz: Boost +9dB Cut -9dB

Inputs Six mic/aux universal inputs with XLR female mic sockets and dual RCA Phono aux sockets

Input Sensitivity Mics: 1mV @ 200 Ohms; Aux 1 - 5: 75mV @ 47K Ohms; Aux 6: 300mV @ 47K Ohms

Outputs Speaker: 100, 70 Volts, 4 Ohms; Tape: 350mV @ 10K Ohms; Line: Balanced 700mV

Phantom Power 18 Volts DC on all Mic inputs

Controls 6 Input channel gain controls, 1 Bass control, 1 Mid Control, 1 Treble control,

1 Master gain control, Phantom Power on/off switch (on rear panel)

Indicators Power ”on“ and ”Protect“ LED

Power Source AC 230/240V - 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

Tone Generators Built-in four tone generator module.

Includes Bell, Pre-Announce, Alert and Evac Tones

Muting Built-in VOX muting. Channels 1 and 2 will mute channels 3, 4, 5 and 6

Engineered and Distributed By AUDIO TELEX COMMUNICATIONS PTY LTD (ABN 78 001 345 482), 149 Beaconsfield Street, Silverwater, Sydney, NSW, 2128 Australia

NSW Tel: (02) 9647 1411 Fax: (02) 9648 3698 VIC Tel: (03) 9890 7477 Fax: (03) 9890 7977 QLD Tel: (07) 3852 1312 Fax: (07) 3252 1237 WA Tel: (08) 9228 4222 Fax: (08) 9228 4233

TAS Tel: (03) 6228 6373 Fax: (03) 6278 1063 SA Tel: (08) 8352 4444 Fax: (08) 8352 4488 Export Enquiries: [email protected] Website: www.australianmonitor.com.au

ARCHITECTURAL AND ENGINEERING SPECIFICATIONS

The mixer amplifier shall have six universal inputs each comprising of a balanced microphone with XLR

female sockets and an auxiliary input using dual RCA sockets. A balanced XLR output to drive addi-

tional power amplifiers shall also be provided.

The amplifier master section shall include one master gain control, three EQ controls, one with 12dB of

cut and boost at 100Hz, one with 12dB cut and boost at 600Hz and the other with 9dB of cut and boost

at 10kHz. Speaker outputs shall be transformer isolated at 100 volt, 70 volt and 4 ohms. The amplifier

must be capable of delivering 250 watts RMS into a 40 inductive ohm load, with less than 0.5% distor-

tion measured at 1kHz and with system hum and noise less than -74dB.

The amplifier shall be an Australian Monitor Installation Series model ACM250.

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