AUSTRALIAN MONITOR ACM604 Bedienungsanleitung

4 x 60 Watt Mixer Amplifier

ACM604

Description

The ACM604 features four individual 60 watt mixer amplifiers in a 2 RU chassis and is suitable

for rack or desk mounting.

Inputs

Each of the four mixer amplifiers feature three dual mic/line inputs accessible via barrier strips

on the rear of the unit. Each input may be switched between mic or line via an internal dip

switch. A level control is available per input channel.

Outputs

The ACM604 features 100 volt, 70 volt, 8 ohm isolated transformer outputs per amplifier

module. With the addition of an optional tone generator module 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 appro-

priate external attenuator, such as our ATC5143 or ATC5143FS, will maintain paging levels irre-

spective of the attenuator setting. VCA control of the master output of each amplifier module

is also available via the rear terminal strip. Each amplifier also includes a recessed bass and tre-

ble control.

Tone Generator

The ACM604 offers the convenience of an optional plug in tone generator module. All four

channels of this amplifier may have their own tone generator module. The individual tones are

accessible via contact closure on the rear of each amplifier module. There are four tones on

the optional plug in module, alert, evac, bell and pre announce. Spare contacts on the board

allow a vox triggered output for the activation of remote devices.

Muting

VOX muting is standard on the ACM604. A mic or line signal on channel 1 will mute channels

2 and 3 per amplifier. The muting function can be disabled via an internal link. Each of the four

mixer amplifier modules has its own muting circuit.

Phantom Power

Phantom Power (18 volts DC) is available from all mic inputs. An internal dip switch allows

phantom power to be selected on a per input, per module basis.

Protection

Internal current limiting protects the amplifier from both overload and overdrive conditions.

Fan cooling will be activated if the unit exceeds a factory preset temperature.

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 4 x 60 Watts RMS

Maximum Load Per Amplifier 160 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; Treble @ 10kHz: Boost +9dB Cut -9dB

Inputs Three mic/aux universal inputs per mixer amplifier module.

Mic/Line selection can be made via an internal dip switch

Input Sensitivity Mics: 1mV @ 200 Ohms; Aux 75mV @ 47K Ohms

Outputs Speaker: 100, 70 Volts, 8 Ohms

VCA Master Level Control Via a 1K pot added to the rear barrier strip of each amplfier module

Phantom Power Selectable per input of each amplifier module via an internal dip switch. 18 V

Controls 3 Input channel gain controls, 1 Bass control, 1 Treble control,

1 Master VCA gain control per amplifier

Indicators Power “on” LED

Power Source AC 240V - 60Hz, 110V - 50Hz (special) 3 pin IEC connector

Power Consumption 400 Watts

Protection Overload and overdrive protection, plus AC and DC fuses

Dimensions/Weight 88mm H x 480mm W x 350mm D (Chassis Dimensions only). 17kg

Rack Mounting Standard

Tone Generators Optional four tone generator module. Includes Bell, Pre-Announce,

Alert and Evac Tones, plus a vox triggered relay output.

Muting Built-in VOX muting. Channel 1 will mute channels 2 and 3 per amplifier

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 four channel mixer amplifier shall have three universal input channels, accessible via a rear panel

barrier strip on each of the four amplifier modules. Each amplifier module shall allow remote VCA con-

trol of the master output. Phantom power selection on a per channel, per amplifier basis shall also be

included. A Vox triggered output shall also be available on an optional four tone generator card.

Each amplifier master section shall include one master VCA accessible gain control, two EQ controls,

one with 12dB of cut and boost at 100Hz and the other with 9dB of cut and boost at 10kHz. Speaker

outputs shall be transformer isolated at 100 volt, 70 volt & 8 ohms. The amplifiers must be capable of

delivering 60 watts RMS into a 160 ohm inductive load, with less than 0.5% distortion measured at

1 kHz and with system hum and noise of -74dB or better.

The amplifier shall be an Australian Monitor Installation Series model ACM604.

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