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AUSTRALIAN MONITOR IS SERIES - User Manual

AUSTRALIAN MONITOR IS SERIES
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600W/1200W/1600W STEREO PRO AUDIO AMPLIFIERS
INSTALLATION AND OPERATION MANUAL
IS SERIES
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AUSTRALIAN MONITOR IS SERIES Specifications

General IconGeneral
BrandAUSTRALIAN MONITOR
ModelIS SERIES
CategoryAmplifier
LanguageEnglish

Summary

Front Panel Controls

Attenuator

Controls the input level for each channel, with 0dB indicating minimum attenuation.

Clip Indicator

LED indicates output stage status, showing two levels of operation: below clip and clipping/above.

Power Switch

Switches AC power to the amplifier. Press up for power on, down for power off.

Protect Indicator

Red LED illuminates to indicate thermal shutdown has occurred.

Active Indicator

Blue LED illuminates to indicate the amplifier is ON and receiving AC mains power.

Signal Indicator

LED displays output stage status, varying in intensity with output signal level.

Rear Panel Overview

Installation Guide

Power Requirements

Ensure mains voltage matches the rear panel marker (+/- 10%) for proper operation.

Mounting

Amplifier is designed for standard 19" rack mounting, occupying 2 EIA rack units.

Cooling System

Axial fans draw cool air from the front and expel heated air from the rear. Unrestricted airflow is crucial.

Input Wiring

Instructions for balanced and unbalanced input wiring, emphasizing proper grounding and cable use.

Output Wiring

Guidance on using appropriate gauge wire and cable types for speaker connections.

Binding Post Outputs

Details using banana plugs or bare wires with binding posts, noting positive and negative terminals.

Speaker Outputs

Describes using the 4-pole connector for speaker outputs, including single, dual, and bi-amp connections.

Operating the Amplifier

Important Connection Notes

Emphasizes earthing signal sources, checking mains voltage, power switch status, system grounds, and speaker handling.

Powering Up Sequence

Details the amplifier's power-up sequence, including ICS circuit and relay clicks.

Level Matching

Describes attenuator use for gain control and level matching, noting full power output requires attenuator above halfway.

Input Sensitivity

Discusses input sensitivity settings and impedance, relating output voltage swing to mains voltage and load.

Hum Problems and Solutions

Explains electrostatic radiation, electromagnetic radiation, and earth loops as causes of hum and provides solutions.

Signal Ground-Lift Switch

Explains the switch disconnects input ground to reduce hum, with notes on shielding and balanced sources.

Maintenance Procedures

Fan Cleaning

Details cleaning dust from fan grilles and blades to ensure proper cooling and prevent bearing damage.

Fuse Inspection and Replacement

Instructions for checking and replacing fuses, emphasizing safety and using correct fuse types.

Specifications

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