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The MX81 is an 8 channel audio mixer that operates from 110/230-240

VAC @ 50/60 Hz or 24 VDC via an external 24VDC supply. 

The MX81 offers high quality audio performance & a wide array of

features in a standard 1 RU size. For table mounting, rubber feet are

supplied but these can be removed if rack mounting is intended. 

There are eight dual purpose inputs consisting of balanced XLR inputs

switchable between mic & line level and dual RCA aux/line level 

inputs. Each input has front panel trim control, status LED and bass 

& treble controls. 

Priority muting is available as an optional addition as is remote 

VCA master control and tone generation. 

The MX81 also features 4 segment LED output metering & the ability 

to internally switch input 1 to be either pre or post master. 

With both Headphone out & Record out also available the MX81 

is extremely versatile & represents excellent value for money. 

Thankyou for purchasing the Australian Monitor Installation 

Series MX81.

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This symbol is intended to alert the user to the presence 

of uninsulated “dangerous voltage” within the product’s

enclosure that may be of sufficient magnitude to 

constitute a risk of electric shock to persons.

This symbol is intended to alert the user to the presence 

of important operation and maintenance (servicing)

instructions in the literature accompanying the appliance.

To prevent electric shock do not use this (polarised) plug

with an extension cord, receptacle or other outlet unless

the blades can be fully inserted to prevent blade exposure.

To prevent electric shock, match wide blade of plug to

wide slot, fully insert.

Caution:

AUS, EUR, USA

Copyright 24th Jan 2006

Rev A 24/01/06

Summary of Contents for MX81

Page 1: ...8 CHANNEL MIC LINE MIXER INSTALLATION AND OPERATION MANUAL MX81 ...

Page 2: ...k fan intake or exhaust ports Do not operate equipment on a surface or in an environment which may impede the normal flow of air around the unit such as a bed rug weathersheet carpet or completely enclosed rack If the unit is used in an extremely dusty or smoky environment the unit should be periodically blown free of foreign matter 14 Do not remove the cover Removing the cover will expose you to ...

Page 3: ...both Headphone out Record out also available the MX81 is extremely versatile represents excellent value for money Thankyou for purchasing the Australian Monitor Installation Series MX81 INTRODUCTION 3 FRONT PANEL 4 REAR PANEL 5 INTERNAL ADJUSTMENTS 6 INSTALLATION TROUBLESHOOTING 7 BASIC SETUP OPERATION 8 DIMENSIONS 9 BLOCK DIAGRAM 10 SPECIFICATIONS 11 This symbol is intended to alert the user to t...

Page 4: ... the correct amount of input level CHANNEL TONE CONTROLS Each input has a 2 band EQ Bass 12dB 100Hz shelving Treble 12dB 10kHz shelving MIC LINE Each input has a switch which controls the sensitivity of the XLR input In the off out or MIC position the XLR input is suitable for use with microphones in the on in or LINE position the XLR input is suitable for use with a balanced line level signal Not...

Page 5: ... LINE output as unbalanced Pin2 should be wired as hot and Pin1 should be wired as ground shield Do not wire Pin3 24VDC SOCKET This 2 1mm x 5 5mm barrel socket is provided for 24V emergency systems and is not switched by the front panel power switch Note The 24VDC socket does not provide trickle charge facility Tip of the connector is positive IEC MAINS INPUT SOCKET This is a standard IEC 3 pin so...

Page 6: ...der is located mid way above channel 1 pot Move the jumper to link the two pins nearer the channel 1 pot to set channel 1 to post master fader HEADPHONE ROUTING The headphone level can be routed so that it is affected by the master volume The default factory setting is pre master fader meaning the master volume does not affect the headphone volume The jumper header is located just behind the front...

Page 7: ...red as ground shield Do not wire Pin3 RECORD OUTPUT The Record output wiring should be kept as short as possible Typically less than 3m INSTALLATION TROUBLESHOOTING TROUBLE LIKELY CAUSE REMEDY Power LED not on Power not reaching unit Check mains connection Check mains fuse Check power switch is on Poor S N ration Incorrect gain structure See setup guide Distorted sound Input is overloaded Reduce i...

Page 8: ...one set the MIC LINE switches to the MIC position If the source is an electret or condenser microphone set the phantom switch to the P P on position CONNECT THE OUTPUTS Turn the amplifiers off Connect the MX81 output to the amplifiers line level input Check that the MX81 is on and then turn on the amplifiers If the amplifiers have a level control set them it to a sensitivity of 0dBu If in doubt se...

Page 9: ...MX81 INSTALLATION OPERATION MANUAL PAGE 9 DIMENSIONS ...

Page 10: ...PAGE 10 MX81 INSTALLATION OPERATION MANUAL BLOCK DIAGRAM ...

Page 11: ...MAX LEVEL OUT 21dBu PHANTOM POWER 15V DC OUTPUTS MASTER OUT Nominal Level 0dBu into 1kohm Imp 100ohm MONO HEADPHONE OUT Nom 6dB into 200ohm Imp 10ohm MONO REC OUT Nom 12dB into 10kohm Imp 10kohm POWER INPUT AC 230V 50Hz or 115V 60Hz 3 pin IEC320 C14 connector DC 24 Volts via 2 1mmx5 5mm DC socket POWER CONSUMPTION MAX 7 VA FUSES MAINS 115V 120mA MAINS 230V 63mA DIMENSIONS h x w x d 44mm x 482mm x ...

Page 12: ...Email sa audiotelex com au PERTH WA SALES 299 Fitzgerald Street West Perth WA 6005 PO Box 404 North Perth WA 6906 Phone 08 9228 4222 Fax 08 9228 4233 Email wa audiotelex com au AUCKLAND NZ SALES Unit B 11 Piermark Drive Albany 1331 New Zealand PO Box 512 Albany 1331 Phone 09 415 9426 Fax 09 415 9864 Email sales audiotelex co nz AUSTRALIA AND NEW ZEALAND www australianmonitor com au INTERNATIONAL S...

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