Australian Monitor MX82 User Manual
MX82
8 CHANNEL STEREO MIC/LINE MIXER
INSTALLATION AND OPERATION MANUAL
IMPORTANT SAFETY INFORMATION
1. Save the carton and packing material even if the equipment has
arrived in good condition. Should you ever need to ship the unit, use
only the original factory packing.
2. Read all documentation before operating your equipment. Retain
all documentation for future reference.
3. Follow all instructions printed on unit chassis for proper operation.
4. Do not spill water or other liquids into or on the unit, or operate
the unit while standing in liquid.
5. Make sure power outlets conform to the power requirements listed
on the back of the unit.
6. Do not use the unit if the electrical power cord is frayed or broken.
The power supply cords should be routed so that they are not likely
to be walked on or pinched by items placed upon or against them,
paying particular attention to cords and plugs, convenience
receptacles, and the point where they exit from the appliance.
7. Always operate the unit with the AC ground wire connected to the
electrical system ground. Precautions should be taken so that the
means of grounding of a piece of equipment is not defeated.
8. Mains voltage must be correct and the same as that printed on the
rear of the unit. Damage caused by connection to improper AC voltage
is not covered by any warranty.
13. Do not block 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 potentially dangerous voltages. There are no user serviceable
parts inside.
15. Do not drive the inputs with a signal level greater than that required
to drive equipment to full output.
16. Do not connect the inputs / outputs of amplifiers or consoles to any
other voltage source, such as a battery, mains source, or power supply,
regardless of whether the amplifier or console is turned on or off.
17. Do not run the output of any amplifier channel back into another
channel’s input. Do not parallel- or series-connect an amplifier output
with any other amplifier output. Australian Monitor Inc is not
responsible for damage to loudspeakers for any reason.
18. Do not ground any red (“hot”) terminal. Never connect a “hot” (red)
output to ground or to another “hot” (red) output!
19. Non-use periods. The power cord of equipment should be unplugged
from the outlet when left unused for a long period of time.
9. Have gain controls on amplifiers turned down during power-up
to prevent speaker damage if there are high signal levels at the inputs.
10 Power down & disconnect units from mains voltage before making
connections.
11. Never hold a power switch in the “ON” position if it won’t stay
there itself!
12. Do not use the unit near stoves, heat registers, radiators, or other heat
producing devices.
THIS SAFETY INFORMATION IS OF A GENERAL NATURE AND MAY BE SUPERSEDED BY INSTRUCTIONS CONTAINED WITHIN THIS MANUAL
20. Service Information Equipment should be serviced by qualified service
personnel when:
A. The power supply cord or the plug has been damaged.
B. Objects have fallen, or liquid has been spilled into the equipment
C. The equipment has been exposed to rain
D. The equipment does not appear to operate normally, or exhibits a marked
change in performance
E. The equipment has been dropped, or the enclosure damaged.
INTRODUCTION AND CONTENTS
The MX82 is an 8 channel stereo audio mixer that operates from 110/230-240
VAC @ 50/60 Hz. The MX82 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 four
mic/line inputs consisting of balanced XLR inputs switchable between mic &
line level. The first 4 channels also feature a line level direct output which can
be used to feed additional amplifiers, mixers or recording devices. An internal
jumper allows the first 4 inputs to be routed to the direct output and the master
outputs or just the direct output, either pre or post fader. Inputs 5-8 are four
dedicated stereo RCA 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 MX82 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 MX82 is extremely versatile. The MX82 has
taken the AMIS heritage of contractor friendly installation product & has added
the audio fidelity needed in today’s AV contracting market.
INTRODUCTION 3
FRONT PANEL 4
REAR PANEL 5
INTERNAL ADJUSTMENTS 6
INSTALLATION & TROUBLESHOOTING 7
BASIC SETUP AND OPERATION 8
DIMENSIONS 9
BLOCK DIAGRAM 10
SPECIFICATIONS 11
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK),
NO USER SERVICEABLE PARTS INSIDE,
REFER SERVICING TO QUALIFIED SERVICE PERSONAL.
WARNING!
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
Caution:
AUS, EUR, USA
Copyright 9th Feb 2006
Rev A 13/02/07
This symbol is intended to alert the user to the presence
of uninsulated “dangerous voltage” within the products
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 operational 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.
PAGE 3MX82 INSTALLATION & OPERATION MANUAL
FRONT PANEL
4
5 8
1
GAIN TRIM
1
This control is used to adjust the input gain and affects both the XLR and
the RCA inputs. The input gain can be adjusted by +/- 15dB. This allows
a wide rage of program sources to be set up with optimum gain structure.
With the gain trim in the centre position, the boost/cut is set to 0dB. See
the block diagram on page 10 for details of the gain structure.
LEVEL
2
Controls the level of the input signal.
INPUT STATUS LEDS
3
Each input has an LED status indicator. The LED is green when there is
signal present and red if the signal is approaching clip. If the LED begins
to light red this would indicate the internal signal level is 6dB before clip.
Note that the front panel level control is post status LED and as such, the
status LED is NOT affected by the level control. If an input channel is
clipping use the gain trim to adjust the correct amount of input level.
CHANNEL TONE CONTROLS
4
32
6
10
1
6
MASTER
This pot controls the overall mixed output level for both left and right
channels.
7
HEADPHONE
This 1/4” jack socket allows headphones to be used for monitoring. It can
be set as pre or post master volume control. See “Internal Settings” on
page 6. Default factory setting is pre master volume control.
8
MASTER VU DISPLAY
This VU display indicates output level for both left and right channels.
9
POWER SWITCH
This switch switches power from the mains. The up position is on.
10
POWER ON LED
TThis indicates there is power to the unit.
7
9
1
1
Each input has a 2 band EQ.
Bass – +/-12dB 100Hz shelving
Treble – +/-9dB 10kHz shelving
MIC / LINE
5
Channels 1 to 4 have 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.
NOTE: The Mic/Line switches only affect the XLR input.
PAGE 4 MX82 INSTALLATION & OPERATION MANUAL
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