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Introduction
Multimix 12R Reference Manual 1
TABLE OF CONTENTS
Table of Contents ................................................................. 1
Introduction............................................................................. 3
The Alesis Multimix 12R Microphone Preamplifier/Mixer........................3
Using this manual.............................................................................................3
Grounding Instructions...................................................................................4
Installation ...............................................................................5
Unpacking .........................................................................................................5
AC power..........................................................................................................5
Grounding.............................................................................................5
Use clean power...................................................................................6
Power switch.........................................................................................6
Mounting...........................................................................................................6
Connections .............................................................................7
Inputs .................................................................................................................7
Cable common sense...........................................................................7
Microphone Inputs...............................................................................8
Phantom power....................................................................................9
Line-level devices (synthesizers, CD players, video)....................10
TAPE IN jacks .....................................................................................12
Phonograph turntables.....................................................................13
Do not connect any of the following to any input of the
Multimix 12R!......................................................................................13
How to connect effect devices and signal processors...............................14
Effects via Aux Send and Aux Return.............................................14
In-line processing using the INSERT jacks (compressors &
equalizers)...........................................................................................15
Outputs ............................................................................................................18
To a stereo PA system or instrument amplifier............................18
To a mono system..............................................................................18
To a stage monitor (foldback) system............................................18
To another mixer................................................................................19
To a stereo tape recorder..................................................................19
To an ADAT multitrack recorder.....................................................20
Phones..................................................................................................23
Monitor Out........................................................................................23
Operating Instructions......................................................25
Before turning the mixer on, "zero out' the controls................................25
Setting input trim levels................................................................................26
PEAK LED method............................................................................26
Metering/Unity Gain method..........................................................27
Typical Fader and Control Levels................................................................28
Proper gain staging of other equipment........................................29
Introduction
AUX System: Effects Send/Receive............................................................30
How to Set Aux Send and Return Levels.......................................30
Using the meter..............................................................................................32
Avoiding noise................................................................................................33
System noise (ground loops, hum, induced noise).......................33
Applications...........................................................................37
Multitrack recording......................................................................................37
Tracking/Overdubbing.....................................................................37
Mixdown..............................................................................................38
Using the HIGH and LOW EQ controls......................................................39
Monitoring AUX 1 in the PHONES jack.....................................................40
Troubleshooting...................................................................41
Troubleshooting Index..................................................................................41
Maintenance/Service.....................................................................................43
Exterior cleaning.................................................................................43
Specifications....................................................................... 45
Frequency Response......................................................................................45
Connectors......................................................................................................45
Levels...............................................................................................................46
Impedance.......................................................................................................46
Noise performance (typical).........................................................................47
Distortion (THD+N).......................................................................................47
Power...............................................................................................................47
Mounting.........................................................................................................47
Dimensional Drawing .......................................................48
Block diagram ..................................................................... 49
Level diagram.................................................................................................50
Index ........................................................................................ 51