Alesis 12R Manual Do Utilizador

Introduction

Multimix 12R Reference Manual

1

The Alesis Multimix 12R Microphone Preamplifier/Mixer........................3
Using this manual.............................................................................................3
Grounding Instructions...................................................................................4

Unpacking .........................................................................................................5
AC power..........................................................................................................5

Grounding.............................................................................................5
Use clean power ...................................................................................6
Power switch.........................................................................................6

Mounting...........................................................................................................6

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

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

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 Index..................................................................................41
Maintenance/Service.....................................................................................43

Exterior cleaning.................................................................................43

Frequency Response......................................................................................45
Connectors......................................................................................................45
Levels ...............................................................................................................46
Impedance.......................................................................................................46
Noise performance (typical).........................................................................47
Distortion (THD+N).......................................................................................47
Power...............................................................................................................47
Mounting.........................................................................................................47

Level diagram.................................................................................................50