Alesis 12R Maintenance/Service, Exterior cleaning, Refer All Servicing to Qualified Technicians

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Specifications

Maintenance/Service

Exterior cleaning

Disconnect the AC cord, then use a damp cloth to clean the mixer’s metal and plastic surfaces. For heavy dirt, use a non-abrasive household cleaner such as Formula 409 or Fantastik. DO NOT SPRAY THE CLEANER DIRECTLY ONTO THE FRONT OF THE UNIT AS IT MAY DESTROY THE LUBRICANTS USED IN THE SWITCHES AND CONTROLS! Spray onto a cloth, then use cloth to clean the unit.

Never spray any kind of cleaner into the faders, even if it claims to be safe for such use. Such electronic potentiometer cleaners may improve performance for a short time, but they cause the fader to wear out faster by attracting dirt.

Refer All Servicing to Qualified Technicians

We believe that the Multimix 12R is one of the most reliable mixers that can be made using current technology, and should provide years of trouble-free use. However, should problems occur, DO NOT attempt to service the unit yourself. Service on this product should be performed only by qualified technicians. NO USER-SERVICEABLE PARTS INSIDE.

Multimix 12R Reference Manual

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Contents Reference Manual Page Important Safety Instructions Page Page Page Page Page CE Declaration Of Conformity Front Panel Table of Contents Applications Dimensional DrawingIntroduction Using this manualAlesis Multimix 12R Microphone Preamplifier/Mixer ConventionsGrounding Instructions Unpacking InstallationAC power Mounting Use clean powerPower switch Cable common sense ConnectionsInputs Microphone Inputs Phantom power Line-level devices synthesizers, CD players, video Phantom Power will not be Used Tape in jacks Phonograph turntables About stereo effect devices How to connect effect devices and signal processorsEffects via Aux Send and Aux Return Using Aux 1 as an effects send Connecting an in-line processor Connections To a stereo PA system or instrument amplifier OutputsTo a mono system To a stage monitor foldback systemTo a stereo tape recorder To another mixerIn-line Adat recording To an Adat multitrack recorderUsing two Multimix 12Rs for more flexibility Connections Monitor Out PhonesConnections Before turning the mixer on, zero out the controls Operating InstructionsPeak LED method Setting input trim levelsMetering/Unity Gain method Unity gain points Typical Fader and Control LevelsTrim gain ranges Aux Send levelsProper gain staging of other equipment AUX System Effects Send/Receive How to Set Aux Send and Return LevelsPage Output distortion Using the meterSystem noise ground loops, hum, induced noise Avoiding noise① to Eliminate HUM if the Above has Failed Page Operating Instructions Tracking/Overdubbing ApplicationsMultitrack recording Mixdown Using the High and LOW EQ controls Monitoring AUX 1 in the Phones jack Troubleshooting Index TroubleshootingPage Refer All Servicing to Qualified Technicians Maintenance/ServiceExterior cleaning Frequency Response SpecificationsConnectors Impedance LevelsDistortion THD+N PowerNoise performance typical Dimensional Drawing Block Diagram Level diagram Tape IndexWarranty / Contact Alesis Contact Information