Alesis 12R manual Microphone Inputs

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Connections

Microphone Inputs

The Alesis Multimix 12R features eight studio-grade, low-noise hybrid microphone preamplifiers. These [MIC] jacks are designed to work with almost any low-impedance microphone using standard 3- conductor XLR connectors. The [MIC] jacks also feature 48 volt phantom power, which may be turned on and off by the [PHANTOM] switch on the back panel, for condenser microphones which require external powering.

Balanced Mic Input

2 1

Hot

Ground

3

Cold

Socket (female)

The MIC Input is designed to accept a wide range of balanced or unbalanced low impedance input signals, with up to 60 dB of amplification available (which is 10 to 20 dB more than many other rack-mount mixers). It is wired with "pin 2 hot" according to the accepted standard.

✪Use only one input per channel. The LINE IN jack and the MIC IN jack of a channel can’t be used at the same time. If you turn up the level of a line source to hear it at the same time a microphone is connected, you may damage the microphone.

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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 Dimensional Drawing ApplicationsAlesis Multimix 12R Microphone Preamplifier/Mixer Using this manualIntroduction ConventionsGrounding Instructions Installation AC powerUnpacking Use clean power Power switchMounting Connections InputsCable common sense Microphone Inputs Phantom power Line-level devices synthesizers, CD players, video Phantom Power will not be Used Tape in jacks Phonograph turntables How to connect effect devices and signal processors Effects via Aux Send and Aux ReturnAbout stereo effect devices Using Aux 1 as an effects send Connecting an in-line processor Connections To a mono system OutputsTo a stereo PA system or instrument amplifier To a stage monitor foldback systemTo another mixer To a stereo tape recorderTo an Adat multitrack recorder In-line Adat recordingUsing two Multimix 12Rs for more flexibility Connections Phones Monitor OutConnections Operating Instructions Before turning the mixer on, zero out the controlsSetting input trim levels Peak LED methodMetering/Unity Gain method Trim gain ranges Typical Fader and Control LevelsUnity gain points Aux Send levelsProper gain staging of other equipment How to Set Aux Send and Return Levels AUX System Effects Send/ReceivePage Using the meter Output distortionAvoiding noise System noise ground loops, hum, induced noise① to Eliminate HUM if the Above has Failed Page Operating Instructions Applications Multitrack recordingTracking/Overdubbing Mixdown Using the High and LOW EQ controls Monitoring AUX 1 in the Phones jack Troubleshooting Troubleshooting IndexPage Maintenance/Service Exterior cleaningRefer All Servicing to Qualified Technicians Specifications ConnectorsFrequency Response Levels ImpedancePower Noise performance typicalDistortion THD+N Dimensional Drawing Block Diagram Level diagram Index TapeWarranty / Contact Alesis Contact Information