Alesis 12R manual Noise performance typical, Distortion THD+N, Power

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Specifications

Noise performance (typical)

Measured at MAIN OUT +4 dBu jacks, unbalanced load, 22 Hz to 22 kHz, all channels panned to center.

MIC IN to INSERT OUT:	-128.5 dBu Equivalent Input
	Noise at maximum gain

Residual output noise (MASTER fader at nominal, channel faders at minimum):

<-88 dBu

12 inputs, faders and trims at unity gain, inputs terminated 150Ω: <-85 dBu unbalanced

(+22 dB max unbalanced out =

107 dB dynamic range)

Distortion (THD+N)

Measured with a 0 dBu signal coming into a MIC IN jack with trim set for a +15 dBu output from the insert jack.

At INSERT jack:Better than 0.0010%

At MAIN OUT (+21 dBu balanced output level)

Better than 0.0015%

Power

U.S.A. model:	120 VAC, 60 Hz, 40 watts power
	consumption maximum

Mounting

19" EIA rack mountable, 3 spaces

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 Dimensional Drawing ApplicationsUsing this manual IntroductionAlesis 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 Outputs To a stereo PA system or instrument amplifierTo a mono system 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 Typical Fader and Control Levels Unity gain pointsTrim gain ranges 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 Tracking/Overdubbing ApplicationsMultitrack recording Mixdown Using the High and LOW EQ controls Monitoring AUX 1 in the Phones jack Troubleshooting Troubleshooting IndexPage Refer All Servicing to Qualified Technicians Maintenance/ServiceExterior cleaning Frequency Response SpecificationsConnectors Levels ImpedanceDistortion THD+N PowerNoise performance typical Dimensional Drawing Block Diagram Level diagram Index TapeWarranty / Contact Alesis Contact Information