Alesis 12R manual Line-level devices synthesizers, CD players, video

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Connections

Line-level devices (synthesizers, CD players, video)

The Multimix 12R features line-level inputs on 1/4" phone jacks which accept standard unbalanced or balanced signals

Unbalanced Line Input

Balanced Line Input

Signal

Ground

Tip

Tip

Sleeve

Sleeve

Hot

 

 

Tip

Cold

 

 

Ring

Ground

 

 

Sleeve

 

 

 

 

 

 

 

 

 

 

 

 

Tip

 

Ring

Sleeve

Unbalanced -10 dBV line level sources: Most synthesizers, drum machines, effect devices, cassette decks and CD players operate at this level. Their average signal level is about 1/3 of a volt. They have a 2- conductor output jack that is either a 1/4" phone or "RCA phono" type. These may be plugged directly into any of the Multimix 12R’s [LINE IN] jacks, with the [TRIM] level set at approximately the 1 o'clock position. Plug stereo sources such as synthesizers, CD players, and drum machine main outputs into the STEREO LINE channels (9/10 and 11/12) if possible.

Electric guitars and basses may be plugged directly into the [LINE IN] jacks, if you raise the [TRIM] level. The Multimix 12R has more than enough gain (up to 50 dB when the channel fader and trim are set to maximum) for guitars, although some pickups may sound better if they're plugged directly into a high-impedance preamp designed for guitar use. Plug the output of such preamps into any [LINE IN] jack.

A reminder: do not plug a line input and a microphone input into the same channel. The inputs are not designed to handle two sources at the same time. If you crank up the line level input to extremes to compensate for the level loss, 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 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
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