Alesis 12R manual

Page 52

Specifications

Hum or noise from	Ground loop,	Try plugging the unit
output.	unshielded cables.	into another power
		jack or different audio
		cables.
No meter, although	Monitor switch is set	Set switch to "MSTR"
audio is heard through	to “TAPE”
main outputs.
Crackling sounds.	Dirty or corroding	Unplug and replug
	connections on back	connectors several
	of mixer.	times, clean plugs.
	A microphone cable	Unplug the
	has a small short or	microphone cables
	break.	from the mixer until
		the noisy one is found,
		and replace it.

Image 52

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 AC power InstallationUnpacking Power switch Use clean powerMounting Inputs ConnectionsCable common sense Microphone Inputs Phantom power Line-level devices synthesizers, CD players, video Phantom Power will not be Used Tape in jacks Phonograph turntables Effects via Aux Send and Aux Return How to connect effect devices and signal processorsAbout stereo effect devices 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 Multitrack recording ApplicationsTracking/Overdubbing Mixdown Using the High and LOW EQ controls Monitoring AUX 1 in the Phones jack Troubleshooting Troubleshooting IndexPage Exterior cleaning Maintenance/ServiceRefer All Servicing to Qualified Technicians Connectors SpecificationsFrequency Response Levels ImpedanceNoise performance typical PowerDistortion THD+N Dimensional Drawing Block Diagram Level diagram Index TapeWarranty / Contact Alesis Contact Information