Harman 1210KA manual Glossary

Page 44

GLOSSARY

Auxiliary send

An output from the console comprising a mix of signals from channels derived

 

independently of the main stereo mix.

Balance

The relative levels of the left and right channels of a stereo signal.

Balanced

A method of audio connection which ‘balances’ the wanted signal between two

 

wires, these wires also have a screen which carries no signal. Any interference is

 

picked up equally by the two wires, which results in cancellation of the unwanted

 

signal. In this guide, the term can refer to various circuit architectures. Connection

 

details are given in relevant sections.

Clipping

The onset of severe distortion in the signal path, usually caused by the peak signal

 

voltage being limited by the circuit’s power supply voltage.

DAT

Digital Audio Tape, a cassette-based digital recording format.

dB (decibel)

A ratio of two voltages or signal levels, expressed by the equation dB=20Log10

 

(V1/V2). Adding the suffix ‘u’ denotes the ratio is relative to 0.775V RMS.

DI(direct injection)

The practice of connecting an electric musical instrument directly to the input of the

/DI Box

mixing console, rather than to an amplifier and loudspeaker which is covered by a

 

microphone feeding the console.

Equaliser

A device that allows the boosting or cutting of selected bands of frequencies in the

 

signal path.

Fader

A linear control providing level adjustment.

Feedback

The `howling’ sound caused by bringing a microphone too close to a loudspeaker

 

driven from its amplified signal.

Foldback

A feed sent back to the artistes via loudspeakers or headphones to enable them to

 

monitor the sounds they are producing.

Frequency response

The variation in gain of a device with frequency.

Gain

The amount of amplication in level of the signal.

Headroom

The available signal range above the nominal level before clipping occurs.

Impedance balancing A technique used on unbalanced outputs to minimise the effect of hum and interference when connecting to external balanced inputs.

Insert

A break point in the signal path to allow the connection of external devices, for in-

 

stance signal processors or other mixers at line level signals. Nominal levels can be

 

anywhere between 0dBu to +6dBu, usually coming from a low impedance source.

Pan (pot)

Abbreviation of ‘panorama’: controls the levels sent to left and right outputs.

 

 

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Soundcraft EFX/EPM User Guide Issue 1210

Page 43 Page 45
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Page 43 Page 45
Contents User Guide Soundcraft EFX/EPM User Guide Issue User Guide EPM Models Contents Safety Symbol Guide Important Safety Instructions Neutral Blue US White Live Hot Brown US Black Advice for Those WHO Push the Boundaries IntroductionOverview 60-SECOND Guide EFXPhantom Power Peak LEDMaster Faders Main MetersPFL 60-SECOND Guide EPMAUX 1/2 Sends 23 2-TRACK Controls Mono OUT ¼ Jack22 2-TRACK Inputs Wiring UP Mic InputLine Input Insert PointStereo Inputs Stereo 1/2 and Stereo Mix InsertsMix Outputs Aux & FX Bus OutputsGrounding and Shielding HeadphonesPolarity Phase If in doubt please contact Soundcraft customer support Problem SolvingProducts Under Warranty OUT-OF-WARRANTY Products Block Diagram Soundcraft EFX Block Diagram Soundcraft EPM Mono Input Channel EFX shown GainLF EQ HF EQMID EQ Aux 2 Send EPM only PANMute Input Channel FaderGain control sets the level of the channel signal Inputs Stereo 1/2Gain MF EQChannel Peak LED BalanceFader Soundcraft EFX/EPM User Guide Issue Power Indicator Master Section EFXMIX OUTPUTS, Inserts & Mono Output Bargraph MetersHeadphones Jack AUX 1 PRE/POST Switch and AUX 2 on EPMTrack Track to MIXFootswitch EFX only FX BUS Output EFX only Aux 2 on EPMStereo Return Inputs EFX only Stereo Return Level EFX onlySet Audio Levels FX OperationSelect and Load a Program FX Processor Controls EFX only Reverbs Reverb Controls KaraokeDelays Delay Controls Modulated EffectsPhaser FlangerTremelo/Pan VibratoFactory Reset Effects Data Chart EFX only Initial Setup Using Your EFX or EPM ConsoleMicrophone Placement Page Applications Application 3 Places of Worship using EFX Application 4 Recording Soundcraft EFX/EPM User Guide Issue Glossary Distort the signal PhasePeaking BandTypical Connecting Leads Soundcraft EFX/EPM User Guide Issue Soundcraft EFX/EPM User Guide Issue Karaoke MARK-UP Sheets EPM Soundcraft EFX/EPM User Guide Issue Fitting Optional Rackmount Ears Part numbers for the kits areSoundcraft EFX/EPM User Guide Issue EPM/EFX Typical Specifications Soundcraft EFX/EPM User Guide Issue Warranty Benefit of this Warranty may not be assigned by the End UserSoundcraft EFX/EPM User Guide Issue Soundcraft EFX/EPM User Guide Issue Page Soundcraft Soundcraft USA Balboa Boulevard
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