Crest Audio X 18R, X 20R High Frequency-HF, High Mid-HM, Low Mid-LM, Low Frequency-LF, EQ On

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Mono Input Channel 1

Front Panel Features

Equalizer (EQ)

Many audio signals coming into the console require some degree of corrective EQ in order to be part of a good-sounding mix.The X 18R & X 20R offer a very useful and great-sound- ing EQ section on each channel.The input EQ consists of four bands: High, High-mid, Low- mid and Low.The High and Low frequency bands each have a boost/cut control and their fre- quencies are fixed.The High-mid and Low-mid bands each have variable boost/cut along with tunable frequency.

High Frequency—HF

Boost / Cut 15 dB boost and cut. Shelving @12 kHz

High Mid—HM

Frequency continuously sweepable between 400 Hz and 8 kHz.

Boost / Cut 15 dB boost and cut. Bell curve with a BW of approx 1.5 octaves

Low Mid—LM

Frequency continuously sweepable between 100 Hz and 2 kHz.

Boost / Cut 15 dB boost and cut. Bell curve with a BW of approx 1.5 octaves

Low Frequency—LF

Boost / Cut 15 dB boost and cut. Shelving @ 80 Hz.

EQ On

Equalizer is OFF. The equalizer circuitry is bypassed.

Equalizer is ON. This switch is used to activate the EQ section and can be used to make A/B comparisons between "flat" and eq'd signals.

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Contents 18R / X 20R Page Important Precautions Page Important Safety Instructions Wichtige Sicherheitshinweise Instructions Importantes De Securite Instrucciones Importantes Para Su Seguridad Table Of Contents 18R/20R Block Diagram How To Use This Manual Mono Input Channel Hz Lo-Cut Filter Lo Cut SwitchLine Input Mic Pad GainMono Input Channel Low Frequency-LF High Frequency-HFHigh Mid-HM Low Mid-LMModule Block Diagram Controls AUX 3-4 PRE Aux 1 2 PREAux Sends 1 Aux Sends 3, 4, 5Mono Input Channel PFL MuteRear Panel Chan Insert Jack 48V Phantom PowerLine Input Jack XLR Mic Input JackStereo Input Channel SUM Inputs Str Line In Mic PadModule Low Frequency-LM Front Panel Features Stereo EQStereo Input Channel AUX 5 and AUX 6 are post-fader AUX 5 and AUX 6 are pre-fader Stereo Input Channel Input Fader BAL ControlRear Panel Block Diagram +48V On Master Section Solo OFF From MonitorTape Master Section PWR LED Solo LEDMaster Section Aux 3, 4, 5, & 6 AFL AUX OUT 1-2 Level ControlAux 1-2 AFL AUX OUT 3, 4, 5 & 6 Level ControlMaster section Left Assignments For Groups 1, 2, 3 GroupPK / SIG LED IndicatorsGROUPAssignment Section Mono assignments for Groups 1, 2, 3Block Diagram Controls Monitor Output Section Monitor Level ControlSUM Mono Module Block Diagram Controls Mono Source SelectMaster Section MONO, Left & Right Master faders 100mm Mono PK/SIG LEDLeft/Right PK/SIG LED Mono AFLMaster Section Left, Right And Mono Main Outputs Left, Right and Mono Bus InputsGroup 1, 2, 3 & 4 Bus Inputs Insert For Left, Right and MonoRear Panel Block Diagram Group Inserts 1Thru Aux Insert 1ThruAux Outtrs Jacks 1Thru Aux OUT XLRs 1ThruMaster Section Solo Link Tape LineAlt Out Monitor OutSpecifications 18R/20R Internal Options Connector Pinout DetailUser Notes User Notes Crest P/N