Crest Audio X 18R, X 20R owner manual Front Panel Features Stereo EQ, Low Frequency-LM

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Stereo Input channel 1

Front Panel Features

Stereo EQ

The Stereo Input channel has two parallel EQ circuits that are controlled by the same set of knobs.

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

Low Frequency—LM

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 Line Input Mic Pad Lo Cut SwitchGain Hz Lo-Cut FilterMono Input Channel High Mid-HM High Frequency-HFLow Mid-LM Low Frequency-LFModule Block Diagram Controls Aux Sends 1 Aux 1 2 PREAux Sends 3, 4, 5 AUX 3-4 PREMono Input Channel PFL MuteRear Panel Line Input Jack 48V Phantom PowerXLR Mic Input Jack Chan Insert 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 From Monitor Solo OFFTape Master Section PWR LED Solo LEDMaster Section Aux 1-2 AFL AUX OUT 1-2 Level ControlAUX OUT 3, 4, 5 & 6 Level Control Aux 3, 4, 5, & 6 AFLMaster section GROUPAssignment Section GroupPK / SIG LED IndicatorsMono assignments for Groups 1, 2, 3 Left Assignments For Groups 1, 2, 3Block Diagram Controls Monitor Level Control Monitor Output SectionSUM Mono Module Block Diagram Controls Mono Source SelectMaster Section Left/Right PK/SIG LED Mono PK/SIG LEDMono AFL MONO, Left & Right Master faders 100mmMaster Section Group 1, 2, 3 & 4 Bus Inputs Left, Right and Mono Bus InputsInsert For Left, Right and Mono Left, Right And Mono Main OutputsRear Panel Block Diagram Aux Outtrs Jacks 1Thru Aux Insert 1ThruAux OUT XLRs 1Thru Group Inserts 1ThruMaster Section Alt Out Tape LineMonitor Out Solo LinkSpecifications 18R/20R Internal Options Connector Pinout DetailUser Notes User Notes Crest P/N