Crest Audio X 18R, X 20R Aux 1 2 PRE, Aux Sends 1, Aux Sends 3, 4, 5, AUX 3-4 PRE, AUX 5-6 PRE

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Mono Input Channel 1

AUX Send Features

Six auxiliary Sends are available for creating individual output mixes. These can be used to drive effects processors, provide monitor mixes, create broadcast or alternate sound reinforcement mixes, or for other special requirements.

NOTE: Normally, the signal feeding the Aux Sends is derived after the chan fader (Post-Fader). The fader controls the level of the chan signal feeding the individual Aux Send pots. Each Aux Send pot is then used to generate a sub-mix of this channel signal.This Post-fader signal feeding the Auxes is also affected by the Mute switch; if the channel is muted, the Aux Send no longer receives a signal.There are many cases where an independent mix is desired, and the operator doesn’t want the Chan fader to affect the signal.The 3 PRE switches allow the operator to change the source to each pair of Auxes from the normal post-fader signal to a signal unaffected by the fader. The default PRE setting is pre-fader, but it is still post-insert/post-EQ/post-Mute. An internal setting (per channel) can be changed so that this PRE source becomes either pre-insert or pre- EQ.An additional jumper allows this PRE setting to also be independent of the channel mute.

Aux 1 - 2 PRE

AUX 1/2 stereo pair is post-fader

AUX 1/2 stereo pair is pre-fader

Aux Sends 1 & 2

Auxes 1 and 2 are permanently configured as a stereo pair. The upper knob controls the level and the lower knob is the PAN control.This stereo aux send can be used for any type of stereo feed from the console, such as live two-track recording, stereo in-ear monitors, alternate stereo feed for broadcast and stereo signal processors. By properly using the pan control Auxes 1 and 2 can also be used as discrete mono Aux buses.

Aux 1/2 Level Channel Send level to the Aux 1/2 buses

Aux 1/2 PAN Stereo placement within the Aux 1/2 stereo pair

Aux Sends 3, 4, 5 & 6

Auxes 3, 4, 5, & 6 are configured as discrete mono aux sends.They are typically used to feed signal processors and for on-stage monitors.

AUX 3-4 PRE

AUX 3 and AUX 4 are post-fader

AUX 3 and AUX 4 are pre-fader

Auxes 3, 4, 5, & 6 Level Controls the send level to Auxes 3, 4, 5, & 6.

AUX 5-6 PRE

AUX 5 and AUX 6 are post fader.

AUX 5 and AUX 6 are pre-fader.

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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 Tape Solo OFFFrom Monitor 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 SUM Mono Monitor Output SectionMonitor Level Control 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
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