Crest Audio X 18R, X 20R Tape Line, Alt Out, Monitor Out, Solo Link, Audio Linking, AC Input

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Master Section 3

Rear Panel Features

Tape (Line) In

The Left and Right Tape inputs are available as both 1/4” TRS and RCA jacks. Both sets of inputs can be used simultaneously, (the signals will add together).The TRS jacks are balanced, +4 dBu inputs and the RCA jacks are unbalanced -10 dBV inputs.

Alt Out

The Left and Right ALT (Alternate) outputs are available as both 1/4” TRS and RCA jacks. Both sets of outputs can be used simultaneously.The TRS jacks are ground-compensated, impedance balanced, +4 dB outputs, while the RCA jacks are unbalanced -10 dBV outputs.

Monitor Out

The Left and Right Monitor outputs are available as both 1/4” TRS and RCA jacks. Both sets of outputs can be used simultaneously.The TRS jacks are ground-compensated, impedance balanced, +4 dB outputs, while the RCA jacks are unbalanced -10 dBV outputs.

Solo Link

When using multiple X-Series mixers together, the solo systems can be linked.This Solo Link is also com- patible with the X 18RM / X 20RM monitor mixers. A 5-pin, shielded DIN cable, wired pin-to-pin, can be used to link the Solo Audio and control signals between mixers.The “Slave” mixer has its own soloed signals appear in its own solo system, but these signals are also passed to the “Master” mixer where they also show up in the Master mixer solo system, added to any existing soloed signals, or triggering the Master solo if nothing else was present.The Master and Slave consoles are designated by the IN-to-OUT relation- ship between the Solo Link connectors.The Master mixer should have the DIN cable plugged into the IN jack, the other end of the cable should plug into the Slave’s OUT jack.

This linking can extend to additional mixers (no practical limit). Just keep plugging additional DIN cables between the added mixers.The global Master control will be the mixer with only one DIN cable plugged into the Link-IN jack.

NOTE 1:You should not plug the ends of the link-cable into both Link-IN jacks or both Link-OUT jacks across two mixers. No permanent damage will result, but there may be erratic solo behavior.

NOTE 2: Even though the DIN connector is the same type as used in MIDI systems, the Link connection is not MIDI and should not be connected to a MIDI device.

Audio Linking

The X-Series mixers are equipped with bus-in jacks on all the main mix buses (see earlier Rear-Panel detail) allow- ing the user to create a larger console out of multiple X 18R/20R, X 18RM / X 20RM monitor mixers or combina- tions of all types. Similar to the Solo-Link description,“Slave” mixers can be fed to “Master” mixers by using stan- dard, shielded audio cables to tie the Slave balanced outputs to the Master mixer’s bus inputs.The Slave outputs (still controlled by their our master faders) are fed to the Master mixer as a sub-mix. No additional inputs are taken up, the bus inputs allow for easy expansion.

AC Input

The X-Series mixers use an internal switching power supply which is capable of accepting a wide range of line volt- ages.This industry-standard IEC connector will mate up with any of the common IEC line cords.The incoming volt- age can be anywhere between 100 and 240 volts, +/- 10%.The AC mains frequency can be 50 Hz or 60 Hz.

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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