Crest Audio X 20R Owner's Manual

Owner’s Manual X-Series™ Rack Mount MixersX 18R™ / X 20R™

X 18R™ / X 20R™ Owner’s Manual p. 10X 18R/20R Block Diagram

How To Use This ManualFormatThis manual uses a format that is intended to be easy to read, yet technical enough for those who need to know all the det

Mono Input Channel1X 18R™ / X 20R™ Owner’s Manual ModuleBlock DiagramControlsp. 12

Front Panel FeaturesMono Input channel features are identical for both the X 18R and the X 20R. The X 18R has 14 Mono inputs and the X 20R has 12 Mono

Mono Input Channel1p. 14X 18R™ / X 20R™ Owner’s Manual ModuleBlock DiagramControls

Front Panel FeaturesEqualizer (EQ)Many audio signals coming into the console require some degree of corrective EQ in order to be part of a good-soundi

p. 16Mono Input Channel1X 18R™ / X 20R™ Owner’s Manual ModuleBlock DiagramControls

AUX Send FeaturesSix auxiliary Sends are available for creating individual output mixes. These can be used to drive effects processors, provide monit

p. 18Mono Input Channel1X 18R™ / X 20R™ Owner’s Manual ModuleControlsBlock Diagram

Bus Assignment FeaturesThe bus assignment section offers considerable flexibility for creating what eventually becomes the main output mix. Two stere

Mono Input Channel1X 18R™ / X 20R™ Owner’s Manual Rear PanelBlock DiagramConnectorsp. 20

Mono Input Channel1Rear Panel Features48 V Phantom Power+48 volts DC is applied equally (thru current-limiting resistors) to both pins 2 and 3 on the

Stereo Input Channel1p. 22X 18R™ / X 20R™ Owner’s Manual ModuleBlock DiagramControls

Front Panel FeaturesThe Stereo Input channel features are very similar to the Mono Input channels. The X 18R has 2 Stereo inputs, and the X 20R has an

Stereo Input Channel1p. 24X 18R™ / X 20R™ Owner’s Manual ModuleBlock DiagramControls

Front Panel FeaturesStereo EQThe Stereo Input channel has two parallel EQ circuits that are controlled by the same set of knobs.High Frequency—HF Boos

Stereo Input Channel2X 18R™ / X 20R™ Owner’s Manual ModuleBlock DiagramControlsp. 26

AUX Send FeaturesSix auxiliary sends are available for creating individual output mixes. These can be used to drive effects processors, provide monit

Stereo Input Channel2X 18R™ / X 20R™ Owner’s Manual ModuleBlock DiagramControlsp. 28

Bus Assignment FeaturesThe bus assignment section offers considerable flexibility for creating what eventually becomes the main output mix. Two stereo

1 Save the carton and packing mate-rials! Should you ever need to ship the unit, use only the original factory packing. For replacement packaging,

Stereo Input Channel2X 18R™ / X 20R™ Owner’s Manual Rear PanelBlock Diagramp. 30

Stereo Input Channel2Rear Panel Features+48 V On+48 volts DC is applied equally (thru current-limiting resistors) to pins 2 and 3 on both the L &

Master Section3X 18R™ / X 20R™ Owner’s Manual ModuleBlock DiagramControlsp. 32

Master Section3Front Panel FeaturesThe X 18R & X 20R have a comprehensive output section, including meters, master level controls and a flexible g

Master Section3X 18R™ / X 20R™ Owner’s Manual ModuleControlsBlock Diagramp. 34

Front Panel Features12 V Lamp JackA TNC jack is available for attaching a goose-neck lamp. The center connection is 12 Volts DC and the outer connecti

Master Section3X 18R™ / X 20R™ Owner’s Manual ModuleBlock DiagramControlsp. 36

Front Panel FeaturesAUX OUT 1-2 Level ControlThis is the master stereo output level control for the AUX 1/2 pair. Aux 1-2 AFLThis button assigns the A

Master section3X 18R™ / X 20R™ Owner’s Manual ModuleBlock DiagramControlsp. 38

Front Panel FeaturesGROUP Assignment SectionThe X 18R and X 20R offer a flexible group assignment arrangement. Each of the four Groups can be directly

Intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to c

Master Section3X 18R™ / X 20R™ Owner’s Manual Block DiagramControlsp. 40

Front Panel FeaturesMONITOR Output SectionThe X 18R and X 20R offer an extensive monitoring system which can be used for several alternate mix and re

Master Section3X 18R™ / X 20R™ Owner’s Manual Block DiagramControlsModulep. 42

Front Panel FeaturesMONITOR Output SectionSOURCE SELECTThe Source select portion of the Monitor system allows you to assign the primary mix buses to t

Master Section3X 18R™ / X 20R™ Owner’s Manual p. 44Block DiagramControlsModule

Front Panel FeaturesMono PK/SIG LEDGreen/Red - Flashes to indicate the Mono master level. Green during normal oper-ation and red to indicate overload

Master Section3X 18R™ / X 20R™ Owner’s Manual Block Diagram- GroupsMain OutputsBus InputsBlock Diagram- Main Mix Busesp. 46

Master Section3Rear Panel FeaturesLeft, Right and Mono Bus InputsThese three female XLRs are used to bring external signals directly into the Left, Ri

Master Section3X 18R™ / X 20R™ Owner’s Manual Rear PanelBlock Diagramp. 48

Master Section3Rear Panel FeaturesAux Insert 1 Thru 6This switching 1/4” TRS jack allows an external processor or EQ to be inserted into the signal pa

Important Safety Instructions WARNING: When using electrical products, basic cautions should always be followed, including the following:1. Read the

Master Section3X 18R™ / X 20R™ Owner’s Manual AC InletInformation And WarningsSolo Link ConnectorsTie Mixers TogetherBlock Diagram- Tape Input Block D

Master Section3Rear Panel FeaturesTape (Line) InThe Left and Right Tape inputs are available as both 1/4” TRS and RCA jacks. Both sets of inputs can b

Connector PinoutsLevels And InfoConnector PinoutsMain Panelp. 52Specifications4X 18R™ / X 20R™ Owner’s Manual

Specifications4 Specifications Frequency Response +0/-1 dB 20Hz-20kHz ref 1 kHz (any input to any output) THD any output < 0.01% THD 20

User Notes5X 18R™ / X 20R™ Owner’s Manual p. 54

User Notes5p. 55

X 18R™ / X 20R™ Owner’s Manual Version 1.0 August 2008Crest P/N 31700059Crest Audio5022 Hwy. 493 NorthMeridian, MS 39305www.crestaudio.com

Wichtige Sicherheitshinweise ACHTUNG: Beim Einsatz von Elektrogeräten müssen u.a. grundlegende Vorsichtsmaßnahmen befolgt werden:1. Lesen Sie sich d

Instructions Importantes De Securite ATTENTION: L’utilisation de tout appareil électrique doit être soumise aux precautions d’usage incluant:1. Lire

Instrucciones Importantes Para Su Seguridad CUIDADO: Cuando use productos electrónicos, debe tomar precauciones básicas, incluyendo las siguientes:1.

4123Master Section P .32Aux masters, groups, main outs, monitor section. Front panel controls and rear panel connectors.Stereo Input C