C E N T U RY S E R I E S GTx O WNER ’ S M ANUAL
Congratulations on your purchase of a Century Series console. All of us at Crest Audio in Paramus, New Jersey, USA, support your decision, knowing your console contains the finest combination of design and manufacture in the industry. While your new Century Series console is one of the most feature-packed available, great effort has been put into making it simple to operate. This manual explains the functions of your new console, how they operate and how they relate to each other.
TABLE GTx GTx OF CONTENTS Feature Overview 2 A brief description of the Vx design, features and functions. Wiring Conventions 3 Contains diagrams indicating how connectors for Crest consoles are wired. GTx Rear Panel Connections 4 Details the rear panel input and output connections to be made to the GTx console. GTx GTx GTx Power Supply 6 A brief description of the rack-mountable Century Series consoles power supply.
GTX CENTURY SERIES Feature Overview • Extensive Meter bridge provides signal level metering of LEFT, RIGHT, CENTER/MONO, SOLO LEFT, SOLO RIGHT, and 8 SUBGROUPS. The LEFT, RIGHT, CENTER/MONO and SOLO meters are of a larger size and are centered on the meter bridge. For 64 and 52 positions frames sizes only, metering is also provided for the 8 AUX SENDS. All level meters are of the mechanical moving coil type, are referenced to +4 dBu, and are illuminated by long-life LED’s.
CENTURY SERIES GTX Wiring Conventions Crest consoles are wired with connectors that are used throughout the professional audio industry.
CENTURY SERIES GTX REAR PANEL CONNECTIONS Input Module Connections Group Module Connections Direct Out Group Out GRP INS SEND INSERT SEND Insert Send Group Ins Send This 1/4-inch TRS jack allows for the group signal to be sent to an effect or signal processor. BAL INSERT RTN Bal Ins Return EFX RETURN This 1/4-inch balanced TRS jack allows for the return of the effected and/or processed group signal back into the associated group.
CENTURY SERIES GTX Master Module Connections Stereo Program In Matrix Out (A&B) This 1/4-inch jack accepts an unbalanced stereo line level signal. Polarity is as follows: Tip=Left, Ring=R, Sleeve=Common. These two XLR connectors deliver a balanced signal from the associated matrix sends. Oscillator / Pink Noise In Mono Out This XLR connector delivers a balanced post-fader signal containing all signals assigned to the Mono clean bus.
CENTURY SERIES GTX Century Series Console Power Supply Century Series consoles use a separate rack-mountable power supply which provides the specific voltages used by each console. Crest Consoles’ Century Series makes use of two different power supplies. All frame sizes (44, 52, 64) of the GTx console use the Model XCVA06 Power Supply.
CENTURY SERIES GTX Power Connections The connections to and from the power supply vary depending on your specific configuration. Before setting up the console, always check to make sure the AC voltage marked on the power supply agrees with the local supply. Always connect the console to the power supply before switching on the power supply. Do not run the power supply if it is not connected to the console.
CENTURY SERIES GTX System Connections The console is the hub of a sound system. Because it controls most of the variables within a system, proper connection and component relationships are vital to assure accurate operation and results. The following diagrams illustrate conventional system connections.
CENTURY SERIES GTX 8001 Professional Power Amplifier Clip/Limit Signal Temp/DC Active -6 -10 -6 -10 -3 -15 -3 -15 -1 -30 -80 -1 -30 -80 0dB Ch A 0dB Ch B Local Monitor L Local Monitor R 7001 Professional Power Amplifier Clip/Limit Signal Temp/DC Active -6 -10 -3 -6 -10 -15 -3 -15 -1 -30 -80 0dB Ch A -1 -30 -80 0dB Ch B Center Out From Local Monitor Out Left Out Right Out 8001 Professional Power Amplifier 8001 Professional Power Amplifier C ENTURY Clip/Limit Clip/Limit
CENTURY SERIES GTX 8 9 1 0 +48V 4 10 5 3 4 6 3 7 2 LINE 8 9 1 PAD 0 10 GAIN 40 GTx Input Module 7 3 2 PRE 30 PRE 50 20 70 4 5 150 40 7 2 8 1 300 20 4 5 7 2 HPF 8 1 4 5 HF 3 7 8 1 9 4 1.
CENTURY SERIES EQ IN Switch Inserts the EQ section into the input channel (post insert, pre fader). An associated green LED illuminates when the switch is down. AUX SENDS 1&2 and 3&4 Individual Level Controls Adjusts signal level sent to respective Aux buses. The signal source for these mixes may be selected pre or post fader by an associated switch.
CENTURY SERIES GTX 3 7 2 STEREO — 10 0 +48V 4 5 7 3 8 9 1 0 PAD 40 3 4 6 2 LINE GTx Stereo Input Module 8 9 1 10 GAIN PRE 50 PRE 48V Phantom Power Switch 30 20 4 70 80 20 9 10 0 4 5 7 2 8 1 9 Ø 4 7 9 4 HF 16 10 8K 12K 5 8 6 3 7 2 1 8 9 0 6K 16K STEREO – O + 8 AUX SENDS 8 BAL WIDTH 16 MF 16 400 1 250 MUTE 8K 300 8 LF M 8 LR P A N 1 2 3 4 5 6 7 8 16 150 300 100 6 40 1K EQ IN Adjustable High Pass Filter For both Left an
CENTURY SERIES GTX PRE/POST Switch (1&2 / 3&4) PFL Switch Selects the Aux 1&2 and Aux 3&4 signal sources between post and pre-fader positions. Samples the channel’s signal pre-fader and allows for monitoring within the master section of the console. This signal is not affected by the Mute Switch. When depressed, the signal level can be seen on the Solo meters, and heard via the mixer’s headphone or local monitor output. When this PFL Switch is depressed, the channel PFL LED indicator illuminates.
CENTURY SERIES GTX 3 7 2 GROUP — 8 9 1 10 0 PAN EFFECTS ASSIGNMENT L C R P A N M LR 4 5 A 6 3 7 2 1 2 3 4 5 6 8 1 7 9 4 8 10 0 5 6 B 3 7 2 9 7 8 9 10 0 10 0 MATRIX 4 5 LEV 6 3 2 1 8 1 4 5 MUTE GAIN 6 PFL 3 7 2 1 8 9 PEAK 10 0 SIG – O + HF 8 EFX RETURN 8 PAN 16 16 – O + LF 8 8 MUTE 16 4 16 5 1 2 6 3 7 2 MONO 8 9 1 0 L-R 10 LCR 5•6 Matrix Post Fader Reverse PRE 7•8 4 5 3 4 6 3 PFL 7 2 8 9 1 0 PEAK SIG 10 10 PAN
CENTURY SERIES GTX GTx Group Modules Effects (EFX) Return Level The Group Module is where input signals are combined and configured for grouped output; effects & aux assignment/routing are also accomplished here. Fully loaded GTx consoles have eight group modules. Group number is indicated on PFL switch. Adjusts the final effect return signal level. Group Meter Located on the meter bridge, it indicates the post-fader output level of the group.
CENTURY SERIES GTX 4 MATRIX — 5 7 8 1 9 0 +9 +6 4 10 5 7 2 8 1 0 9 0 -3 4 10 5 7 2 -9 8 1 9 0 -12 4 -15 10 5 7 2 8 1 9 0 4 5 1 6 3 7 2 9 4 4 5 2 6 3 7 2 7 8 1 9 0 9 0 4 10 10 5 7 2 8 1 9 0 MAINS LEFT 4 5 6 3 7 2 4 4 5 6 9 2 4 5 7 8 1 9 0 9 8 6 3 2 8 1 10 0 7 10 10 0 4 8 1 RIGHT 7 6 7 10 3 5 3 9 0 10 2 8 1 6 6 3 MATRIX AUX IN 5 6 2 8 1 5 3 10 0 10 GROUPS 1-4 GROUPS 5-8 8 1 4 6 3 -18 3 6
CENTURY SERIES GTX Matrix Module PEAK LED Indicator The Matrix module allows the creation of an independent mix using the Main outputs and an external inputs as signal sources. Illuminates RED when any of the points monitored come within 3db of the clipping point. Signal is sampled after the summing stage and after the fader. This LED also serves as a PFL ON indicator, but at a much lower intensity than when it is used to indicate clipping. Matrix Meter Shows output level of matrix module, 0dB=+4dBu.
CENTURY SERIES GTX L R PFL RIGHT — AUX LEFT — AUX AFL ON MASTER — MONO — TB MIC 5 5 6 3 8 1 +20 ADDITIONAL JACKS LOCATED BELOW ARMREST 10 4 5 6 3 1 +24 0 10 4 5 6 3 •4 5 •6 8 5 7 7 •8 8 1 9 MATRIX 9 0 10 LEV 6 2 8 0 4 3 7 1 9 10 1 •2 8 2 8 AUX STEREO PROGRAM IN 9 3 7 0 +48 7 1 6 2 7 5 6 2 9 0 4 3 7 2 LAMP DIM DC POWER GROUPS PEAK SIG 4 -20 AFL ON 10 A AFL5 AFL7 1 •2 AFL6 AFL8 3 •4 B PFL ON HEADPHONES 4 5 6 3 A 7 2 10 4 5 6
CENTURY SERIES GTx Master Section The master section is the control center for the GTx console. Monitoring, talkback, PFL, Stereo Program In, Master Aux & Matrix, L-C-R, internal oscillator and Scene Muting functions are all controlled here. Lamp Dim Control Controls the intensity of the lighting devices plugged into the XLR sockets on the back of the meter bridge. Talkback Mic Input Allows for a microphone to be plugged in for use with the talkback system.
GTX L&R Mono Assignment Switches Assign the Left and Right signals to the Mono output. L/R/Mono Matrix Post Switches Switches the Left, Right and Mono matrix feed signals between pre and post-fader. L/R/Mono PFL Switches Allow for Pre-Fader Listening of the Left, Right and Mono signals respectively. L/R/Mono Peak & Signal LED’s The red LED indicates that the signal is within 3dB of the clipping point. The green LED constantly displays the level of signal activity in the mix bus by varying in intensity.
CENTURY SERIES GTX GTx Meter Bridge - 52 & 64 Frame Models GROUPS 1 -20 -5 -3 -10 -7 -1 0 +1 2 +2 +3 -20 -5 -3 -10 -7 -1 0 +1 3 +2 +3 -20 -5 -3 -10 -7 -1 0 +1 4 +2 +3 -20 -5 -3 -10 -7 -1 0 +1 AUXES 5 +2 +3 -20 -5 -3 -10 -7 -1 0 +1 6 +2 +3 -20 -5 -3 -10 -7 -1 0 +1 7 +2 +3 -20 -5 -3 -10 -7 -1 0 +1 8 +2 +3 -20 -5 -3 -10 -7 1 -1 0 +1 +2 +3 -20 Level Level Level Level Level Level Level -5 -3 -10 -7 -1 0 +1 +2 +3 -20 -5 -3 -10 -7 -1 0 +1 +2 +3 -20 -5 -3 -10 -7 -1
GTx Appendix A Technical Information
CENTURY SERIES GTX General Specifications GTx Console Architect’s & Engineer’s Specifications The following are the technical specifications for the Century GTx console. Frequency Response +0.0, -0.5dB, 20Hz to 20 kHz (referenced to 1kHz) Total Harmonic Distortion Mic input to Group output 20Hz to 20 kHz at +15dBu <0.
P XFORMER OPTION DUAL POT P PAD P 15dB PAD S LINE LED INPUT PREAMP GAIN 20 - 70DB AMP HPF Century GTx Block Diagram OSC IN EXT TB IN TB MIC (FRONT) TB MIC (TOP PANEL) PHONES (FRONT) PHONES (TOP PANEL) LOCAL MON RIGHT SWITCH POST PRE LOCAL MON LEFT MATRIX B BAL OUT INSERT MATRIX A BAL OUT INSERT LEGENDS INSERT PRE-AMP BAL DRIVER HPF 20 - 400HZ PIN 2 HOT ON ALL XLRS TIP IS SEND, RING RETURN ON ALL SINGLE-JACK INSERTS USER OPTIONS IMPLEMENTED WITH REMOVABLE SHUNTS ROTARY POT
CENTURY SERIES GTX Side Dimensions All information per Crest Consoles Engineering, May 5, 1997 30.21"/767mm m / 791m 2mm 1.25"/3 31.14" 9mm & /1 T, .75" HEIGH 83 19" / 4 KNOB S CROS ORT A SUPP EA IS R THIS A MENDED M RECO m / 60m 2.375" 35° mm The following diagram illustrates the depth and height dimensions (from the side) for all Century GTx consoles. 4.5625" 116mm 1.30"/ 33mm 4.8125" 122mm 2.25"/57mm 24.75" / 629mm DO NOT APPLY ANY LOADS TO METER BRIDGE ASSEMBLY .
GTX CENTURY SERIES RearViews & Dimensions INSERT A MONO INSERT MONO OUT RIGHT INSERT RIGHT OUT LEFT INSERT LEFT OUT GRP INS SEND GROUP OUT GRP INS SEND GROUP OUT GRP INS SEND GROUP OUT AUX 1 OUT BUS IN +4 BUS IN +4 BAL INSERT RTN AUX 3 OUT +4 BAL INSERT RTN MONITOR L OUT AUX 2 OUT BUS IN BAL INSERT RTN MATRIX B OUT AUX 5 OUT -10 AUX 4 OUT AUX 6 OUT EFX RETURN AUX 7 OUT -10 MONITOR R OUT AUX 8 OUT EFX RETURN INSERT B OSC/PINK IN STR PGM IN -10 EXT TB IN Master EXT
CENTURY SERIES GTX GTx USER-OPTIONS GTx consoles are shipped having standard configuration unless specified at time of order. These are ways that the console configuration may be varied after manufacture. The items listed are internal options selected by gold jumper links. Default is marked with a line on the board and is usually pins 1&2 of the three pin header. In addition there are links for module function assignment. Take care to not disturb these when using USER OPTION links.
CENTURY SERIES GTX Console Disassembly Though you shouldn’t have to disassemble the console, it is necessary to remove modules to change the jumper and switch settings associated with the internally selectable options. The following steps detail the tasks involved when taking the console apart. ONE • Open the armrest. Opening the Armrest To properly remove one or many modules, the black painted armrest must first be opened.
GTx Appendix B Glossary
GTX Glossary 100mm Fader See Fader 48 Volt Phantom Power This switch turns on the +48V DC used to power some microphones. Always operate the 48V Phantom Power switch with the input channel muted. See XLR Microphone Input for more information. 5-Segment LED Array (Input Meter) This LED array (located next to each input module fader) provides visual monitoring of the input module signal, post EQ, pre fader. (On the GTx Stereo Input module, there are two 5segment LED arrays.
CENTURY SERIES GTX Bus Assignment Switches EQ In Switch Wherever these switches occur, they connect signals to any or all of the following buses: Group buses, even/odd Group buses, Left bus, Center (Mono) bus, and Right bus. The following list shows the various Bus Assignment switches and their effect upon bus assignment: This GTx input module (and stereo input module) switch, when pressed, inserts the EQ section into the signal path and illuminates a green LED to the left of the switch.
CENTURY SERIES GTX Fader Reverse Switch This switch swaps roles between the Effect Return Level pot and the Group Fader. When pressed, this switch causes the Effect Return Level to be controlled by the group fader, and the group level to be controlled by the Effect Return Level pot. If you want fader control when setting effect returns, this switch is particularly helpful. A red LED indicator is provided to the left of the switch and illuminates when the switch is pressed (reverse mode).
CENTURY SERIES below the dialed-in frequency. A peak setting would be used to boost or cut the specific dialed-in frequency. Line Input Jack This is a balanced, high impedance input which is designed to accept both balanced and unbalanced line level inputs. To select this input source, press the front panel LINE switch. See the Connections and Conventions section for specific information on plug polarity and signal assignments.
CENTURY SERIES GTX assign level, providing maximum level when in the center position and continuously decreasing in level when turned to the left or right. This makes true LEFT-CENTER-RIGHT (LC-R) panning possible. (See also BUS ASSIGNMENT, PAN Switch) PAN Switch With the PAN switch up, groups can be individually selected and are unaffected by the PAN control.
CENTURY SERIES GTX Stereo Program In XLR Microphone Input Connector The Stereo Program In section (on the GTx Master section) controls the way in which the Stereo Program In signal is routed through the console. Controls for gain, HF/LF EQ, bus assignment (Mono, L/R, Aux 1/2, Aux 3/4, and Matrix A/B buses), balance, level, muting, and PFL are included. Red Peak and green Signal Present LED’s are located next to the PFL switch.
GTx Appendix C Schematics SCHEMATIC NAME # NOTES STANDARD INPUT CONNECTOR PCB 1 GTx INPUT CONNECTOR PCB STANDARD INPUT MAIN PCB 2 GTx INPUT MAIN PCB LCR SUB PCB 3 LCRSUB01 STEREO INPUT CONNECTOR PCB 4 GTx STEREO INPUT CONNECTOR PCB STEREO INPUT MAIN PCB 5 GTx STEREO INPUT MAIN PCB GROUP CONNECTOR PCB 6 GTx GROUP CONNECTOR PCB GROUP MAIN PCB 7 GTx GROUP MAIN PCB MODULES GTx LCR SUB PCB L / R CONNECTOR PCB 8 GTx LEFT/RIGHT CONNECTOR PCB L / R MAIN PCB 9 GTx LEFT/RIGHT MAIN PCB
Crest Audio Inc. 100 Eisenhower Dr., Paramus NJ 07652 USA TEL: 201.909.8700 FAX: 201.909.8744 http://www.crestaudio.com Printed in USA *D7000003* GTx Owner's Manual Copyright © 1997 Crest Audio Inc. v 2.
