Crest Audio GTX Owner's Manual
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Crest Audio GTX Owner's Manual

Century series
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E R I E S
E N T U RY
GTx
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M
WNER
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ANUAL

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  • Page 1 E R I E S E N T U RY ’ WNER ANUAL...
  • Page 2 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.

  • Page 3: Table Of Contents

    Contains diagrams indicating how connectors for Crest consoles are wired. Rear Panel Connections Details the rear panel input and output connections to be made to the GTx console. Power Supply A brief description of the rack-mountable Century Series consoles power supply.

  • Page 4: Gtx Feature Overview

    Aux sends used as mon- itors. When muted, PFL circuitry, Peak, Level, and Dynamic Signal Present LED indicators remain fully operational. • Twin power supply capability with automatic changeover backup for uncompromised reliability. Second power supply optional.

  • Page 5: Input Xlr

    ENTURY ERIES Crest consoles are wired with connectors that are used throughout the professional audio industry. Wiring is as follows: INPUT XLR TIP - POSITIVE RING - NEGATIVE SLEEVE - GROUND Standard TRS (Tip - Ring - Sleeve) 1/4" Plug Input / Output OUTPUT XLR PIN 1...

  • Page 6: Rear Panel Connections

    REAR PANEL CONNECTIONS Input Module Connections Direct Out This 1/4-inch balanced TRS jack delivers the direct output signal (post fader & post mute) from the associated input channel. Insert Send This 1/4-inch jack is used for sending a post-input preamp, post Hi Pass Filter, pre-EQ signal to an outboard processor.
  • Page 7 ENTURY ERIES Master Module Connections Matrix Out (A&B) These two XLR connectors deliver a balanced signal from the associated matrix sends. Mono Out This XLR connector delivers a balanced post-fader signal con- taining all signals assigned to the Mono clean bus. Right Out This XLR connector delivers a balanced post-fader signal con- taining all signals assigned to the right output.

  • Page 8: Power Requirements

    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.

  • Page 9: Interface Cable

    Console Cooling A cooling fan configuration is included in all GTx consoles. Two fans (one at each end of the console) draw air in through the sides of the chassis (under the sidebars). Air is distributed through the chassis via a “vortex pan”, then proceeds up through the console modules, where the heated air exits the console chassis.

  • Page 10: Gtx System Connections

    System Connections The console is the hub of a sound system. Because it controls most of the variables within a system, proper connection and com- ponent relationships are vital to assure accurate operation and results. The following diagrams illustrate conventional system con- nections.
  • Page 11 ENTURY ERIES Left Out 8001 Professional Power Amplifier Clip/Limit Signal Temp/DC Active Ch A Ch B Input Channel Direct Outs feed to remote mixer/recorder Output Connections 8001 Professional Power Amplifier Clip/Limit Signal Temp/DC Active Ch A Ch B Local Monitor L Local Monitor R 7001 Professional Power Amplifier...

  • Page 12: Gtx Input Module

    GTx Input Module The input module is the main method by which input signals are brought into the console. The GTx input module brings several new features to the Century Series, including a 5-seg- ment LED signal meter array, Adjustable Hi Pass filter, Insert switch, four-band sweep EQ (with selectable peak/shelving on HF &...

  • Page 13: Aux Sends

    ENTURY ERIES 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.

  • Page 14: Gtx Stereo Input Module

    STEREO AUX SENDS GTx Stereo Input Module The GTx Stereo Input module is essentially two GTx Input modules packaged to fit into a one-module space. This mod- ule is very useful for accepting remote feeds, effects outputs and other signals that require stereo handling.
  • Page 15 ENTURY ERIES PRE/POST Switch (1&2 / 3&4) Selects the Aux 1&2 and Aux 3&4 signal sources between post and pre-fader positions. PRE/POST Switch (5&6) Selects the Aux 5&6 signal sources between post and pre-fader positions. AUX 5 - 8 Individual Level Controls Adjusts audio level of a mix for use as a monitor or an effect send.
  • Page 16 GROUP — EFFECTS ASSIGNMENT MATRIX MUTE GAIN PEAK – O + EFX RETURN – O + MUTE MONO 5•6 Matrix Post Fader Reverse 7•8 PEAK EFFECTS ASSIGNMENT SAFE SCENE MUTE RETURN A - D MUTE PEAK EFX RETURN ENTURY ERIES...

  • Page 17: Gtx Group Modules

    GTx Group Modules The Group Module is where input signals are combined and configured for grouped output; effects & aux assignment/rout- ing are also accomplished here. Fully loaded GTx consoles have eight group modules. Group number is indicated on PFL switch.
  • Page 18 MATRIX — GROUPS 1-4 GROUPS 5-8 MATRIX AUX IN MAINS LEFT RIGHT MONO MUTE ENABLE PGM IN LEFT MONO RIGHT PEAK GROUPS 1-4 GROUPS 5-8 ENTURY ERIES...

  • Page 19: Matrix Module

    ENTURY ERIES Matrix Module The Matrix module allows the creation of an independent mix using the Main outputs and an external inputs as signal sources. Matrix Meter Shows output level of matrix module, 0dB=+4dBu. Matrix AUX IN Controls Controls level of external balanced input signals. L &...
  • Page 20 LEFT RIGHT MONO — — — LAMP DIM PFL ON MATRIX MATRIX MATRIX AUX MUTE AUX MUTE ACTIVE ACTIVE - 0 + - 0 + MUTES MUTES AFL1 AFL3 AFL2 AFL4 AFL ON AFL ON PEAK STEREO PROGRAM IN AFL ON MASTER —...

  • Page 21: Gtx Master Section

    ENTURY ERIES 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.
  • Page 22 ENTURY ERIES 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 sig- nals respectively.

  • Page 23: Gtx Meter Bridge

    ENTURY ERIES GTx Meter Bridge - 52 & 64 Frame Models GROUPS -5 -3 -5 -3 -5 -3 -5 -3 -5 -3 -5 -3 -5 -3 -10 -7 -10 -7 -10 -7 -10 -7 -10 -7 -10 -7 -10 -7...

  • Page 25: Technical Information

    Appendix A Technical Information...
  • Page 26 - 80 dBu side of the armrest and a second pair on the top panel of the console. The GTx live - 80 dBu sound console shall feature a defeatable Left-Center-Right (LCR) panning system.
  • Page 27 ENTURY ERIES PPENDIX...
  • Page 28 ENTURY ERIES PPENDIX...
  • Page 29 ENTURY ERIES RearViews & Dimensions .75in. 19mm Size 57.55" 55.80" 54.25" 67.15" 65.40" 63.85" 81.55" 79.80" 78.25" Size 44 1462mm 1417mm 1378mm 52 1706mm 1661mm 1622mm 64 2071mm 2027mm 1988mm Crest Consoles Engineering, May 5, 1997 1.5in./38mm PPENDIX...
  • Page 30 GTx USER-OPTIONS GTx consoles are shipped having standard configuration unless specified at time of order. These are ways that the console config- uration 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.
  • Page 31 ENTURY ERIES Console Disassembly Though you shouldn’t have to disassemble the console, it is necessary to remove modules to change the jumper and switch set- tings associated with the internally selectable options. The following steps detail the tasks involved when taking the console apart.
  • Page 33 Appendix B Glossary...
  • Page 34 This LED array (located next to each input module fader) pro- vides visual monitoring of the input module signal, post EQ, pre fader. (On the GTx Stereo Input module, there are two 5- segment LED arrays.) There are three green LED’s (SIGnal present, -6, 0) one yellow LED (+8) and one red LED (PK ‘peak’...
  • Page 35 EQ sections, with fixed EQ controls. External Talkback Inputs Located at the top of the GTx Master section and under the front right console armrest, the External Talkback Inputs per- mit connection of talkback microphones to be used with talk- back functions.
  • Page 36 Insert Switch w/LED This switch, located on the GTX Input (and GTX Stereo Input) modules, introduces into the signal path any processing that is patched into the Insert Send and Balanced Insert Return jacks on the rear panel.
  • Page 37 This button switches the group, L, R or Mono matrix send between pre and post fader. Up position is pre. Meter Bridge The GTx 52 and 64-frame consoles include 21 mechanical moving-magnet type indicators (44 frame: 13 meters) which show the output levels. These indicators are VU-type and are calibrated during manufacturing to 0 = +4dBu, 1.23V RMS...
  • Page 38 Polarity Reverse Switch This post insert return, pre-EQ switch reverses the phase of the line and microphone input signals in the GTx input modules (on the stereo input module, this switch acts upon one channel only). This feature can be used to adjust phase cancellation between microphones when more than one microphone is pick- ing up the same acoustical signal.
  • Page 39 ENTURY ERIES Stereo Program In The Stereo Program In section (on the GTx Master section) controls the way in which the Stereo Program In signal is rout- ed 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.

  • Page 41: Meter Bridge

    Appendix C Schematics NOTES GTx INPUT CONNECTOR PCB GTx INPUT MAIN PCB LCRSUB01 GTx STEREO INPUT CONNECTOR PCB GTx STEREO INPUT MAIN PCB GTx GROUP CONNECTOR PCB GTx GROUP MAIN PCB GTx LEFT/RIGHT CONNECTOR PCB GTx LEFT/RIGHT MAIN PCB GTx MONO CONNECTOR PCB...
  • Page 42 Crest Audio Inc. 100 Eisenhower Dr., Paramus NJ 07652 USA : 201.909.8700 : 201.909.8744 http://www.crestaudio.com Printed in USA *D7000003* GTx Owner's Manual Copyright © 1997 Crest Audio Inc. v 2.3 11/3/97 D7000003...

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