Crest audio GTX Technical Data Sheet

CENTURY SERIES

Technical Data

GTx

Sheet

TECHNICAL SPECIFICATIONS

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 <0.01%

NOISE (22Hz to 22kHz)

Mic EIN -129 dBu
Mix Bus Output Noise (20 ch routed) -80 dBu
Aux Bus Output Noise (20 ch routed) -80 dBu

CROSSTALK (Measured at 1kHz)

Channel Mute >102 dB
Channel Fader Attenuation >96 dB
Channel Routing >85 dB
Channel Aux Send Attenuation >93 dB

INPUT/OUTPUT IMPEDANCES

Mic Input 4kΩ balanced
Line Input >10kΩ balanced
Outputs 140Ω balanced

INPUT/OUTPUT LEVELS (0VU = +4 dBu, 1.23V RMS)

Mic Input Sensitivity +4 to -62 dBu
Line Input Sensitivity +12 to -38 dBu
Input Insertion Point Level +4 dBu
Output Insertion Point Level -2 dBu
Nominal Output Level +4 dBu
Maximum Balanced Output Level +28 dBu

Load support recommendations have been
supplied to assist in road case construction.

All specifications subject to change without notice. © 1997 Crest Audio Inc.

The GTx live sound console shall be constructed in modular fashion and be housed in a steel frame with molded plastic side panels. The console shall be usable in a 'tabletop' set up or with optional
stands. Standard output module configuration will occupy 12 module positions including a standard 2 channel output matrix system. The console shall be black with white labeling and utilize XLR light­ing device connectors with dimmer system. A meter bridge shall be included that monitors console signals using mechanical meters with solid state illumination. Signals to be monitored include Left
output, Right output, Mono (Center) output, Stereo PFL signal and 8 group output signals. On 52 and 64 module position frames, 8 auxiliary output meters are also to be provided. The console shall
have a pair of XLR talkback mic and headphone jack connectors, with one set being located beneath the far right side of the armrest and a second pair on the top panel of the console. The GTx live
sound console shall feature a defeatable Left-Center-Right (LCR) panning system. On each input channel: All microphone inputs shall be electronically balanced and accessed via 3-pin XLR connectors
and have an EIN of -129 dBm. All input channel line inputs shall be electronically balanced and accessed via 1/4" TRS jacks. Input module insert and return points shall be via individual 1/4" jacks and
controlled by a front panel switch with LED. Additional input controls include: a +48 volt phantom power switch, a -15 dB pad switch (-20 dB for stereo input channels), adjustable high pass filter con­trol (20-400Hz) with on switch and LED, a polarity reverse switch with LED, and 4-band sweep EQ (LF- 40-800Hz, LMF- 100Hz-2kHz, HMF- 400Hz-8kHz, HF- 1.5k-20kHz) with peak/shelve switches on
the high and low EQ bands, switchable bandwidth on low-mid and high-mid bands, and an EQ In switch with LED. Each input channel shall also have a FET controlled (10 millisecond ramp) mute switch
with LED, affecting all assigned outputs including auxiliary sends. Assignment switching is provided to the following output sections: Left/Right, Mono, Subgroup 1, Subgroup 2, Subgroup 3, Subgroup
4, Subgroup 5, Subgroup 6, Subgroup 7 and Subgroup 8. An LCR switch reconfigures the Left/Right and Mono assignment system to a true Left/Center/Right mix system. A Pan On switch allows con­ventional panning between any odd and even subgroup assignment regardless of the position of the LCR configuration switch. A 5-segment signal level LED indicator is provided to monitor signal lev­els, and a multiple sample point peak LED is provided to monitor potential overload situations. Input modules also include a PFL switch with LED indicator, 4 scene mute preset switches, scene mute
safe switch with LED, and a 100mm long throw fader. Each input channel shall have eight auxiliary send level controls. The aux send section shall include three pre/post fader switches: one for auxes 1­4, one for 5&6, and one for 7&8. The aux sends shall be internally selectable pre or post EQ and pre or post mute. There shall be an Aux 8 direct switch that shall allow the Aux 8 rotary knob to direct­ly control the output of the 1/4" direct output connector. Optional stereo input modules will be available. The console shall be configured in an eight bus arrangement. The effect return section of each
group module shall have a gain control, a two-band fixed EQ, sub-group assignment switches, L/R and Mono assignment switches with an LCR configuration switch, aux send level controls for Auxes
1 through 4 with 1-2 switchable to 5-6, and 3-4 switchable to 7-8, a pan control, a level control, a dynamic signal present LED and peak LED, and a PFL switch. 4 scene mute switches (A-D) with scene
mute safe switch with LED will be available on each return section. The group mix section of the module shall have a pan control, a FET controlled (10 millisecond ramp) mute switch with LED, assign­ment switches for Left/Right and Mono with an LCR configuration switch. Each group mix section will have balanced (XLR) group insert connections. There will be a send level control for two Matrix
mixes (A & B) on each group module with source selection matrix post fader switch. It shall also have a fader reverse switch with LED that allows the group fader to control the level of the modules
effect return. A PFL switch, dynamic signal present LED and peak LED, and a 100mm long throw fader shall also be provided on the group module. The master section shall have the following features:
eight aux master controls with associated AFL switches and eight aux scene mute switches with LED's, a 100mm long throw fader for each of the Left, Right, and Mono (Center) master outputs, bal­anced (XLR) insert connections for Left, Right, and Mono (Center) master outputs, an assignable comprehensive talkback system, monitor control (with balanced XLR output), stereo program input sec­tion with Stereo EQ, lamp dimming control, and four+two aux scene mute master switch section, each with LED. Two master matrix output sections include level control, Mute switch with LED, AFL
monitor switch and peak and signal present LED indicators. The two Matrix output signals are to be derived from the consoles group output signals, left, right, and mono output signals. Additional
matrix output modules may be installed in the console frame if unused space is available. The standard power supply shall be housed in a 14 ga. steel chassis that shall occupy two 19" rack spaces. The
power supply shall have the ability to be daisy-chained to additional power supplies to provide a fail-safe operating environment. Connection of two or more power supplies shall not require addition­al interface hardware other than interface cable. The live sound console shall be: the Crest Audio Century GTx.

Crest Audio specifications are available in electronic form on our website: http://www.crestaudio.com

Architect’s & Engineer’s Specifications - Century GTx

Frame Size Imperial Metric Weight

44 58” x 30.21” x 12.75” 1460 x 767 x 324mm 230/104.4
52 67” x 30.21” x 12.75” 1700 x 767 x 324mm 275/124.9
64 82” x 30.21” x 12.75” 2070 x 767 x 324mm 295/133.9

1.30"/ 33mm

4.8125"
122mm

4.5625"
116mm

stereo input modules and additional matrix modules.

Crest Consoles Engineering,

2.375"/ 60mm

2.25"/57mm

CONFIGURATIONS

Century GTx Consoles are available

in the following eight-bus configurations:

32 INPUTS (44 FRAME)
40 INPUTS (52 FRAME)
52 INPUTS (64 FRAME)

All Century GTx Consoles are available with

DIMENSIONS

The following table contains dimensions

for all Century GTx consoles. (L x W x H)

All information per

May 5, 1997

19" / 483mm

KNOB HEIGHT, .75"/19mm & 1.25"/32mm

SUPPORT ACROSS

THIS AREA IS

RECOMMENDED

35°

30.21"/767mm

31.14" / 791mm

SUPPORT ACROSS THIS DIMENSION IS RECOMMENDED

24.75" / 629mm

28.0" / 711mm

29.5625" / 751mm

DO NOT APPLY ANY
LOADS TO METER
BRIDGE ASSEMBLY

.65"/17mm

Net lbs./kg

12.6875"
322mm

12.5625"
319mm

5.125"

130mm

10°

For use on an 11 inch x 17 inch sheet, print this page out at 130%

Century GTx Console Block Diagram

Crest Audio reserves the right to make changes or improvements

in manufacturing or design which may affect specifications.

1KHZ

OSC

PIN 2 HOT ON ALL XLRS

TIP IS SEND, RING RETURN ON ALL SINGLE-JACK INSERTS

USER OPTIONS IMPLEMENTED WITH REMOVABLE SHUNTS

POT PAD LED AMP

POT

ROTARY

DUAL

DIRECT OUT

BAL INSERT RTN

INSERT SEND

P

PREAMP

LEGENDS

BAL DRIVER

SWITCH

OPTION

USER

PRE-AMP

PRE

POST

METER

SELECT

OSC IN

EXT TB IN

(FRONT)

TB MIC

MIC PRE

(TOP PANEL)

TB MIC

(TOP PANEL)

MON RIGHT

LOCAL

MON LEFT

LOCAL

PHONES

PHONES

(FRONT)

+48v

OPTION

XFORMER

BAL OUT

MATRIX B

INSERT

OPTION

XFORMER

BAL OUT

MATRIX A

INSERT

FADER

PHONES

LEVEL

OSC

ON

EXT TB

OUT

OUT

MUTE MASTERS

AUX

B

C

D

A

EXT TB

SCENE

LEVEL

TB ASSIGN

SWITCHES

EXT TB

IN

TB

DIM

TB ON

MONO L-R 1-2 3-4 5-6 7-8GRPS

AUXES

MATRIX

AB

RIGHT

LEFT

PFL MIX R

MUTE

MONO

MON LEVEL

LOCAL

DEFEAT

PFL

D

D

PFL

SW

PFL DC

PFL MIX L

∑

∑

LEVEL

TO L & R METERS

MATRIX B

PEAK

MATRIX B

MUTE

MIX AMP

PRESENT

MATRIX B

SIGNAL

MATRIX A

MUTE

MATRIX A

LEVEL

AFL

PRESENT

SIGNAL

PFL LEFT

PEAK

PFL DC

PFL RIGHT

∑

MIX AMP

MATRIX A

PFL RIGHT

PFL LEFT

PFL DC

∑

FET MUTE

FET DIM

GTx MASTER MODULE

DIRECT

AUX 8

AFL

8

M

D

PRE

7-8

1-4

5-6

1

567

234

PRE

PRE

AUX SENDS

EQ

SOURCE

SELECT

PRE

FDR

PRE SOURCE AMP

M

INPUT METER

+80-6SIG
PEAK

NO YES

MUTE ?

PRE

MUTE

SAFE

SCENE MUTES

ABCD

2 4 6 8LCR PAN

P

INPUT

M

+10

BAL LINE IN

S

HPF

LF L MID H MID HF

FOUR BAND EQ

QQ

PEAKPEAK

FADER AMP

BUS ASSIGN

& CONTROL

SWITCHES

BAL MIC IN

+48V

XFORMER

OPTION

15dB

PAD

P

LINE

20 - 70DB

GAIN

20 - 400HZ

HPF

INSERT

Ø

GTx INPUT MODULE

LEVEL

FREQ

EQ IN

PAN

PFL

PFL RIGHT

MONO L-R

PFL LEFT

PFL DC

1
3 5 7

AUX

3-4

DIMMER

LAMP

+20V -20V +48V +24V

*D3000003*

PFL

ON

100 Eisenhower Dr., Paramus NJ 07652 USA

TEL

: 201.909.8700

http://www.crestaudio.com

AUX

1-2

BLEND TO

AUXES

STATUS LEDS

RTN

PFL

SWITCHES

LEFT/RIGHT

LF HF

MONO L-R

STEREO RETURN

ASSIGN

1-2 3-4

AUX

MATRIX

A-B

MATRIX

SENDS

STEREO

MUTE

LEVEL

BAL

LF HF

∑∑

GAIN

RETURN

STEREO

RIBBON CABLES

MONO BAL

MIX AMP

∑

PFL RIGHT

PFL LEFT

PRESENT

SIGNAL

PEAK

MONO

MUTE

A

B

FADER AMP

MATRIX

POST

PRESENT

SIGNAL

PEAK

TO METER BRIDGE

INSERT

BAL OUT

MONO

OPTION

XFORMER

MIX AMP

AUX

NO YES

PFL DC

MUTE

AUX

CONTROL?

SCENE

AUX

PFL

1 OF 4 AUXES PER MODULE SHOWN

1-2, 5-6 ON LEFT, 3-4, 7-8 ON RIGHT

GTx MONO MODULE

MONO OUTPUT LEVEL

L (R) BAL

MIX AMP

OPTION

L (R)

XFORMER

∑

PFL RIGHT

PFL LEFT

PFL DC

PRESENT

SIGNAL

PEAK

PFL

MUTE

L (R)

FADER AMP

TO METER BRIDGE

INSERT

GTx LEFT (RIGHT) MODULE

PFL LEVEL

PFL

4

MUTE

3

EFX

AUX

7-8

A

EFX SCENE MUTES

B C D SAFE

PEAK

5-6

1

2

SENDS

AUX

AUX

PRE

M

∑

PFL RIGHT

PFL LEFT

PFL DC

M

AFL

FROM AUX 2

X-FEED

MONO

MATRIX

A

B

SENDS

MATRIX

POST

AUX OUTPUT LEVEL

L/R OUTPUT LEVEL

TO METER BRIDGE

TO METER BRIDGE

XFORMER

OPTION

BAL OUT

AUX

BAL OUT

AUX

PRESENT

SIGNAL

2 4 6 8LCR PAN

REVERSE

SWITCHES

FADER

EFFECTS RTN

BUS ASSIGN

& CONTROL

PAN

+10

M

LEVEL

EFX

EFX EQ

MONO L-R 1 3 5 7

HFLF GAIN

EFX RETURN

& CONTROL

SWITCHES

MATRIX

A

B

SENDS

MATRIX

POST

BUS IN

MONO L-R

BUS ASSIGN

GROUP

LCR

PAN

GROUP OUTPUT LEVEL

TO METER BRIDGE

PEAK

REVERSE

FADER

MIX AMP

GROUP

BAL

PRESENT

SIGNAL

M

FADER AMP

+10

BAL INSERT RTN

∑

INSERT SEND

PFL RIGHT

PFL LEFT

PFL DC

GROUP

PFL

GTx GROUP MODULE (1 OF 8)

GROUP

MUTE

XFORMER

OPTION

BAL OUT

GROUP

Printed in USA

FAX

Crest Audio Inc.

: 201.909.8744

v. 2.1 11/19/97