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. If properly cared for, your new console will provide you with trouble-free, sonically accurate mixing
clear into the next Century and beyond.
Please keep the following contact information on hand:
Crest Audio Customer Service Dept.
100 Eisenhower Drive
Paramus NJ 07652 USA
TEL 201.909.8700 FAX 201.909.8744
http://www.crestaudio.com
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
TABLE OF CONTENTS
Feature Overview2
A brief description of the Vx design, features and functions.
Mixing with VCA's3
Adapted from “Mixing with VCA's,” by Mark Smith, in LIVE SOUND! Magazine.
Wiring Conventions5
Contains diagrams indicating how connectors for Crest consoles are wired.
Rear Connections6
Details the rear panel input and output connections to be made to the Vx console.
Power Supply8
A brief description of the rack-mountable Century Series consoles power supply.
Power Connections9
A brief description of Crest console power connections.
Console Cooling9
A brief description of the dual-fan cooling setup.
System Connections10
Contains diagrams illustrating conventional system connections.
Input Module12
Profiles the Vx input module. The module and rear panel are illustrated, and described.
Stereo Input Module14
Profiles the Vx stereo input module. The module is illustrated, and described.
Optional Multi-Input Module17
Profiles this optional double-module, which provides four stereo inputs, summed together to
create a stereo sub-mix.
Group Module19
Profiles the Vx group module. The module is illustrated, and described.
Master Section21
Profiles the Vx master section. The modules are illustrated, and described.
Meter Bridge23
This section profiles the Vx meter bridge. Each type of meter is illustrated and described.
Special Facilities24
This section profiles Vx console expansion and LCR Panning
Technical InformationAppendix A
Includes dimensions, specifications, console access details,
user options, console block diagram, and rear panel layout.
SchematicsAppendix B
Lists available console and power supply schematics.
PAGE 1
VX
Feature Overview
The Century Series has the audio quality, features, and functions demanded by the modern music professional. The Vx is
the first Crest Console to use VCA's, includes all of the basic
features found in other Century Series consoles and adds an
extensive meter bridge and a set of advanced new features to
accommodate more demanding applications.
CENTURY SERIES
Vx features:
• Mixing flexibility via 8 conventional Audio Groups & 8
VCA Groups, permitting enhanced Mix Integrity, Wet / Dry
Blending, and True Post Effect Sends.
• 4 Scene Mutes, designed to mute both pre- and post-fader
input channel signals including those Aux sends used as monitors. When muted, PFL circuitry, Peak, Level, and Dynamic
Signal Present LED indicators remain fully operational..
• Comprehensive 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.
• 8 Matrix Outputs Standard, useful for the creation of independent mixes using the main outputs and External Input as
signal sources.
• Discreet bus assignments and L-C-R (Left-Center-Right)
panning. Input channels and Effects Returns incorporate an
uncompromised bus assignment section. Features include true
L-C-R panning, standard panning, clean mono bus, discrete
bus assigns, and panable stereo bus assigns.
• 8 Discrete Aux Sends, each with On/Off Control & Status
LED.
• Variable Hi-Pass filter on input channels allows for precise
control over a signal’s unwanted low frequency content.
• Channel inserts are implemented using separate 1/4" TRS
jacks for send and return. An insert switch with indicator LED
allows A/B comparisons and signal processor bypass.
• Switchable Q on Hi Mid and Lo Mid EQ bands adds more
flexibility to an EQ circuit that already offers four sweepable
bands and selectable peak/shelving on the Hi and Lo bands.
• Each input channel features a five-segment LED array,
including a signal present LED, three signal level LEDs and a
peak indicator.
• SSM/PMI high-quality preamplifiers on balanced microphone/line inputs for uncompromised audio quality and reliability. All IC’s within the audio path are socket mounted for
easy upgrade or service.
• 48 Volt switchable phantom power on all microphone inputs.
• Optional transformers available on all microphone inputs and
on Group, Left/Right, Mono, Aux, and Matrix outputs.
• Full function SOLO monitoring system with dedicated level
meters. User choice of PFL or AFL from any source, both in
stereo where appropriate.
• Standard frame sizes include 32, 44, 52, and 64 positions.
(20, 32, 40, and 52 inputs respectively). The Master section
occupies four positions and Groups occupy eight positions.
• Any frame size may be ordered short loaded for later expansion.
• Direct access to Group Mix buses allows expander mixers to
be easily patched into the console.
• Majority of audio Inputs and Outputs balanced on XLR connectors.
• Twin power supply capability with automatic changeover
backup for uncompromised reliability. Second power supply
optional.
• Optional Stereo Input modules available, useful for remote
feeds, effects returns, and other mic or line level signals requiring stereo handling.
• Comprehensive Talkback section allows access to all primary
console outputs. Additional access provided to an external
location such as an on-stage monitor mixer system. External
signals can also be assigned into the talkback system including
Oscillator and Pink Noise source inputs.
PAGE 2
CENTURY SERIES
Mixing with VCA's (adapted from Live Sound! magazine)
VX
An introduction to VCA's
A VCA (voltage controlled amplifier) uses a DC control voltage to attenuate or boost an audio signal. The VCA DOES NOThave Audio signal present in the fader. The fader only controls
the amount of voltage (level) an input can have to a mix buss
or summing amp. To get the input back out of the console, the
input needs to be assigned to the Stereo Mix Buss or an Audio
Group. Assigning a fader only to a VCA will not allow an
input to get out of the console.
Audio Submasters DO have audio signal present in the fader.
All inputs assigned to an Audio Submaster are summed, and
are useful as line-level returns and sends, and group processing. Audio Submasters are especially useful as effects returns
when inputs have been exhausted.
Mix Integrity
VCA’s are useful when a mix must be brought up or down
without changing the relationship between Subgroups.
Depicted below is a typical mix in Mono, with the Audio
Subgroups configured as follows:
7-BACKRND VOCALS 8-LEAD VOCAL
Although a suitable mix has been obtained during soundcheck,
during the performance the band turns up their level about
+10db, and everything will need to be turned down quickly.
Typically, the engineer would bring down the master or grab
all 8 group faders with both hands and pull everything down. A
quick listen, and a look at the relative levels of the Audio
Submasters will indicate that the mix has been compromised,
and the integrity of the mix will need to be restored.
This all can be easily handled with VCA’s. With inputs
assigned to VCA’s, the entire band mix can be turned up or
down with 1 fader. The relationship between the VCA Groups
(the ‘mix’ or the ‘blend’) will remain the same, without physically moving the Subgroups, and will remain exactly the same
at all levels. All that is needed is to move a “Band Master”
VCA.
To accomplish this, inputs would be assigned to VCA Groups.
The same basic Subgroup assignments shown previously
would be used in the Audio Subgroups, but with 2 major differences:
A)Group #8 is labeled BAND MASTER;
B)the Lead Vocal is assigned directly to the LEFT &
RIGHT MASTERS, and is not assigned to a Group.
VCA Subgroups 1 thru 5, (not 6 or 7, and you’ll see why later)
also need be assigned to VCA Subgroup 8.
What this enables is control over VCA Subgroups 1 thru 5 by
using VCA Subgroup 8 as the Band Master. Once set, the
entire blend (band mix) can be brought up or down by moving
only VCA 8. “Mix Integrity” is now possible. Some term this
as ‘poor man’s automation’, because any input assigned to
VCA subgroup 8 will electronically “move” as if the faders
had been physically moved.
Note that any inputs assigned to two (2) VCA Subgroups are
controlled by BOTH VCA Subgroups.
True Post Effect Sends
This section will examine what happens to the effect (Aux)
sends when the Audio Subgroups are used as in the example
above. In this example, Aux 1 is used for the Main Reverb,
Aux 2 for Drum Reverb and Aux 3 for the Delay. A Drum
Solo will be employed for the example here. The effects are in
Audio Group 6, making it possible to pull the effects down
between songs, or if the wet / dry balance needs to changed.
The band is cooperating at this point and the Audio Submasters
are back to the starting point. The drummer is about to take a
big solo for the night, and it will be necessary to turn Audio
Subgroup 1 up 10dB. At this point, one of two things must be
done:
1) Turn up Subgroup #6 10db also to keep the reverb at the
same relation it was to the “DRY” drum sound before it
was turned up; OR
2) Turn up all Aux sends on the drum inputs 10dB (not
desirable); OR
3) Turn up all Drum inputs 10dB on the input faders.
The reason that one of these options must be chosen is because
effects busses (aux busses) do not and will never increase or
decrease in level when an Audio Submaster is turned up or
down. This alone is the most critical aspect of why Audio
Submasters are not acceptable for controlling a mix. What has
been described here is a drum solo situation; imagine the problems encountered when adding the other Submasters!
A common solution used when using Audio Submasters is to
mix on the input faders. This way all effects will “follow” the
moves made on the faders in direct proportion. Although it is a
painful way to mix, some engineers will always mix on the
input faders.
The levels of all VCA Subgroups would be set at “0dB” (nominal). This is because “0dB” is where VCA’s operate best. It is
the “Unity” position. (Indicated by the "Unity" LED).
A stereo mix can be obtained immediately, because the inputs
can be assigned directly to the STEREO MASTER. In addition, all “band” input faders must be DOUBLE ASSIGNED to
2 VCA Subgroups. In other words, all Band inputs assigned to
(continued on page 8)
PAGE 3
VX
One of the major benefits of VCA’s is that any move made on
a VCA Subgroup will cause all inputs assigned to that
Subgroup to move in direct proportion with it. Inherently, all
effects assigned (or turned up) on any input modules that are
controlled with VCA’s will “follow” any moves made in the
exact proportion also. If a subgroup is moved “3db”; then all
effects will move “3db”. The wet/dry blend always remains the
same.
Wet / Dry Blending
The word “blend”, is used to describe the relationship between
the dry “mix” (all inputs minus the effects) and the wet “mix”
(all the effect returns).
There is no such thing as Wet/Dry Blending when using Audio
Submasters, unless mixing is done on the inputs. Any time an
Audio Subgroup is moved the wet/dry blend is destroyed, as
there is no Mix Integrity or True Post Effect Sends. The only
true way to change the wet/dry blend would be to adjust the
Master Output on any effect send. This is also an undesirable
way to adjust a mix.
With VCA’s assigned as in the previous example, it is a simple
task to adjust the balance between the ‘dry’ and the ‘wet’ by
simply moving VCA Subgroup 6. Any moves made with the
Band Master VCA (Subgroup 8) will cause everything will follow in direct proportion. The same is true for the background
vocal mix (on VCA Group 7). If VCA Group 7 is moved up or
down, all reverbs and delays turned up on all background vocal
inputs will remain in the exact proportion you have established. Therefore, once a wet/dry blend is established, it can
never be changed by moving VCA groups.
Now it is possible to mix with 4 faders, or if you will, 4
VCA’s: Lead Vocal, Background Vocals, Band and Effects. Of
course, there will always be small adjustments that need to be
made on the input faders from time to time to tweak a mix.
It has been suggested that when attempting to mix on VCA’s
for the first time, the operator turn off the sound system and
monitor with headphones. All the subtle nuances achieved can
then be heard, and the ability to easily control a mix will
become obvious. C
CENTURY SERIES
This “VCA Mixing” section was adapted from an article entitled “Mixing with VCA's,” written by Mark Smith, which
appeared in LIVE SOUND! Magazine.
Anthony McLean is the editor of LIVE SOUND!
You can contact him by Fax at (913) 677.6621,
by e-mail at CIS 75300,3141 or by
snail-mail at:
LIVE SOUND! Magazine
4741 Central #222
Country Club Plaza
Kansas City, MO 64412-1533
U.S.A.
PAGE 4
CENTURY SERIES
VX
Wiring Conventions
Crest consoles are wired with connectors that are used throughout the professional audio industry.
Wiring is as follows:
INPUT XLR
3
PIN 1
PIN 3
PIN 2
1
2
TIP - POSITIVE
RING - NEGATIVE
SLEEVE - GROUND
OUTPUT XLR
PIN 2
PIN 3
PIN 1
PIN 1 = GROUND
PIN 2 = POSITIVE
PIN 3 = NEGATIVE
TIP - LEFT
RING - RIGHT
SLEEVE - COMMON
Standard TRS
INPUT
Connections: Bal Input, Bal Output,
Direct Out, Insert Send, Bal Insert
Return, Tape In
(Tip - Ring - Sleeve)
1/4" Plug
INSERT
(Tip - Ring - Sleeve)
Headphone
Connector: Headphone Output
TIP - SEND
RING - RETURN
SLEEVE - GROUND
Standard TRS
(Tip - Ring - Sleeve)
1/4" Plug
Standard TRS
1/4" Plug
Connector: Stereo Input Module Insert L, Insert R
PAGE 5
VX
CENTURY SERIES
Rear Connections
The rear connections facilitate the numerous inputs and outputs
necessary for successful mixing. Since the console is of little
use until it is wired into a whole system, an understanding of
what each input and output does is necessary before it can be
properly connected. Use the descriptions and diagrams on the
next two pages to plan your cabling scheme.
Levels
Unless specified, nominal levels are:
O VU = +4dBu = 1.23V RMS
Max Level = +28 dBu balanced, +22dBu unbalanced
Impedances
Mic In - 4kΩ
Line In - greater than 10kΩ
Outputs -140Ω
Input Module Connections
Direct Out
This unbalanced 1/4" TRS jack delivers the direct output signal
(post fader & post mute) from the associated
input channel.
Insert Send
This unbalanced 1/4" TRS jack is used for
sending a post-input preamp, post Hi Pass
Filter, pre-EQ signal to an outboard processor. The signal at this jack is unbalanced and
always active regardless of the Insert Switch
setting.
DIR OUT
INSERT SEND
Stereo Input Module
Insert L / Insert R
These ‘combined send & return’ female TRS
jacks are used to insert effects or signal processing into the Left and Right channels of the Stereo
Input module. They can also be used to bring a
signal into the channel, bypassing the input preamp and gain circuit. The return input is enabled
by depressing the channel Insert switch.
Bal Line In L / Bal Line In R
These balanced 1/4" TRS jacks accept balanced
or unbalanced line level inputs, and delivers
them into the associated (Left or Right) selector
switch.
Bal Mic In L / Bal Mic in R
These female XLR connectors accept balanced
microphone inputs, and deliver them into the
associated (Left or Right) selector switch.
Group Module
Group Bal Out
This male XLR jack carries the post-fader output
signal from the associated group module.
INSERT L
INSERT R
BAL LINE IN L
BAL LINE IN R
BAL MIC IN L
BAL MIC IN R
INPUTX
Bal Insert Return
This balanced 1/4" TRS jack receives it’s
signal from an outboard processor. It can
also be used to bring a signal into the channel, bypassing the input preamp and gain
circuit. The return input is balanced and
must be enabled by depressing the channel
Insert switch.
Bal Line In
This balanced 1/4" TRS jack accepts a balanced or unbalanced line level input, and
delivers it to the input selector switch.
Mic In
This female XLR connector accepts balanced microphone inputs for the associated
input channel.
BAL INSERT RTN
BAL LINE IN
BAL MIC IN
INPUTX
Group Ins Send
This balanced 1/4" TRS jack allows for the
group signal to be sent to an effect or signal
processor.
Bal Ins Return
This balanced 1/4" TRS jack allows for the
return of the effected and/or processed group signal back into the associated group.
Bus In
This female XLR connector delivers the connected signal directly to the associated group bus.
(Useful for connection of expander mixers)
Matrix Out
This male XLR connector delivers a balanced
signal from the associated matrix.
Matrix Ext In
This balanced female XLR connector is designed
to accept an external signal that is inserted into
the Matrix. This level is controlled by the Matrix
Ext Level control.
Aux In A/B Left/Right
These female XLR jacks (on group modules 5-8)
accept signals controlled by the Stereo Aux in section (L & R Master Modules).
GRP BAL OUT
INSERT SEND
BAL
RTN
VXGROUP
BUS
OUT
LEFT
IN
EXT
AUX
M
A
T
R
I
X
IN
IN
A
PAGE 6
CENTURY SERIES
Master Module Connections
Left/Right Bal Out
This male XLR jack delivers a balanced post-fader signal
containing all signals assigned to the left and right outputs.
Mono Bal Out
This male XLR jack delivers a balanced post-fader signal
containing all signals assigned to the Mono clean bus.
Ext. Talkback Out
This male XLR jack provides an external balanced signal
from the selected talkback source.
Insert Send
These balanced 1/4" TRS jacks allow for the right, left, or
mono signal to be sent to an effect or signal processor.
Bal Rtn
These balanced 1/4" TRS jacks allow for the return of the
effected and/or processed group signal back into the right,
left, or mono module.
Aux 1-8 Outputs
These eight connections provide the balanced output signals from their respective auxiliary buses.
EXT TB OUT
MONO BAL OUT
RIGHT BAL OUT
LEFT BAL OUT
VX
Ext. Talkback In
This female XLR connector accepts a balanced signal
which is assignable to any of the locations in the talkback
system.
L - TAPE IN - R
When no plugs are inserted into these balanced 1/4" TRS
jacks, the L - STR PGM - R signal is present. This stereo
input is controlled by the Tape In section in the Master
module.
L - STR PGM - R
These jacks accept external balanced stereo line level signals (Left and Right). This stereo input is controlled by the
Stereo Program section in the Master module.
EXT TB IN
L
-
T
A
P
E
I
N
-
R
L
-
M
N
T
R
O
U
T
-
R
INSERT SEND
BAL
RTN
L
S
T
R
P
G
M
-
R
L
A
L
T
O
U
T
-
R
INSERT SEND
BAL
RTN
2
4
6
8
A
U
X
O
U
T
P
U
T
S
INSERT SEND
BAL
RTN
1
3
5
7
A
U
X
O
U
T
P
U
T
S
RIGHT
VXLEFT
MASTERVX
VX
MONO
VX
L - ALT OUT - R
These male XLR jacks provide an additional output point for
the Left and Right bus signals. This stereo output is controlled
by the Alt L/R Out section in the Master module.
L - MNTR OUT - R
These male XLR jacks provide a stereo monitor output, controlled by the Monitor Out section in the Master module.
PAGE 7
VX
CENTURY SERIES
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 chassis sizes (32, 44, 52, 64) of the the model Vx
console should only be used with the Model XCVA06 Power Supply.
Press to Reset
ON
C O N S O L E S
Power Supply
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS : RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC
ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU Á
L'HUMIDITÉ
Designed & manufactured in the USA by:
A division of Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
1
2
3
4
5
7
6
Pin 1 +24V
Pin 2 +20V
Pin 3 Analog
Pin 4 Analog
Pin 5 Digital
Pin 6 +48V
Pin 7 -20V
POWER OUT
POWER OUT
Supply Identification
The type of power supply can be identified by the model number shown on the back of the chassis and panel label.
Power Requirements
The Century Series power supplies have certain electrical
requirements to operate properly. If possible the power supply
should be connected to a dedicated circuit. Should any other
appliance on the same circuit draw enough current to overload
the circuit, the breaker or fuse will trip causing loss of power
to the console. Note the maximum current draw specifications
at right. Be sure that the circuit to which you connect the supply can handle the draw.
The power switch on the supply front panel is also a circuit
breaker, there is no power fuse. Should the supply ever shut
down, or trip at start up, simply push the switch to the off position and then on again.
Ground Linking
Safety Considerations - Each new power supply is shipped
with the AC third wire ground connected to the console chassis
ground. The connection is made at the rear of the power supply
unit. This is necessary for safety reasons so that exposed metal
parts are grounded. In the event of a live conductor making
contact with the console chassis or the power supply chassis
then the current will flow to ground without a safety hazard
arising. Note that when the console is disconnected from the
power supply the chassis ground connection to AC third wire
ground is broken and safety protection is lost. For uninterruptible grounding, in a fixed installation for example, make a connection directly to the console chassis from the safety ground.
Disconnect the ground link on the rear of the power supply.
This disconnects console ground from power supply AC third
wire ground which would otherwise create a hum-loop.
+20V
+48V
ModelXCVA04
S/N
± 20V@4+ 24V@4
+ 48V @ 1
+ 24V @ 6
± 20V @ 6
Model XCVA06
CONSOLE
GROUND
-20V
CHASSIS
GROUND
+24V
MAXIMUM AC IN:
XCVA04: 415 WATTS
XCVA06: 825 WATTS
6A
Twin Supply Operation
When twin supplies are in use for automatic back-up, then the
ground links on both supplies should be fitted.
In a situation where the safety ground to the console chassis
has been connected and the ground path via the power supply
is causing a hum-loop, then disconnect the ground links on
BOTH power supplies.
Console and Power Supply Grounding
Console chassis ground is electrically connected to audio
ground, pin 1 of XLR connectors and 1/4" sockets and to the
terminal 'CONSOLE GROUND' at the rear of the power supply. The AC third wire connection in the power supply cable
connects the metal chassis of the power supply to safety
ground. This connection should never be disturbed. Hazardous
voltages exist inside the power supply which require the case
to be grounded. When rack-mounted, the power supply ground
may transfer to the rack case thru the front fixing screws,
though this connection is not reliable. When a console is configured within a complete sound system the grounding requirements may call for the ground link to be disconnected. This is
permissible only when an alternative ground path has been
provided. If in doubt seek the advice of an experienced electrical engineer.
Power Supply
Model
XCVA06
Serial Number Tag
Model Number
Max Current
Draw @ 120V
9 Amps
S/N
Max Current
Draw @ 240V
5 Amps
ModelXCPS-40
±20V@4+24V@4
+48V @ 1A
+24V @ 6A
±20V @ 6A
XCVA06
Model
PAGE 8
CENTURY SERIES
Power Connections
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.
Multiple power supplies can be daisy-chained to provide failsafe protection in the event of a supply failure. When two or
more supplies are used, both power supplies run all the time. In
the event of supply failure, the remaining power supply(s) will
take over the entire load.
VX
NOTE: Although both of the multi-pin connectors on the back
of the power supply are labeled “POWER OUT”, it is necessary (and acceptable) to link two power supplies together as
shown in the diagram below.
ADDITIONAL NOTE: The multi-conductor cable used for
power supply-to-power supply connection is different than that
used for a conventional power supply-to-console connection,
and must be specified when the second power supply is
ordered.
Ground Link
To Console
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS : RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC
ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU Á
L'HUMIDITÉ
Designed & manufactured in the USA by:
A division of Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
ModelXCVA04
S/N
± 20V@4+ 24V@4
+ 48V @ 1
+ 24V @ 6
± 20V @ 6
Model XCVA06
CONSOLE
GROUND
CHASSIS
GROUND
MAXIMUM AC IN:
XCVA04: 415 WATTS
XCVA06: 825 WATTS
To AC Mains
1
2
4
5
6
7
Pin 1 +24V
Pin 2 +20V
Pin 3 Analog
Pin 4 Analog
Pin 5 Digital
Pin 6 +48V
Pin 7 -20V
POWER OUT
3
POWER OUT
Interface Cable
POWER OUT
1
2
3
4
5
6
7
Pin 1 +24V
Pin 2 +20V
Pin 3 Analog
Pin 4 Analog
Pin 5 Digital
Pin 6 +48V
Pin 7 -20V
POWER OUT
Console Cooling
A dual-fan cooling configuration is included in all Vx 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.
Once the console is powered up, cooling fans remain on. A rear panel switch permits the fans to be set at low, medium or high
speeds.
There are no filters to change or clean. As with any console, use in dusty/unclean environments should be avoided.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS : RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC
ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU Á
L'HUMIDITÉ
Designed & manufactured in the USA by:
A division of Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
ModelXCVA04
S/N
± 20V@4+ 24V@4
+ 48V @ 1
+ 24V @ 6
± 20V @ 6
Model XCVA06
CONSOLE
GROUND
CHASSIS
GROUND
MAXIMUM AC IN:
XCVA04: 415 WATTS
XCVA06: 825 WATTS
To AC Mains
PAGE 9
VX
CENTURY SERIES
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.
Balanced Mic Inputs
Input Processing,
via Input Module
Insert Send and Return
Connections
CENTURY
10
10
10
10
10
10
10
10
0
5
10
15
20
30
40
60
0
0
0
0
0
5
5
5
5
5
10
10
10
10
10
15
15
15
15
15
20
20
20
20
20
30
30
30
30
30
40
40
40
40
40
60
60
60
60
60
10
10
10
10
0
0
0
0
0
0
5
5
5
5
5
5
10
10
10
10
10
10
15
15
15
15
15
15
20
20
20
20
20
20
30
30
30
30
30
30
40
40
40
40
40
40
60
60
60
60
60
60
Balanced Line Inputs
10
10
10
10
10
10
10
10
10
0
0
0
0
0
5
5
5
5
5
10
10
10
10
10
15
15
15
15
15
20
20
20
20
20
30
30
30
30
30
40
40
40
40
40
60
60
60
60
60
10
0
0
0
0
0
5
5
5
5
5
10
10
10
10
10
15
15
15
15
15
20
20
20
20
20
30
30
30
30
30
40
40
40
40
40
60
60
60
60
60
Keyboards,
Samplers,
Drum Machines
External Mixer
Input via Group Bus In
CENTURY
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
0
0
5
5
10
10
15
15
20
20
30
30
40
40
60
60
10
0
5
10
15
20
30
40
60
10
0
0
0
0
0
0
0
0
0
0
0
0
5
5
5
5
5
5
5
5
5
5
5
5
10
10
10
10
10
10
10
10
10
10
10
10
15
15
15
15
15
15
15
15
15
15
15
15
20
20
20
20
20
20
20
20
20
20
20
20
30
30
30
30
30
30
30
30
30
30
30
30
40
40
40
40
40
40
40
40
40
40
40
40
60
60
60
60
60
60
60
60
60
60
60
60
10
0
5
10
15
20
30
40
60
10
0
0
0
0
0
0
0
0
5
5
5
5
5
5
5
5
10
10
10
10
10
10
10
10
15
15
15
15
15
15
15
15
20
20
20
20
20
20
20
20
30
30
30
30
30
30
30
30
40
40
40
40
40
40
40
40
60
60
60
60
60
60
60
60
Input Connections
Aux Connections
PAGE 10
Out
From Aux 1-8 Out
In
MONO BAL OUT
INSERT SEND
BAL
RTN
Master
LEFT BAL OUT
RIGHT BAL OUT
INSERT SEND
INSERT SEND
BAL
BAL
RTN
RTN
1
2
L
S
T
A
A
R
U
U
3
4
P
X
X
G
M
O
O
R
U
U
5
6
T
T
L
P
-
P
A
U
U
L
T
T
T
7
8
S
S
O
U
T
R
Signal Processors
GRP BAL OUT
INSERT SEND
BAL
RTN
EXT TB OUT
GRP BAL OUT
GRP BAL OUT
GRP BAL OUT
EXT TB IN
INSERT SEND
INSERT SEND
INSERT SEND
BAL
BAL
BAL
RTN
RTN
RTN
BUS
IN
OUT
M
A
T
R
I
X
EXT
IN
AUX
IN
A
LEFT
BUS
BUS
BUS
IN
IN
OUT
OUT
M
M
A
A
T
T
R
R
I
I
X
X
EXT
EXT
IN
IN
AUX
AUX
IN
IN
A
A
LEFT
LEFT
L
IN
T
A
P
E
OUT
I
M
N
-
A
R
T
R
L
I
-
X
M
N
EXT
T
IN
R
O
AUX
U
IN
T
-
A
R
LEFT
To Input Channels
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