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X-VCA owner’s manual
X-VCA block diagram
VCA SUB-CARD
GC
GC
X-VCA MASTER MODULE (LOWER AREA)
MASTER
MICRO
INTER-
FAC E
CARD
-
INPUT &
GROUP
CONTROL
TO
RIGHT
SIDE
-
INPUT
MICRO
CARDS
TO
LEFT
SIDE
-
GROUP
MICRO
CARDS
MICRO MUTE CONTROL
+48V
TB
SWITCH
LOGIC
POST
FADER
∑
∑
SOLO
AUDIO
SOLO
MIX
AMPS
TO METER BRIDGE
L SOLO R
X-VCA Block Diagram
M3 M4
X-VCA BLK DIA-REV1.1 9/8/00
1 - LEV
2 - PAN
GC
P
IN • MIDI • OUT
( ON REAR PANEL )
1 2 3 4 5 6 7 8 LEFT RIGHT MONO SOLO L SOLO R
METERBRIDGE - 13 MECHANICAL VU METERS WITH LED ILLUMINATION
8 METERS FOR GROUP OUT , 3 FOR MAIN OUTS, 2 FOR SOLO LEFT & RIGHT
SOLO
ACTIVE
CLEAR
LAST
PRESSED
SOLO CONTROL & STATUS
GAIN
SOLO LEFT
SOLO RIGHT
3- LEV
4 - PAN
VCA
CV
∑
GC
∑
GC
VCA
PK
SIG
∑
GC
∑
GC
+10
LEFT POST
LEFT
FADER
+10
RIGHT POST
RIGHT
FADER
L / R
SOLO
PK
SIG
ASSISTED OUT
SIGNAL SOURCES
FROM L / R / MONO
LEFT RIGHT
POST FADER
LEFT RIGHT
PRE FADER
POST PRE
MONO
MONITOR FEEDS
TO OUTPUTS
MATRIX EXPANSION CONNECTOR
37-WAY FEMALE D-SUB
(ON REAR OF MASTER MODULE)
POWER FEED TO
X-MATRIX BOXES
AUDIO FEEDS
FROM -
GROUPS
L / R / MONO
EXT MATRIX IN 1
SOLO AUDIO
AND CONTROL
TALKBACK
AUDIO
LEFT POST
RIGHT POST
MATRIX EXPANSION CONNECTOR ALLOWS
ADDITIONAL MATRIX MIXES TO BE CREATED
EXTERNALLY USING X-MATRIX BOXES OR
OTHER LINE-LEVEL MIXERS.
X-MATRIX BOXES LINK SOLO AND TALKBACK
FUNCTIONS WITH X-VCA CONSOLE.
PA N
LCR PAN
BUS ASSIGN
& CONTROL
SWITCHES
2468
MONOL-R1357
TO SOLO
SWITCHING
L- AFL -R
LEVEL
FREQ
Q
LEVEL
FREQ
Q
LEVEL
FREQ
Q
LEVEL
FREQ
Q
FOUR-BAND FULLY PARAMETRIC EQ
LOW MIDHI MIDHF
EQ
ON
400 - 8 KHZ 100 - 2 KHZ
3 - 0.7
1K - 20 KHZ
3 - 0.7
SH
40 - 800 HZ
3 - 0.7 3 - 0.7
SH
LF
PEAK+80-6SIG
INPUT METER
PRE
FADER
POST
FADER
INSERT
ON
INPUT
PREAMP
DIRECT OUT
INSERT SEND
BAL INSERT RTN
LINE
SW
BALANCED
IN
GAIN
15 - 70 DB
Ø
LINE
26dB
PAD
+48V
XFORMER
OPTION
HPF
20 - 400HZ
HPF
P
LINE
SW
X-VCA MONO INPUT
(24 TO 48 FITTED)
SOLO
VCA
ASSIGN
MUTE
SOLO LEFT
SOLO RIGHT
SOLO CONTROL
& SWITCHING
INPUT CHAN
MICRO
INTERFACE
CARD
VCA,
MUTE
AND
SOLO
CTRL
PRE-FADER
POST-PAN
L - R
VCA ASSIGN
LATCHES
VCA MASTER
BUSES 1-8
CHANNEL
FADER
AUX SENDS
1 THRU 4
SAFE
PREVIEW
1 OF 4
CIRCUITS
1-2
PRE
FROM
PREV
MODULE
TO
NEXT
MODULE
1-2 LEV/PAN CTRL
AUX 1
AUX 2
3-4 LEV/PAN CTRL
AUX 3
AUX 4
PRE-SOURCE
AMP
PRE
SOURCE
MUTE ?
EQ FDR
NO
YES
PRE-EQ
DIRECT OUT
SOURCE
PRE-FADER
POST-FADER
PRE
SOURCE
SELECT
3-4
PRE
5-8
PRE
5- LEV
6 - PAN
5-6 LEV/PAN CTRL
AUX 5
AUX 6
7- LEV
8 - PAN
7-8 LEV/PAN CTRL
AUX 7
AUX 8
ROTARY
POT PAD LED
AMP
PANEL
SWITCH
USER
OPTION
100MM
FADER
FET
SWITCH
BALANCED
DRIVER
ALL SWITCHES SHOWN IN THE UP (DESELECTED) POSITION
AMP(LIFIER) GAIN SHOWN IN DB WHEN NEEDED
WHEN SHOWN: 1/4” TRS SWITCHING JACKS HAVE NORMALLY CLOSED CONTACTS
USER OPTIONS IMPLEMENTED WITH REMOVABLE SHUNTS
DEFAULT SHUNT POSITION SHOWN UNDERLINED
GROUND COMP
DRIVER
REMOVABLE
SHUNT
BICOLOR
LED
1/4” TRS
JACK
XLR
JACK
OBE
FRANK
ELECT
SWITCH
STANDARD OUTPUT LEVEL IS +4 dBu AT 0 VU
PIN 2 HOT ON ALL BALANCED OUTPUTS (XLR JACKS)
FOR UNBALANCED OPERATION:
TIE PIN 3 TO PIN 1, USE PIN 2 FOR OUTPUT, PIN 1 FOR GND
“Ø” SYMBOL INDICATES POLARITY REVERSE
LEGENDS
DUAL DC CONNECTORS FOR
LINKING BACK-UP SUPPLY
LOW-NOISE FAN
FOR COOLING
STANDARD IEC
POWER INLET
REMOVABLE LINK FOR
ISOLATING CONSOLE
GROUND
CREST X-SERIES POWER SUPPLY ( REAR VIEW )
MODEL 5A
90-250VAC
50/60 HZ
DC INPUT ( ON REAR )
+/- 18V, +12V, +48V
12V LAMP SOCKETS - 2 OR 4
( ON REAR OF METER BRIDGE )
LAMP DIM
( ON REAR )
RIBBON
CABLE
INTER-
CONNECT
MIX AMP
TA LK TO AU X
AUX
INSERT RTN
AUX
INSERT
SEND RTN
AUX
MIX
TB
FEED
XFORMER
OPTION
AUX
BAL OUT
+10
AUX POST
AUX
MUTE
AUX PRE
TO SOLO
SWITCHING
TO SOLO
SWITCHING
MIX AMP
GROUP INSERT
SEND RTN
GRP
MIX
XFORMER
OPTION
GRP
BAL OUT
+10
GROUP
POST
GRP
MUTE
GROUP PRE
BUS IN
TO GROUP
MIX BUS
GROUP
INSERT
ON
POST
GROUP
MATRIX
SENDS
M1
M2
M3
M4
SOLO CONTROL
& SWITCHING
GROUP
SOLO
ASSIGN
AUX
SOLO
GROUP PRE
AUX POST
GROUP
MICRO
INTER-
FACE
CARD
1 OF 4
CIRCUITS
GROUP
MUTE
AUX
MUTE
SAFE
PREVIEW
SAFE
PREVIEW
FROM
MASTER
MICRO
CARD
TO
INPUT
MICRO
CARDS
VCA ASSIGN
LATCHES
VCA MASTER
BUSES 1-8
GROUP
FADER
CV
TO GROUP FADER
VCA ASSIGN
LATCHES
GROUP
POST
GATE
ON
COMP
ON
GROUP
ATTENUATION
METER
VOX PERC
AUTO
1
2
3
5
7
9
12
15
18
21
THRESH
ON
SOFT
KNEE
GAIN
0 DB +20
RATIO
1:1 20:1
THRESH
-45 +15
TIMING CONTROL
RATIO
1:5 1:1
THRESH
-60 -20
RMS
DETECTOR
PFL
SLAVE
VCA
COMPRESSOR CONTROL
EXPANDER
CONTROL
GROUP DYNAMICS SUB-CARD
GROUP
METER SEND
LINK
TO ADJACENT CHANNEL
ODD/EVEN PAIRS
THRESH
ON
MONO
L-R
GROUP
PA N
GROUP
BUS ASSIGN
SWITCHES
X-VCA GROUP OUTPUT
(1 OF 8 SHOWN)
MICRO
CONTROL
TO EXT MTX
AUX ODD/EVEN
STEREO PAIR
AUX PRE
UNITY
MUTE
EDIT
ASSIGN
SOLO
VCA
MASTER
FADER
PART OF GROUP MICRO INTERFACE CARD
VCA MASTERS
(1 OF 8 SHOWN)
TO RIBBON
AUX
LEVEL
TALK BACK
+48 VOLT
OFF / ON
TALK BACK
IN
HEADPHONE
OUT
PINK
NOISE
PINK
NOISE
GEN
TALK ON
TB
LEVEL
TB AUDIO
(TO RIBBON)
HP
LEVEL
JACKS LOCATED ON MASTER MODULE
AND UNDER ARMREST
TAP TO
LATCH
-
HOLD FOR
MOMENTARY
TB
M2M1
SOLO LEFT
SOLO RIGHT
AFL MODE
AFL MODE
X-VCA MASTER MODULE
TALK TO L / R
LEFT
INSERT
SEND RTN
LEFT
MIX
TB
FEED
HI-PASS FILTERS
40HZ@24DB/OCT
HPF
MIX AMPS
RIGHT
MIX
HPF
HPF
ON
SUM
L / R
RIGHT
LEVEL
HF
1K - 20 KHZ
FREQ
Q
3 - 0.7
LEVEL
HI MID
400 - 8 KHZ
FREQ
Q
3 - 0.7
LEVEL
MID
200 - 4 KHZ
FREQ
Q
3 - 0.7
LEVEL
LO MID
60 - 1.2KHZ
FREQ
LEVEL
LF
40 - 800HZ
FREQ
L / R
EQ ON
L / R
PRE-FADER
STEREO 5-BAND SEMI-PARAMETRIC EQ
RIGHT SIDE FOLLOWS LEFT
TO SOLO BUS & MICRO INTERFACE
∑
MUTE AND SOLO SWITCHING
(MICRO CONTROLLED)
TO SOLO BUS & MICRO INTERFACE
SOLO MUTE
SAFE
PRVW
MIX AMP
TA LK TO
MATRIX
MATRIX
MIX
TB
FEED
MATRIX
BAL OUT
+10
MATRIX
POST
MATRIX
MUTE
MATRIX
PRE
MATRIX
LEVEL
∑
GC
MONO
SOLO
TALK TO MONO
MONO
INSERT
SEND RTN
MONO
MIX
TB
FEED
HI-PASS FILTER
40HZ@24DB/OCT
HPF
MIX AMP
HPF
ON
LEVEL
HF
1K - 20 KHZ
FREQ
Q
3 - 0.7
LEVEL
HI MID
400 - 8 KHZ
FREQ
Q
3 - 0.7
LEVEL
MID
200 - 4 KHZ
FREQ
Q
3 - 0.7
LEVEL
LO MID
60 - 1.2KHZ
FREQ
LEVEL
LF
40 - 800HZ
FREQ
MONO
EQ ON
MONO
PRE-FADER
5-BAND SEMI-PARAMETRIC EQ
TO SOLO BUS & MICRO INTERFACE
+10
MONO POST
MONO
FADER
VCA
MONO
METER
SEND
MONO
BAL OUT
OUTPUT
ATTENUATION
METER
ON
1
3
6
9
12
18
24
MONO
LIMITER ON
OUTPUT
LEVEL
-6 DBU +20
20 : 1
RATIO
XFORMER
OPTION
MONO
LIMITER
MONO
POST
VCA
VCA
LEFT
BAL OUT
OUTPUT
ATTENUATION
METER
ON
1
3
6
9
12
18
24
L / R
LIMITER ON
OUTPUT
LEVEL
-6 DBU +20
20 : 1
RATIO
XFORMER
OPTION
RIGHT
L / R STEREO
LIMITER
L / R
METER
SENDS
LEFT
POST
RIGHT
POST
POST
MONO
MONO
MATRIX
SENDS
M1
M2
M3
M4
TO EXT MTX
EXT IN 1
TO ALL
EXT MATRIX IN
MATRIX SENDS
M1
M2
M3
M4
TO EXT MTX
MONO TO MATRIX SENDS SHOWN.
LEFT AND RIGHT BOTH HAVE
IDENTICAL SETS OF MATRIX SENDS
AND SWITCHES
EXT MATRIX IN
1
2
3
4
EXTERNAL STEREO
PROGRAM IN
L
R
STEREO 2-BAND
SHELVING EQ
HFLF
STR PGM
LEVEL
L / R
PRE-FADER
PK
SIG
PK
SIG
TO SOLO BUS
L / R
MONO
EXT STR PGM
SOLO
MATRIX CIRCUITRY 1 OF 4 SHOWN
SOLO
OFF
SOLO
CTRL
SUM
MONO
MONITOR
LEVEL
MONITOR OUT
LEFT RIGHT
LEFT - RIGHT
SOLO
AUDIO
TA LK TO
MONITOR
TALKBACK
AUDIO
L R
PRE MON
SOURCE
L R
POST MON
SOURCE
ALT OUT
LEVEL
ALTERNATE OUT
LEFT RIGHT
SUM
MONO
TA LK TO
ALT OUT
TALKBACK
AUDIO
L R
POST MON
SOURCE
PRE FDR
L R
PRE MON
SOURCE
L R
PRE MON
SOURCE
L R
POST MON
SOURCE
MAIN OUTPUT LIMITERS
LCR TO
OUTPUTS
L R
POST MON
SOURCE
L R
PRE MON
SOURCE
X-VCA STEREO INPUT
(4 NORMALLY FITTED)
STEREO INPUTS HAVE SAME FEATURES AS
MONO INPUT EXCEPT AS NOTED BELOW:
• DUAL SETS OF LINE INPUTS (NO MIC LEVEL)-
- SWITCHABLE BETWEEN XLR OR TRS / RCA
- L & R SOURCE SELECT SWITCHES
• 4-BAND SEMI-PARAMETRIC EQ (NO Q CONTROL)
• DUAL-LED SIGNAL PRESENT / PEAK INDICATORS
• NO LCR ASSIGNMENT
• NO INSERT SEND / RETURN JACKS
• NO DIRECT-OUT JACK
CV
L / R TO
MONO
EXT STR PGM
ASSIGN
BALANCED INPUTS TO FEED
INTERNAL MATRIX 1-4
EXT INPUT 1 ALSO FEEDS
MATRIX EXPANSION CONNECTOR
SINGLE
SCENE
EDIT
PREVIEW
MICRO
UTILITY
EDIT
SAFE
SEQUENCED
SCENE
8
6
4
5
3
1
2
7
M
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A
L
M
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S
C
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N
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GO
SEQUENCE
SCENE ON
128
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4
1
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6
7