Crest Audio XR-20, XR-24 Service manual
Schematic Set
For XR-20 and XR-24
Rack-Mount Mixers
XR-20
12 Mono Inputs • 4 Stereo Inputs
XR-24
8 Mono Inputs • 8 Stereo Inputs
30
20
10
0
8 8
2K
1K
600
400
0
8 8
500
300
100
0
8 8
0
8 8
AUX SENDS
AUX 1-2
10
20
30
40
•
=
GAIN
70
LO CUT
1515
8K
1515
2K
1515
1515
EQ
ON
PRE
–
6
40
50
+–
3K
5K
HM
+–
1K
+–
+–
LEV
0
+
3
PAN
HF
LM
LF
1
LINE INPUT
30
20
10
0
8 8
2K
1K
600
400
0
8 8
500
300
100
0
8 8
0
8 8
(
MIC PAD
)
GAIN
40
50
70
LO CUT LO CUT LO CUT LO CUT LO CUT LO CUT LO CUT LO CUT LO CUT LO CUT LO CUT
+–
HF
1515
3K
5K
8K
HM
+–
1515
1K
2K
LM
+–
1515
+–
LF
1515
EQ
2 3 4 5 6 7 8 9 10 11 12 S1 S2 S3 S4
ON
LINE INPUT
30
20
10
0
8 8
2K
1K
600
400
0
8 8
500
300
100
0
8 8
0
8 8
(
MIC PAD
GAIN
40
50
70
+–
1515
3K
5K
8K
+–
1515
1K
2K
+–
1515
+–
1515
EQ
ON
HF
HM
LM
LF
)
20
8 8
1K
600
400
8 8
300
100
8 8
8 8
LINE INPUT
30
10
0
2K
0
500
0
0
(
MIC PAD
GAIN
40
50
70
+–
1515
3K
5K
8K
+–
1515
1K
2K
+–
1515
+–
1515
EQ
ON
HF
HM
LM
LF
)
20
8 8
1K
600
400
8 8
300
100
8 8
8 8
LINE INPUT
30
10
0
2K
0
500
0
0
(
MIC PAD
GAIN
40
50
70
+–
1515
3K
5K
8K
+–
1515
1K
2K
+–
1515
+–
1515
EQ
ON
HF
HM
LM
LF
)
20
8 8
1K
600
400
8 8
300
100
8 8
8 8
LINE INPUT
30
10
0
2K
0
500
0
0
(
MIC PAD
GAIN
40
50
70
+–
1515
3K
5K
8K
+–
1515
1K
2K
+–
1515
+–
1515
EQ
ON
HF
HM
LM
LF
)
20
8 8
1K
600
400
8 8
300
100
8 8
8 8
10
2K
30
0
0
500
0
0
EQ
ON
GAIN
70
+–
1515
3K
8K
+–
1515
2K
+–
1515
+–
1515
40
50
1K
HF
5K
HM
LM
LF
LINE INPUT
30
20
10
0
8 8
2K
1K
600
400
0
8 8
500
300
100
0
8 8
0
8 8
(
MIC PAD
GAIN
40
50
70
+–
1515
3K
5K
8K
+–
1515
1K
2K
+–
1515
+–
1515
EQ
ON
HF
HM
LM
LF
)
20
8 8
1K
600
400
8 8
300
100
8 8
8 8
LINE INPUT
30
10
0
2K
0
500
0
0
(
MIC PAD
GAIN
40
50
70
+–
1515
3K
5K
8K
+–
1515
1K
2K
+–
1515
+–
1515
EQ
ON
HF
HM
LM
LF
)
20
8 8
1K
600
400
8 8
300
100
8 8
8 8
LINE INPUT
30
10
0
2K
0
500
0
0
(
MIC PAD
GAIN
40
50
70
+–
1515
3K
5K
8K
+–
1515
1K
2K
+–
1515
+–
1515
EQ
ON
HF
HM
LM
LF
)
20
8 8
1K
600
400
8 8
300
100
8 8
8 8
LINE INPUT
30
10
0
2K
0
500
0
0
(
MIC PAD
GAIN
40
50
70
+–
1515
3K
5K
8K
+–
1515
1K
2K
+–
1515
+–
1515
EQ
ON
HF
HM
LM
LF
)
20
8 8
1K
600
400
8 8
300
100
8 8
8 8
10
2K
30
0
0
500
0
0
EQ
ON
GAIN
70
+–
1515
3K
8K
+–
1515
2K
+–
1515
+–
1515
40
50
1K
HF
5K
HM
LM
LF
STR LINE IN
30
20
15
0
8 8
2K
1K
600
400
0
8 8
500
300
100
0
8 8
0
8 8
(
MIC PAD
GAIN
40
50
60
SUM
INPUTS
+–
1515
3K
5K
8K
HM
+–
1515
1K
2K
+–
1515
+–
1515
EQ
ON
HF
LM
LF
)
20
8 8
1K
600
8 8
300
100
8 8
8 8
STR LINE IN
(
)
MIC PAD
30
GAIN GAIN GAIN
40
50
15
60
SUM
INPUTS
0
+–
HF
1515
2K
3K
5K
400
8K
0
HM
+–
1515
500
1K
2K
0
LM
+–
1515
0
+–
LF
1515
EQ
ON
STR LINE IN
30
20
15
0
8 8
2K
1K
600
400
0
8 8
500
300
100
0
8 8
0
8 8
(
MIC PAD
40
50
60
SUM
INPUTS
+–
1515
3K
5K
8K
HM
+–
1515
1K
2K
+–
1515
+–
1515
EQ
ON
)
HF
LM
LF
AUX SENDS AUX SENDS AUX SENDS AUX SENDS AUX SENDS AUX SENDS AUX SENDS AUX SENDS AUX SENDS AUX SENDS AUX SENDS AUX SENDS AUX SENDS AUX SENDS AUX SENDS
20
30
40
AUX 1-2
10
•
=
PRE
–
6
LEV
0
+
3
PAN
20
30
40
AUX 1-2
10
•
=
PRE
–
6
LEV
0
+
3
PAN
20
30
40
AUX 1-2
10
•
=
PRE
–
6
LEV
0
+
3
PAN
20
30
40
AUX 1-2
10
•
=
PRE
–
6
LEV
0
+
3
PAN
20
30
40
AUX 1-2
10
•
=
PRE
–
6
LEV
0
+
3
PAN
20
30
40
AUX 1-2
10
•
=
PRE
–
6
LEV
0
+
3
PAN
20
30
40
AUX 1-2
10
•
=
PRE
–
6
LEV
0
+
3
PAN
20
30
40
AUX 1-2
10
•
=
PRE
–
6
LEV
0
+
3
PAN
20
30
40
AUX 1-2
10
•
=
PRE
–
6
LEV
0
+
3
PAN
20
30
40
AUX 1-2
10
•
=
PRE
–
6
LEV
0
+
3
PAN
20
30
40
AUX 1-2
10
•
=
PRE
–
6
LEV
0
+
3
PAN
20
30
40
AUX 1-2
10
•
=
PRE
–
6
LEV
0
+
3
PAN
20
30
40
AUX 1-2
10
•
=
PRE
–
6
LEV
0
+
3
PAN
20
30
40
AUX 1-2
10
•
=
PRE
–
6
LEV
0
+
3
PAN
STR LINE IN
30
20
15
0
8 8
2K
1K
600
400
0
8 8
500
300
100
0
8 8
0
8 8
AUX 1-2
10
20
30
40
•
=
(
MIC PAD
40
50
60
SUM
INPUTS
+–
1515
3K
5K
8K
HM
+–
1515
1K
2K
+–
1515
+–
1515
EQ
ON
PRE
LEV
–
0
+
3
6
PAN
P
H
)
O
N
E
S
5
6
4
3
2 8
1
HF
3
2 8
1
15
20
LM
40
15
LF
20
40
G1 G2 G3 G4
7
9
0
10
SOLO
OFF
FROM
MONITOR
TAPE
IN
ADD MONO
TO PHONES
& ALT OUT
5
TAPE
6
4
0
10
•
10
•
GROUP ASSIGN TO MAINS
IN
7
9
10
TO A1-2
TO L-R
AUX
–
OUT
0
+
5
10
AFL AFL
A3 A4
AUX
–
OUT
0
+
5
10
AFL AFL
A5 A6
XR 20
L R
SOLO
15
20
40
15
20
40
15
20
40
M
L
R
12V
LAMP
9
6
3
0
3
6
9
12
15
18
21
24
PWR
AUX
10
–
OUT
0
+
5
10
•
AFL
1-2
AUX
10
–
OUT
0
+
5
10
•
AUX
10
–
OUT
0
+
5
10
•
1 2
AUX 3-4
10
20
30
40
•
10
20
30
40
•
10
20
30
40
•
10
20
30
40
•
AUX 5-6
=
L
ODD
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
PAN
R
EVEN
1 2
3
20
30
40
4
20
30
40
5
20
30
40
6
20
30
40
L
ODD
AUX 3-4
10
•
10
•
10
•
10
•
AUX 5-6
=
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
PAN
R
EVEN
1 2
3
20
30
40
4
20
30
40
5
20
30
40
6
20
30
40
L
ODD
AUX 3-4
10
•
10
•
10
•
10
•
AUX 5-6
=
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
PAN
R
EVEN
1 2
3
20
30
40
4
20
30
40
5
20
30
40
6
20
30
40
L
ODD
AUX 3-4
10
•
10
•
10
•
10
•
AUX 5-6
=
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
PAN
R
EVEN
1 2
3
20
30
40
4
20
30
40
5
20
30
40
6
20
30
40
L
ODD
AUX 3-4
10
•
10
•
10
•
10
•
AUX 5-6
=
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
PAN
R
EVEN
1 2
3
20
30
40
4
20
30
40
5
20
30
40
6
20
30
40
L
ODD
AUX 3-4
10
•
10
•
10
•
10
•
AUX 5-6
=
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
PAN
R
EVEN
1 2
3
20
30
40
4
20
30
40
5
20
30
40
6
20
30
40
L
ODD
AUX 3-4
10
•
10
•
10
•
10
•
AUX 5-6
=
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
PAN
R
EVEN
1 2
3
20
30
40
4
20
30
40
5
20
30
40
6
20
30
40
L
ODD
AUX 3-4
10
•
10
•
10
•
10
•
AUX 5-6
=
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
PAN
R
EVEN
1 2
3
20
30
40
4
20
30
40
5
20
30
40
6
20
30
40
L
ODD
AUX 3-4
10
•
10
•
10
•
10
•
AUX 5-6
=
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
PAN
R
EVEN
1 2
3
20
30
40
4
20
30
40
5
20
30
40
6
20
30
40
L
ODD
AUX 3-4
10
•
10
•
10
•
10
•
AUX 5-6
=
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
PAN
R
EVEN
1 2
3
20
30
40
4
20
30
40
5
20
30
40
6
20
30
40
L
ODD
AUX 3-4
10
•
10
•
10
•
10
•
AUX 5-6
=
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
PAN
R
EVEN
1 2
3
20
30
40
4
20
30
40
5
20
30
40
6
20
30
40
L
ODD
AUX 3-4
10
•
10
•
10
•
10
•
AUX 5-6
=
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
PAN
R
EVEN
1 2
3
20
30
40
4
20
30
40
5
20
30
40
6
20
30
40
L
ODD
AUX 3-4
10
•
10
•
10
•
10
•
AUX 5-6
=
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
BAL
R
EVEN
1 2
3
20
30
40
4
20
30
40
5
20
30
40
6
20
30
40
L
ODD
1 2
AUX 3-4
PRE
–
10
0
3
+
3
6
•
–
10
•
10
•
10
•
AUX 5-6
=
4
0
+
3
6
–
0
5
+
3
6
–
6
0
+
3
6
PRE
BAL BAL BAL
R
EVEN
20
30
40
20
30
40
20
30
40
20
30
40
L
ODD
AUX 3-4
10
•
10
•
10
•
10
•
AUX 5-6
=
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
R
EVEN
3
4
5
6
1 2
AUX 3-4
10
20
30
40
•
10
20
30
40
•
10
20
30
40
•
10
20
30
40
•
AUX 5-6
=
L
ODD
PRE
–
6
–
6
–
6
–
6
PRE
0
+
3
0
+
3
0
+
3
0
+
3
R
EVEN
3
4
5
6
3
2 8
1
GROUP MASTERS
G1
MONITOR
G2 G3 G4
SOURCE IS
5
6
4
0
10
7
9
FADER
10
5
0
5
10
20
30
PK
SIG
AFL
PRE
3
2 8
1
ALT OUT (L-R
5
6
4
7
9
0
10
)
MUTE
1
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
2
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
3
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
4
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
5
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
6
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
7
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
8
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
9
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
10
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
11
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
12
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
S1
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
S2
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
S3
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
MUTE
S4
BUS
ASSIGN
MONO
L-R
G1-2
G3-4
PK
10
10
1 5
20
30
5
0
5
SUM
MONO
SOLO
OFF
SOURCE
SELECT
(
ADD
TAPE
IN
A1-2
MONO
L-R
G1-2
G3-4
PK
10
5
)
0
5
10
15
20
30
PK
SIG
PFL
SIG
PFL
SIG
PFL
SIG
PFL
SIG
PFL
SIG
PFL
SIG
PFL
SIG
PFL
SIG
PFL
SIG
PFL
SIG
PFL
SIG
PFL
SIG
PFL
SIG
PFL
SIG
PFL
SIG
PFL
SIG
AFL
SIG
LEFT RIGHTMONO
Bus Inputs:
Bal In @ +4dBu
XR 20
+48V
On
+48V
On
+48V
On
+48V
On
+48V
On
+48V
On
+48V
On
+48V
On
+48V
On
+48V
On
+48V
On
+48V
On
+48V
On
+48V
On
+48V
On
Bal Line InBal Line InBal Line InBal Line InBal Line InBal Line InBal Line InBal Line InBal Line InBal Line InBal Line In
+48V
On
Bal Line In
L
G3
G4
Bus In
R
G1
Bus In
+
4dBu
G2
1
2
3
Mono
1= GND
2= IN
3= IN
L
Mic In
L
S4
Mic In @–40dBu
+
Bus In @+4dBu
–
XLR Female
R
Line
In
L
Mic In
L
Mic In
R
L
R
S3
Line
In
L
R
S2
Line
Main Out
L
Mic In
R
Bal Line InBal Line InBal Line InBal Line In
12
Mic In
R
Chan Insert
11
Mic In
Chan Insert
10
Mic In
Chan Insert
9
Mic In
Chan Insert
8
Mic In
Chan Insert
7
Mic In
Chan Insert
6
Mic In
Chan Insert
5
Mic In
Chan Insert
4
Mic In
Chan Insert
3
Mic In
Chan Insert
2
Mic In
Chan Insert
1
Mic In
Chan Insert
L
Line
In
Main
Insert
R
Direct
Out
Monitor
Out
Direct
Out
Alt
Out
Direct
Out
Tape
(Line)
In
Direct
Out
Group
Out
Direct
Out
Group
Insert
Direct
Out
Aux Out -XLR
2
Direct
Out
1
Direct
Out
Aux Out -TRS
2
Direct
Out
1
Direct
Out
Aux Insert
2
Direct
Out
1
Direct
123456789101112
Out
R
S1
In
Mono
3
1= GND
2= OUT
3= OUT
T= OUT
R= G COMP
S= GND
T= IN
R= IN
S= GND
T= Send
R= Return
S= GND
T= OUT
S= GND
T= IN
S= GND
1 2
XR-20 XR-24
Main Out @+4dBu
+
Main Out @–25dBu
–
Aux Out @+4dBu
XLR Male
Direct Out
+
Aux Out
Group Out
Alt Out
Monitor Out
1/4” TRS Output
+
1/4” TRS Input
1/4” TRS Insert
Line Input @+4dBu
–
Bus In @+4dBu
Tape In @+4dBu
Chan Insert @+4dBu
Aux Insert @–2dBu
Group Insert @–2dBu
Main Inserts @–2dBu
Alt Out
Monitor Out
Tape In
RCA Jack
DEFAULT CHANNEL SETTINGS:
Direct-Out
When “PRE” Button Is Pressed,
Auxes Switch To PRE-FADER(POST-EQ
When “PRE” Button Is Pressed,
(D-O)
Aux Sends Are POST-FADER
OPTIONS FITTED
D-O Is PRE-FADER
Aux Sends Switch To:
PRE-INSERT PRE-EQ
All@
+
4dBu
All@
–
10dBV
Is POST-FADER
(✘)
:
(POST-EQ
L
R
L
R
L
R
Left
L
L
L
Right
R
Press
For
Mic Level
Sleeve = Ground
SOLO
LINK
Main Inserts:
Tip = Send
Ring = Return
OUT
Outputs: RCA= Unbal @
Inputs: RCA= Unbal @
Main Outputs:
Bal Line @ +4dBu
or
Bal Mic @ –25dBu
Use 5-Pin DIN cable to
interconnect two Consoles
)
)
IN
R
TRS= Ground Comp @ +4dBu
TRS= Bal @ +4dBu
R
–
10dBV
–
10dBV
Group Inserts @–2dBu:
Sleeve = Ground
1
2
3
4
Tip = Send
Ring = Return
4
6
Pin 2 = Driven
Pin 3 = GC Sense
Pin 1 = Ground
3
5
Aux Outputs @+4dBu:
Ground Comp
4
6
Tip = Driven
Ring = GC Sense
Sleeve = Ground
3
5
4
6
3
5
Aux Inserts @–2dBu:
Tip = Send
Ring = Return
Sleeve = Ground
Professional Audio Products
Designed and Built in the USA
Crest Audio Inc.
Paramus, NJ 07652 USA
www.crestaudio.com
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
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE
OU DE CHOC ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL
INSTALLER SUR SUPPORT DE MONTAGE SEULEMENT
NO USER SERVICABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SERVICE PERSONNEL
TO RAIN OR MOISTURE
SOUS LA PLUIE OU Á L'HUMIDITÉ
MOUNT IN RACK ONLY
X-RACK
RACK-MOUNT MIXER
02
AC IN
100-240V
50/ 60 Hz
80W
N484
L
®
COMMERCIAL
AUDIO
SYSTEM
25E9
U
C US
LISTED
ON
P
O
W
E
R
+48V ON
BAL MIC IN
BAL LINE IN
INSERT
SEND / RTN
DIRECT OUT
REAR PANEL
+48V ON
BAL MIC IN
LEFT
BAL LINE IN
BAL MIC IN
RIGHT
BAL LINE IN
REAR PANEL
XR-20 : 12 MONO / 4 STEREO
XR-24: 8 MONO / 8 STEREO
+48V
27dB
PAD
GC
+48V
27dB
PAD
27dB
PAD
FOR MODELS:
LINE
FADER
LINE
PRE
POST
FADER
X-RACK MONO INPUT MODULE
12 OR 8 MONO INPUTS AVAILABLE
GAIN
12 - 70 dB
INPUT
PREAMP
DIRECT OUT
GAIN
15 - 65 dB
INPUT
PREAMP
HPF
70Hz
-18dB/Oct
HPF
SOURCE
MONO
BAL
PRE
EQ
INPUT
SIGNAL
LED
R
PEAK
(PFL)
SIG
G
PRE
FADER
L & R
P
ROTARY
FADER
POT PAD LED
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 LINKS AND SOLDER BLOBS
DEFAULT OPTION POSITION SHOWN UNDERLINED
FREQ
LEVEL
LEVEL LEVELFREQ LEVEL
LF LOW MID HI MID HF
FOUR BAND EQ
INPUT
SIGNAL
LED
R
PEAK
(PFL)
SIG
G
X-RACK STEREO INPUT MODULE
4 OR 8 STEREO INPUTS AVAILABLE
LEVEL
FREQ
LF LOW MID HI MID HF
LF LOW MID HI MID HF
SOLO
TRIGGER
PRE-AMP
L & R
POST
FADER
L & R
SOLO
TRIGGER
POST
FADER
PRE
FADER
LEVEL LEVELFREQ LEVEL
FOUR BAND EQ - LEFT
FOUR BAND EQ - RIGHT
OUT
GC
GROUND COMP
BICOLOR
LED
DRIVER
LEFT
RIGHT
BALANCED
DRIVER
12 KHZ400 - 8 KHZ80 - 2 KHZ80 HZ
12 KHZ400 - 8 KHZ80 - 2 KHZ80 HZ
12 KHZ400 - 8 KHZ80 - 2 KHZ80 HZ
PRE
FADER
PRE
EQ
PRE
FADER
PRE
EQ
PRE
INSERT
PRE-SOURCE
MUTE
POST
FADER
FET
SWITCH
PAN
A1-2
PRE
A3-4
PRE
A5-6
PRE
A1-2
PRE
A3-4
PRE
A5-6
PRE
ELECT
SWITCH
EQ ON
CHAN
FADER
FADER AMP
+10
100MM
YES
PRE
SOURCE
MUTE ?
PRE
FADER
YES
NO
PRE
FADER
CHAN
FADER
100MM
PRE
SOURCE
MUTE ?
PRE-SOURCE
BUFFERS
NO
PRE-SOURCE
BUFFER
MUTE
FADER AMPS
LEFT
RIGHT
FITTED
LINK
USER OPTIONS
LEFT
+10
+10
RIGHT
SOLDER
BLOB
PRE
EQ
PRE-SOURCE
SELECT
EQ ON
SELECT
GAIN
AMP
PANEL
SWITCH
STANDARD OUTPUT LEVEL IS +4 dBu AT 0 VU
PIN 2 HOT ON ALL BALANCED INPUTS AND 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
TO
PEAK
CIRCUIT
MONO L-R G1-2
TO
PEAK
CIRCUIT
MONO L-R G1-2
LEFT
RIGHT
1/4” TRS
BUS ASSIGN
SWITCHES
PAN
1-2
BUS ASSIGN
SWITCHES
PAN
1-2
L & R
MIXED
L & R
MIXED
JACK
PFL
AUX SENDS
1 THRU 6
PFL
AUX SENDS
1 THRU 6
RCA
JACK
LEVEL
1-2
LEV 3
LEV 4
LEV 5
LEV 6
LEVEL
1-2
LEV 3
LEV 4
LEV 5
LEV 6
SOLO LEFT
SOLO RIGHT
SOLO DC
G3-4
SOLO LEFT
SOLO RIGHT
SOLO DC
G3-4
XLR
JACK
LEGENDS
OBE
FRANK
MAIN
RIBBON
CABLE
-
34 WA Y
ODD GROUPS FEED
LEFT SOLO, EVENS
FEED RIGHT SOLO
SOLO LEFT
SOLO RIGHT
SOLO DC
A1
A2
A3
A4
A5
A6
SOLO LEFT
SOLO RIGHT
SOLO DC
SOLO LEFT
SOLO RIGHT
SOLO DC
MONO LEFT
GROUP-TO-MAIN
ASSIGN
SWITCHES
GROUP
MIX AMP
RIGHT
AFL
AFL
AUX
MIX AMP
AFL
AUX
MIX AMPS
PEAK
(AFL)
SIG
GROUP
LED
R
G
+10
+10
X-RACK GROUPS
(1 OF 4 SHOWN)
PRE
FADER
POST
FADER
X-RACK AUX BUSES 1-2
(STEREO PAIR)
AUX 1-2
MASTER
+10
GC
X-RACK AUX BUSES 3 THRU 6
(1 OF 4 SHOWN)
AUX
MASTER
+10
GROUP
FADER
60MM
AUX 1
OUT
AUX 1
INSERT
SEND / RTN
GC
TO GROUP
MIX-AMP
GC
GC
AUX 2
OUT
AUX 2
INSERT
SEND / RTN
GROUP
BUS IN
GROUP
OUT
INSERT
SEND / RTN
AUX
OUT
GC
PEAK
(AFL)
SIG
RIGHT
BUS IN
MONO
SIGNAL
LED
R
G
X-RACK MAIN OUT
LEFT-RIGHT
L-PRE
FADER
R-PRE
FADER
X-RACK MAIN OUT
MONO
M-PRE
FADER
LEFT
FADER
100MM
RIGHT
FADER
100MM
MONO
FADER
100MM
L-POST
+10
+10
+10
FADER
R-POST
FADER
M-POST
FADER
LEFT
MIX AMP
LEFT
BUS IN
MONO
BUS IN
PEAK
SIG
L / R
SIGNAL
LED
R
G
A1
A2
A3
RIGHT
A4
A5
A6
SOLO LEFT
SOLO RIGHT
SOLO DC
MIX AMP
MONO
MIX AMP
AFL
MIC LEVEL
30dB
PAD
MIC LEVEL
30dB
PAD
MIC LEVEL
30dB
PAD
L-INSERT
SEND / RTN
LEFT
BAL OUT
R-INSERT
SEND / RTN
RIGHT
BAL OUT
M-INSERT
SEND / RTN
MONO
BAL OUT
SOLO-LINK CONNECTORS.
USE 5-PIN DIN CABLE FROM
SLAVE CONSOLE OUT
TO MASTER CONSOLE IN
X-RACK REAR PANEL:
AC INLET & SWITCH
AC IN
100-240V
50/ 60 Hz
80W
X-RACK BLK DIA-REV1.1 - 5/08/01
ON
POWER
Use 5-Pin DIN cable to
interconnect two Consoles
SOLO
LINK
IN OUT
UNIVERSAL INPUT-VOLTAGE
SWITCHING POWER SUPPLY
INTERNALLY FUSED AND
SHORT-CIRCUIT PROTECTED
SAFETY
GROUND
TO CHASSIS
SOLO-LINK:
TIES SOLO AUDIO AND
CONTROL BETWEEN
CONSOLES. SLAVE SOLOS
SHOW UP ON MASTER
CONSOLE.
CHASSIS
GROUND
POLY
FUSES
SHORT-CIRCUIT
PROTECTION
+17V
-17V
+48V
ANALOG
GROUND
+12V
AUX DC
GROUND
BNC CONNECTOR
FOR 12VOLT LAMP
( ON FRONT PANEL )
DC OUTPUT
TO POWER
DISTRIBUTION
RIBBONS
-10dBV
TAPE IN
LEFT
+4dBu
-10dBV
TAPE IN
RIGHT
+4dBu
TAPE-IN L
TAPE-IN R
TAPE-IN
TO:
PHONES
MONITOR
MONO OUT
MONO PRE
LEVEL
&
ADD
MONO
(RECESSED)
TAPE TO
AUX 1-2
TAPE TO
L/R
LEFT OUT
RIGHT OUT
ALT-OUT
SOLO
SOLO
CONTROL
LOGIC
HEADPHONE
L
R
MIX AMPS
LEVEL
SOLO
FEED
L - R
SOLO
CTRL
HEADPHONE
AMPS
TO:
PHONES,
MONITOR
METERS
LEFT OUT
&
RIGHT OUT
SOLO FEED
L - R
SOLO CTRL
AUDIO SOURCES FOR MONITOR - ALL PRE-FADER
GRP3-4
MONITOR SOURCE SELECT
( SELECTED SOURCES ADD TOGETHER )
FROM
MONITOR
L - R
SOLO DC
SOLO LEFT
SOLO RIGHT
SOLO
OFF
AUX-1 BUS
LEFT BUS
AUX-2 BUS
RIGHT BUS
TAPE
IN
TAPE-IN L
TAPE-IN R
TO
MON-L
MON-R
SOLO FEED
SOLO CTRL
LED
METERS
FOLLOW SOLO,
NORMALLY SHOW
L / R OUT
SOLOONPWR
SOLO FEED
L - R
SOLO CTRL
+9
6
3
0
-3
6
9
12
15
18
21
24
ON
TAPE INAUX1-2MONOL - RGRP1-2
SOLO OFF
LEFT
PRE-FADER
ADD
MONO
RIGHT
PRE-FADER
L
R
MONITOR
LEVEL
SUM
MONO
ALT
LEVEL
TO
PHONES
MON-L
MON-R
GCGC
ALT
OUT
GCGC
L
R
GCGC
MONITOR
OUT
GCGC
47Uf50V Elect
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