Crest 10004, 10k4 Input board Schematic
8
7
6
5
4
3
2
1
J7
+22 V
GND
-22 V
10K/0.1%
10K/0.1%
DATA A
CONTROL
R3
R5
12345678910111213
SERVO A
SERVO SEND CH A
ATTENUATION VOLTAGE
TO MODULE A
RETURN FROM VR
220K
470pF
R13
C14
9.4/5%/50V
SERVO/HIGH PASS
20K/1%
R23
9.76K/1%
IC3A
OPA2604AU
R21
84
2
-
1
3
+
C12
C10
84
IC1A
3
OPA2604AU
+
2
-
R15
9.4/5%/50V
1
R19
750/1%
10K/0.1%
R33
R17
10K/1%
1.5K/1%
1N4148
D15
1N4148
D16
2.2K
R25
D2
1N4148
R7
13.3K/0.1%
D4
1N4148
D6
1N4148
C5
30pF
OUTPUT TO VR+27V
+22V CH A
C8 30pF
13.3K/0.1%
OPA2604AU
D8
1N4148
-22V CH A
IC1B
0.1/50V
R9
6
-
7
5
+
R11
C1
100K
14
26-48-1146
+27 V
GND
VR GND
VR SEND
GND
VR RET
GND
TO AMP
D D
- RETURN
PL08
1
GND CH A
2
DATA CH A
3
+22V
4
5
+RETURN
6
+ SEND
7
- SEND
8
J5
1
22-54-1205
2
3
4
5
J9
21
3
J1
NC3FD
2
3
J3
NC3MD
1
D9
1N4001
D10
1N4001
D11
1N4001
D12
1N4001
GND
DATA CH A
+27 V
-22 V
+22 V
- SIG IN
+ SIG IN
0.1/50V
C2
C C
R41
150/1W
J8
BALANCED INPUT/GAIN CH A
14
26-48-1146
+27 V
GND
VR GND
VR SEND
GND
VR RET
GND
TO AMP
D13
1N4001
D14
- RETURN
1
GND CH B
2
DATA CH B
3
-22V
4
+27V
5
+ RETURN
6
PL08
+ SEND
7
- SEND
8
J6
1
22-54-1205
2
3
4
5
J10
21
3
J2
NC3FD
B B
2
1N4001
SW1
MODE SWITCH
MSSA2350
3
J4
NC3MD
1
GND
+22 V
+27 V
-22 V
DATA CH B
- SIG IN
+ SIG IN
0.1/50V
10K/0.1%
10K/0.1%
C3
12345678910111213
GND
-22 V
+22 V
DATA B
CONTROL
SERVO B
150/1W
R4
D1
1N4148
R6
R8
13.3K/0.1%
BALANCED INPUT/GAIN CH B
ATTENTUATION VOLTAGE
SERVO SEND CH B
R40
TO MODULE B
- 18V
RETURN FROM VR
OUTPUT TO VR
+22V CH B
D7
1N4148
C7 30pF
R10
13.3K/0.1%
-
6
+
5
OPA2604AU
IC2B
D3
1N4148
D5
1N4148
C6
30pF
-22V CH B
0.1/50V
C16
0.1/50V
+ 18V
Z2
MLL4745
R27
10K
R28
47K
C17
10/50V
R14
220K
MLL4745
C9
7
100K
R12
470pF
84
IC2A
OPA2604AU
3
+
2
-
R16
10K/0.1%
R18
C4
10K/1%
R35
750/1%
R29
3.3K
R34
Z1
1.5K/1%
9.4/5%/50V
1
D17
1N4148
750/1%
R43
47K
C11
R20
R37
499/1%
3.3K
1
2
3
4
5
6
7
8 9
IC4
NE5517AN
SERVO/HIGH PASS
20K/1%
C13
9.4/5%/50V
D18
1N4148
499/1%
R30
16
15
14
13
12
11
10
0.1/50V
R22
6
5
OPA2604AU
C15
9.76K/1%
R38
R32
47K
R24
-
+
IC3B
2.2K
R36
750/1%
R31
10K
R42
47K
C18
10/50V
7
R26
R7 - R10, R21 - R24, C11 - C14
A A
CREST AUDIO
100 EISENHOWER DRIVE
PARAMUS, NJ 07652
Title
10K1/10K/4 XLR
Size Document Number Rev
C
8
7
6
5
4
3
Date: Sheet
2
of
0 0Friday, May 19, 2000
1
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