Crest 10001 schematic
8
7
6
5
4
3
2
1
VCC+
VCC-
R41
2.21K
R42
2.21K
-
6
+
7
R50
10K
13
R39
1M
-
8
+
9
CURRENT LIMITER
VCC+
11
+
10
-
1N4148
1N4148
D22
D23
R51
1M
R52
150K
R56
100
VCC-
MMBT6517
Q4
33.2K/.1%/1W
33.2K/1W
R43
2.26K/.1%
R86
0
R85
0
R44
2.26K/.1%
33.2K/.1%/1W
33.2K/1W
MMBT6520
Q5
R53
150K
R54
1M
R45
R47
R48
R46
R55
100
D14
1N4148
D15
1N4148
R38
D D
GND
CLIP
+22V
+22V
-22V
-22V
GND
OUT
IGM
GND
GND
GND
26-48-1166
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
J2
SIG IN
CONTROL LINE
SIG MON SIG MON +
C C
+VCC = +18vdc
-VCC = -18vdc
R20
576/1%
0.1/50V
R84
150K
C17
R22
100K
D4
1N4148
D5
1N4148
C18
B B
0.1/50V
R27
220
VCC+
312
3.9K
5
+
4
-
LM339D
VCC-
ATTENUATOR DRIVER
R83
200/0.5W
R82
200/0.5W
IC2B
OPA2604AU
5
+
6
-
R23
150K
C7
15pF
R25
10K
R24
10K
84
2
3
+-IC2A
SIGNAL DETECTOR
R29
2
IC3A
R28
10K
VCC+
VCC-
7
1
OPA2604AU
MLL4746
MLL4746
R26
100
Z2
Z1
1N4148
1N4148
R65
100
D21
R81
10K
D12
10K
VCC+
1
IC3B
LM339D
R49
220
14
IC3C
LM339D
R40
1M
IC3D
LM339D
C12
0.47/250V
C14
0.1/50V
Z3 MLL5258A
R57
100
R12
100K
C10 0.001/50V
R58
100
C15
0.1/50V
Z4 MLL5258A
511/1%
C13
0.47/250V
R59
511/1%
2SC2880
Q8A
MMPQ6700
R61
68.1/1%
R63
8.25K/1%
R62
68.1/1%
Q8C
MMPQ6700
2SA1200
Q6
D16
1N4148
D17
1N4148
R69
10K/5W
Q9
2SC2880
MMPQ6700
Q8B
R67
68.1/1%
R64
8.25K/1%
R68
68.1/1%
MMPQ6700
Q8D
Q10
2SA1200
Q11
MMBT5551
R74
47
D18
R71
100
R76
33K/2W
R78
2.7K
HER155
30pF
C16
R79
11K/1%/1W
R80
576/1%
R72
100
R77
33K/2W
D19
HER155
09-52-3121
09-52-3121
HI RL +
1
HI RL +
2
IGM +
3
CLIP +
4
+ VA B
5
+ VA C
6
FB
7
GND
8
NOT USED
9
- VA C
10
INTCONN
11
INTCONN
12
J1
HI RL -
1
HI RL -
2
IGM -
3
CLIP -
4
- VA B
5
- VA C
6
FB
7
GND
8
NOT USED
9
NOT USED
10
INTCONN
11
INTCONN
12
J4
R75
47
Q7
Q12
MMBT5401
R60
10K/5W
R70
R84, R85 USED REV -04
D11 NOT USED TILL REV 0?
01-25-94 CHANGED R29 FROM 2.2K TO 3.9K
5/7/96 UPDATED SCHEMATIC I.F.
CHANGED Q6,Q9 FROM MMBT5551 TO 2SC2880
CHANGED Q7,Q10 FROM MMBT5401 TO 2SA1200
CHANGED Q4 FROM MMBT5551 TO MMBT6517
CHANGED Q5 FROM MMBT5401 TO MMBT6520
A A
CREST AUDIO
100 EISENHOWER DRIVE
PARAMUS, NJ 07652
Title
10001 PREAMP
Size Document Number Rev
C
8
7
6
5
4
3
Date: Sheet of
2
0 0Monday, May 15, 2000
1
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