Service Manuals, User Guides, Schematic Diagrams or docs for : . Various SM scena Crest 4801 set
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8 7 6 5 4 3 2 1
R8 VCC+
VCC+ 10K
R34 R35
R6 R9 499/1% 750/1%
D1
10K
1N4148 1K Z1 1N5353
R1 Q1 VCC+
2N5401
15K Q2
R3 2N5551 R36 C14 470uF
R2 MPSA75 C2 R31
330K 10K 47/35V 3.3K R65
C1 4.7K
Q3 1 16
100/35V R10 D3 C16 470uF NOTE 3
D
2 15 D
1N4148 3 14
100K R32
4 13
R4 R5 R7 R11 D2
1.5K/1% 5 12
VCC- D13 C18
4.7K 10K 22K 1N4148 6 11
22K TURN ON DELAY 7 10
8 9 0.47/250V R59 R69
1N4148 R33 C20 511/1% NOTE 1
IC4 R37
R13 22K NE5517AN 47K 0.1uF
Q14
13 2N5551
12 220K
11 R30 C13
10 C5 R83
VCC+ Z3 1N5938
9 47K 10/35V
470pF Q10 R73
8 C3 0.1/50V NOTE 4 VCC- Q6 2N5551
7 2N5551 0
6 C6 30pF
5 R74
D5
4 ATTENUATION/MUTE
1N4148
3 SIP1A SIP1B R57 Q8 47
2N5551
2
8
2N5551
1 10K/0.2% 10K/0.2% 100 Q12
3
D4 D6 + D18
J2-M 6 - 1
26-48-1135 1N4148 1N4148 7 2 R61 R67
SIP1C - IC1A
5 +
R45 100K/0.1%
IC1B NE5532AN 68.1/1% 68.1/1%
- 8 SF14
10K/0.2% NE5532AN
4
14
D7 R15
+ 9 R71 R76
1N4148 IC3C
LM339N 100 NOTE 2
10K/1%
R39 R63 R64
C22
SIP1D R14 SELECTED R41 R43 R47 8.25K/1% 8.25K/1% R78
10K/0.2% C4 C7 10K/1% 100K/0.1%
VCC- 1K/0.1% 1K/0.1%
30pF 0.1/50V C8 1
VCC- 2.7K
2.2/5%/100V 30pF 2
3
4
D16 R79 5
C BALANCED INPUT/GAIN C
6
1N4148 11K/1%/1W 7
8
9
VCC 10
R19 D17 R80 11
R38 12
C9 2.2/5%/100V R17 4.7K 10K 1N4148 549/1% 13
VCC+
10K 14
R40 15
R20 R42 R44 R48 16
SELECTED
549/1% 1K/0.1% 100K/0.1% 17
8
1K/0.1%
R16 R72 R77
2 100 NOTE 2 J1-F
-
1 - 6 09-52-3172
150K
3 1
+ IC2A D19
+ 7 R62 R68
SPEAKER RC4559 IC3B
D8 D9 R18 LM339N 68.1/1%
15 R46 100K/0.1% 68.1/1%
4
SIGNAL 1N4148 1N4148
14 2.2K
CLIP SF14
CONTROL 13 VCC- C10
12 R58 Q9 2N5401
11 2N5401
10 100 Q13 R75
9 0.001/50V
SPEAKER 8 SERVO/HIGH PASS CURRENT LIMITER 47
7
6 2N5401 Q11
5 2N5401
LIMIT 4 Q7
MUTE 3 R55
2
1 2.2K
R27 VCC+ Q15
J3-M Z4 1N5938
2N5401 2N5401
26-48-1155 2.2K C21
Q5
0.1uF R60 R70
D21 511/1% NOTE 1
C11 VCC+ 1N4148 R81 R53 C19
B 1/50V R51 100K B
R24 10K R49 R50 1M 0.47/250V
2.2K 10K
VCC+ D14
R22 10K 680K R26
R21 1K D20 R29 11 1N4148
NOTE 4 +
13 R66
5 10 D15
100K + 2.2K IC3D -
D10 1N4148 7 LM339N 1N4148
R82 C17 470uF
3
NOTE 3
VR1 6
NOTE 4 - IC2B
RC4559 5 R54
+
2 R52 1M
NOTE 4 D11 1N4148 R25 4 IC3A
- 100K C15 470uF
LM339N
12
R23 10K 680K VCC- VCC-
VCC- VCC-
Z2 1N5353
C12 1/50V D12 2N5551
R28
Q4
10K R56
1N4148
2.2K
SIGNAL DETECTOR ATTENUATOR DRIVER CLIP DETECTOR AMPLIFIER FRONT END/IC POWER SUPPLY
NOTE 3: 750 10W ON MODELS 8001, CV601
NOTE 1: 8.2K 2W ON MODELS 8001, 7001, CV601
680 10W ON MODEL 7001 REV NOTES 7/15/93
6.8K 2W ON MODELS 6001, 4801
620 10W ON MODEL 6001 (1) DELETE R12
4.3K 2W ON MODEL 4601
560 10W ON MODELS 4801, MA5850
5.6K 2W ON MODELS CC301/300
1.1K 10W ON MODEL 4601
3.3K 2W ON MODELS CV301, CC151, 3301
560 10W ON MODELS CC301
NOTE 2: 27K 2W ON MODELS 8001, 7001, CV601
A 1K 10W ON MODELS CV301, 3301 A
20K 2W ON MODELS 6001, 4801, CC301
360 10W ON MODEL CC151
16K 2W ON MODEL 4601
NOTE 4: R82, R83, D20, VR1 ARE USED ON MODEL MA5850 ONLY
15K 2W ON MODELS CV301, CC151, 3301
NOTE 5: PRIOR TO 6-2-92 R65, R66 WERE 1K/10W ON MODEL CC151
CREST AUDIO INC.
150 Florence Ave.
Hawthorne, NJ 07506
1.1K 10W ON MODEL 4601
Title
560 10W ON MODELS CC301 PRO-LINE PREAMP/FRONT END
1K 10W ON MODELS CV301, CC151, 3301 Size Document Number Rev
C 21C1124-02 02
NOTE 4: R82, R83, D20, VR1 ARE USED ON MODEL MA5850 ONLY
Date: Friday, May 19, 2000 Sheet 1 of 0
8 7 6 5 4 3 2 1
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