Crest Audio CA12 Schematic

3097.SCH-1 - Fri Aug 29 15:32:24 2003

3097.SCH-2 - Fri Aug 29 15:32:58 2003

8

7

6

5

4

3

2

1

SERVO SEND CH A

VR SEND B

1

VR GND

2

VR RET B

3

J7A

22-29-2031

22-29-2031

D D

TO DISPLAY PCB

PHONEJACK STEREO

VR RET A

1

VR GND

2

VR SEND A

3

J7B

21

3

J1

NC3FD

- SIG IN

+ SIG IN

J3

STEREO/BRIDGE

R3

10K/1%

R5

10K/1%

48.7K/1%

SW1

123

C&K TS01

D2

1N4148D61N4148

R7

RETURN FROM VR

OUTPUT TO VR

1N4148

D4

33pF/50V

48.7K/1%

1N4148

D8

C5

33pF/50V

BALANCED INPUT/GAIN CH A

C8

R9

6

-

5

+

NJM5532M

+15.5V

R138

R129

3.9K

IC103A
LM339D

R128

10K

10K

2

D121
1N4148

R2

10K/1%

-

6

7

+

5

IC3B

+20.5V

R13

220K

C10

470pF/50V

R11

100K

7

C2

0.1/25V

84

IC1A
NJM5532M

3

+

1

2

-

IC1B

C1

0.1/25V

-20.5V

NJM5532M

2.2/5%/63V

R19

220K

1N4148

D15

R1

10K/1%

C12

C14

2.2/5%/63V

1N4148

SERVO/HIGH PASS

576/1%

NJM5532M

D16

R120

R21

10K

R23

2.7K
+20.5V

84

IC3A

2

-

3

+

TO MODULE A

ATT. VOLTAGE

1

-20.5V

+15.5V

312

5

+

4

-

-15.5V

ATTENUATOR DRIVER

OTA CH B

OTA CH B

1K/1%

+15.5V

R35

R33

1K/1%

R37
576/1%

0.1/25V

R38

R36

1K/1%

576/1%

C16

C19

0.22/16V

IGM VALUES WILL BE CONFIRMED AFTER PROTO BUILD

1
2
3
4
5
6
7
8 9

IC4

NE5517AD

R34
1K/1%

-15.5V

ATTENUATOR

C11

2.2/5%/63V

1N4148

D17

1N4148

R30

2.7K

16
15
14
13
12
11
10

D20

1N4148

R20

220K

2.2/5%/63V

D18

SERVO/HIGH PASS

R31

10K

C20

0.22/16V

OTA CH A

OTA CH A

R32
47K

C13

22/35V

R220

576/1%

R24 2.7K

6

-

5

+

NJM5532M

NJM5532M

C18

10/50V

C22

Z2

MLL4732

ATT. VOLTAGE

SERVO SEND CH B

TO MODULE B

R22

10K

D221

R229

3.9K

R228

10K

IC203A
LM339D

1N4148

2

+15.5V

R238
10K

7

+20.5V

IC5B

84

2

-

IC5A

1

3

+

+15.5V

312

5

+

4

-

-20.5V

-15.5V

R29

C C

GND

+20.5V

1 2

3 4

5 6

+20.5V

OTA CH B-15.5V+15.5V

-20.5V

OTA CH A

J8
CA-20H-2B-S

TO PWR SUPPLY

7 8

9 10

11 12

13 14

15 16

17 18

19 20

OTA CH A

R7-R9 IS BASED ON 700 WATTS @ 8 OHMS

Z1

GND

J2

NC3FD

-20.5V

-15.5V

OTA CH B

OUTPUT TO VR

RETURN FROM VR

+18V CH B

D3

1N4148

D5

D1

1N4148

C6

R8

33pF/50V

- SIG IN

3

+ SIG IN

10K/1%

10K/1%

R4

1N4148

R6

48.7K/1%

0.1/25V

C7

33pF/50V

R10

48.7K/1%

84

2

-

1

3

+

IC2A

NJM5532M

D7

1N4148

C4

-20.5V

BALANCED INPUT/GAIN CH B

+15.5V

21

B B

J4

PHONEJACK STEREO

470pF/50V

R12

100K

MLL4732

R14

220K

C9

R27

10K

C17

10/50V

+20.5V

5

6

NJM5532M

2.7K

D19

1N4148

R28
47K

C21

0.1/25V

C15

22/35V

C3

0.1/25V

+

7

-

IC2B

ATTENUATOR DRIVER

A A

IC103C
LM339D

+15.5V

IC103B

LM339D

IC203C
LM339D

+15.5V

IC203B
LM339D

-15.5V
R139

825K/1%

-

8

14

+

9

R141

2K21/.1%

R140

825K/1%

R142

2K21/.1%

-

6

1

+

7

33.2K/.1%.5W

243K/1%

1N4148

1N4148

243K/1%

D122

D123

33.2K/.1%.5W

R125

R126

R131

R130

33.2K/.1%.5W

R143
2K29/0.1%

R144
2K29/0.1%

33.2K/.1%.5W

R132

0.1/200V

0.1/50V

68.1/1%

22/35V

R133

Z100 MLL4752

CURRENT LIMITER

R155

IC103D
LM339D

+15.5V

11

+

13

10

-

R151

1M

R152
100K

R156

68.1/1%

MMBT5551

Q104

-15.5V

MMBT5401

Q105

R153
100K

R154
1M

D114

1N4148

D115

1N4148

68.1/1%
C110 0.001/50V

C118

22/35V

Z101 MLL4752

C115

0.1/50V

C113

0.1/200V

CLIP DETECTOR CH A DRIVER

-15.5V
R239

825K/1%

-

8

14

+

9

R241

2K21/.1%

R240
825K/1%

R242

2K21/.1%

-

6

1

+

7

33.2K/.1%.5W

243K/1%

1N4148

1N4148

243K/1%

D222

D223

R231

33.2K/.1%.5W

R225

R226

R230

33.2K/.1%.5W

R243
2K29/0.1%

R244
2K29/0.1%

33.2K/.1%.5W

R232

0.1/200V

0.1/50V

68.1/1%

22/35V

R233

Z200 MLL4752

CURRENT LIMITER

R255

IC203D
LM339D

R251

1M

R252
100K

R256

68.1/1%

MMBT5551

Q204

-15.5V

MMBT5401

Q205

R253
100K

R254
1M

68.1/1%

D214

1N4148

D215

1N4148

+15.5V

11

+

13

10

-

C210 0.001/50V

C218

22/35V

Z201 MLL4752

C215

0.1/50V

C213

0.1/200V

CLIP DETECTOR

8

7

6

5

4

3

+HI RL

C112

R159
576/1%

C114

2SC3645

R157

C117

R158

68.1/1%

Q106

Q108A
MMPQ6700

R161

68.1/1%

R163

8.25K/1%

D116

1N4148

D117

1N4148

R162

68.1/1%

Q108C
MMPQ6700

2SA1415

Q107

R160
576/1%

1.5K/1W

Q109
2SC3645

MMPQ6700

Q108B

R167

68.1/1%

68.1/1%

R164

8.25K/1%

68.1/1%

R168

68.1/1%

MMPQ6700

Q108D

Q110
2SA1415

R174

Q111
MMBT5551

R176

47

D100

R171

R172

R149
56K/3W

R178

2.7K

HER155

33pF/500V

R179

11K/1%/1W

R180

576/1%

R175

1.5K/1W

D101

C116

J101

CREST # ?

+LO RL

1

+HI RL

2

+IGM

3

+CLIP

4

+VA B

5

+VA C

6

GND

7

GND

8

NOT USED

9

FB

10

FB

11

-VA C

12

-VA B

13

-CLIP

14

-IGM

15

-HI RL

16

-LO RL

17

HER155

R177

47

Q112
MMBT5401

-HI RL

+HI RL

C212

R259
576/1%

C214

2SC3645

R257

C217

R258

68.1/1%

Q206

Q208A
MMPQ6700

R261

68.1/1%

R263

8.25K/1%

D216

1N4148

D217

1N4148

R262

68.1/1%

Q208C
MMPQ6700

2SA1415

Q207

R260
576/1%

1.5K/1W

Q209
2SC3645

MMPQ6700

Q208B

R267

68.1/1%

68.1/1%

R264

8.25K/1%

68.1/1%

R268

68.1/1%

MMPQ6700

Q208D

Q210
2SA1415

R274

Q211
MMBT5551

R276

47

D200

R271

R272

R249
56K/3W

R278

2.7K

HER155

33pF/500V

R279

11K/1%/1W

R280

576/1%

R275

1.5K/1W

D201

C216

J202

CREST # ?

+LO RL

1

+HI RL

2

+IGM

3

+CLIP

4

+VA B

5

+VA C

6

GND

7

GND

8

NOT USED

9

FB

10

FB

11

-VA C

12

-VA B

13

-CLIP

14

-IGM

15

-HI RL

16

-LO RL

17

HER155

R277

47

Q212
MMBT5401

-HI RL

CH B DRIVER

CREST AUDIO

100 EISENHOWER DRIVE
PARAMUS, NJ 07652

Title

CA12 PREAMP

Size Document Number Rev

D

PREAMP12.CA

2

Date: Sheet

1

0 0Wednesday, May 17, 2000

of

8

D D

7

6

C46

0.047/250V

2SC3281

Q38

5

2SC3281

Q40

2SC3281

Q42

4

2SC3281

Q44

2SC3281

Q36

3

D41

HER155

C37
150pF

2SC2336BQ

Q20

R162

2

+135V.

C44

1K

22/160V

C41

1.5/250V

1

J4-M

PIGTAIL

1
2
3
4
5

R93

51/1W/2%

Q16
2SA1006BQ

R14

R91
220

J1-M

1
2

C C

3
4
5
6
7
8

9
10
11
12
13
14
15
16
17

R100

10/1W

CUSTOM MOLEX

B B

PTC15LB/250

51/1W/2%

C28

1200pF

VR2

R90
510

R92

C31

330PF

Q15
2SC2336BQ

22

TIP117

R94

4.7/1W

C29

0.1/100V

D30
HER155

R143
51/0.5W

C30

100/6.3V

330PF

150/1W

150/1W

R103

R102

C39

D29
HER155

Q17

C38

330PF

R142
51/0.5W

D28

R89

4.7/1W

HER155

R139

10/1W

Q22
2SC2336BQ

10/1W

R97 13K

C33

0.0047/100V

R101
100/2W

C32

0.0047/100V

R96 13K

10/1W

Q21
2SA1006BQ

R138
10/1W

R147

R146

1N4148

1N4148

R99
39K

R163
10/1W

Q24
2SC3281

2.2/1W

R104
22/2W

R123

Q26
2SC3281

R122

0.33/5W

R125

2.2/1W

R151

0.2/5W

Q28
2SC3281

R124

0.33/5W

R127

2.2/1W

R153

0.2/5W

Q30
2SC3281

R126

0.33/5W

R129

2.2/1W

R155

0.2/5W

Q32
2SC3281

R128

0.33/5W

R131

2.2/1W

R157

0.2/5W

Q34
2SC3281

R130

0.33/5W

D33
HER155

R149

10/1W

D35
HER155

51/0.5W

R145

R120
20K/1W

Z9

1N5927C

R137
100/0.5W

R135
1K

D39
1N4004

C35
47/16V

D43
HER155

R133

3.9K

D37

D36

R109

2.2/1W

Q23
2SA1302

R98
39K

R164

10/1W

C45

0.047/250V

R110

0.33/5W

Q25
2SA1302

R111

2.2/1W

R112

0.33/5W

Q27
2SA1302

R150

0.2/5W

2SA1302

Q37

R113

2.2/1W

R114

0.33/5W

Q29
2SA1302

R152

0.2/5W

2SA1302

Q39

R115

2.2/1W

R116

0.33/5W

Q31
2SA1302

R154

0.2/5W

2SA1302

Q41

R117

2.2/1W

R118

0.33/5W

Q33
2SA1302

R156

0.2/5W

2SA1302

Q43

D32
HER155

D34

HER155

R148

10/1W

2SA1302

Q35

Z8

1N5927C

R119
20K/1W

R136
100/0.5W

2SA1006BQ

Q19

C34
47/16V

R132

3.9K

D38
1N4004

R134
1K

D42
HER155

R161

1K

C36
150pF

D40

HER155

R159

2.2K/0.5W

D45

BYV79

220/80V

C42 2200pF

220/80V

D44

BYV79

R158

2.2K/0.5W

C43
22/160V

R141

390/5W

+67V.

C48

C47

C50

2.2/100V

C49

2.2/100V

-67V.

R140
390/5W

OUT

J6-M

PIGTAIL

J5-F

PIGTAIL

1
2

5
4
3
2
1

C40

1.5/250V

-135V.

1
2
3

J7

PIGTAIL

A A

IC5

32

1

LM35DP

R165

2.2K

CREST AUDIO

150 Florence Ave.
Hawthorne, NJ. 07506
Title

CA-12 OUTPUT PCB

Size Document Number Rev

21C0929

C

8

7

6

5

4

3

Date: Sheet

2

of

0 1Wednesday, May 17, 2000

1

8

U15/400/KTAK

1
2
3
4

J10

10-84-4040

D D

10-84-4040

1
2
3
4

J11

C12

C13
U15/400/KTAK

470/50/ELRZ

F1

2
1

3A/MINI

26-48-1025

J14

BR3
RS202

BR1
SEE CHART

BR2
SEE CHART

C11

7

1N5255

Z19

28V

C3

SEE CHART

C4

SEE CHART

C5

SEE CHART

C6

SEE CHART

R49

1K

SEE CHART

SEE CHART

SEE CHART

SEE CHART

Q15

TIP120

10/35/ELRM

6

1
2

CH A IN CH B IN

C7

C8

R52

SEE CHART

C9

R51

SEE CHART

C10

3
4
5
6

J13

10-84-4060

CH A CH B

CA 6 100/25W
CA 9 150/25W

1000/25/ELRZ

CA 6 100/25W
CA 9 150/25W

C15

1000/25/ELRZ

C14

470/50/ELRZ

C20

UNREGULATED 35V

5

1
2
3
4
5
6

J12

10-84-4060

+16.8V

Z11

1N5338

Z13

1N5338

Z15

1N5338

2R2/1

2R2/1

R55

R56

2R2/1

R53

R54

2R2/1

+22.4V

Z10

C16

1N5338

5.1V

-22.4V

Z9

1N5338

-16.8V

Z12

1N5338

Z14

1N5338

Z16

1N5338

5.1V

+20.5V

+15.5V

-20.5V

-15.5V

100/25/ELRM

4

1

2

100/25/ELRM

15

13

C17

3

TEMP PWR CH A

TEMP OUT CH A

J2

1 2

3 4

5 6

7 8

CA-20HM-2F-S

9 10

11 12

13 14

15 16

17 18

19 20

TO PREAMP

OTA CH A

TEMP GND CH A

TEMP PWR CH B

TEMP OUT CH B

TEMP GND CH B

OTA CH B

C18

100K

R61

C25

10/35/ELRM

1
2
3

J4

24-165

TO MODULE CH A

1
2
3

J3

24-165

TO MODULE CH B

+27V

R59

D15

1N4148

R57
10K

R63
10K

4K7

84

IC1A

3

+

1

2

-

LM358

1U/50/ELRM

430K

Q13

TIP120

R73

2.4K

R65

26-48-1025

FAN CH B

J7

1
2

C21

D16

1N4148

R58
10K

2

CLIP CH B
SIGNAL CH B
ACTIVE CH B

5

+

6

-

R64

10K

GROUND

IC2B

+27V

7

LM358

R66

430K

1U/50/ELRM

1 2
3 4
5 6
7 8
9 10

J5

10-88-1101

TO DISPLAY PCB

Q14

TIP120

R60

4K7

R74

2.4K

C22

LED GROUND
CLIP CH A
SIGNAL CH A
ACTIVE CH A
INRUSH

26-48-1025

FAN CH A

1

J8

1
2

CLIP CH B

SIGNAL CH B

R5
10K

Q3

R11

100K

Q5
2N5551

MPSA75

CLIP

C C

OTA CH B

R9

10K

R7

10K

D1

1N4148

OTA CH B

1N4148

Q1
2N5551

SIGNAL

D3

R13

10K

-15.5V -15.5V

100K

Q7

R17

1N4148

D5

RLY OPEN MUTE

2N5551

R19

100K

C29

U1/50/CZAM

R15

33K

GROUND

5K0/5

TR1

R21

C1

470/6.3/ELRM

MAC97A

J1

2
1

26-48-1025

TRANS TEMP

B B

TEMP PWR CH B TEMP PWR CH A

GROUND

LED GROUND

TEMP GND CH B

R25

4K7

D17

1N4148

(REV 2 ONLY) (REV 2 ONLY)

GROUND

R27
3K9

100K

R23

TRANSFORMER TEMP

D7

1N4148

C27

100/25/ELRM

R29
10K

Z3

1N5242

R31

243

TEMP SENSOR OUT

D9

IC1B

7

TEMP/DC

-

6

+

5

1N4148

1N821

Z7

R39

1K82

R47
2K2

6

2N5551

Z5

Q9

R33

1N4713

+20.5V +20.5V

+20.5V VERIFY +20.5V VERIFY

30V

47K

1N4001

D19

LM358

R37

1M

ACTIVE CH B

MPSA75

Q11

ACTIVE

A A

+27V

8

R43

1K82

Z1

1N4749A

R45

191

7

(24V) (24V)

REV NOTE 2/14/94 CHANGED C21, C22 TO 10/50V
REV NOTE 2/24/94 CHANGE Z17,Z18 FROM 1N5230 TO 1N5927
REV NOTE 2/24/94 CHANGE C21,C22 FROM 10/50V TO 0.1/50V
REV NOTE 2/24/94 CHANGE R65,R66 FROM 390K TO 430K
REV NOTE 2/24/94 CHANGE R35,R36 FROM 100R TO D19,D20 1N4001
REV NOTE 2/24/94 CHANGE 1C1,1C2 FROM LM393 TO LM358
REV NOTE 2/24/94 DELETED R73, R74
REV NOTE 2/28/94 REV 3 ONLY DELETE D17, D18 AND ADD Z1,Z2

CLIP CH A

SIGNAL CH A

OTA CH A

TEMP GND CH A

TEMP OUT CH ATEMP OUT CH B

ACTIVE CH A

+27V

R6
10K

R10

10K

R8

10K

1N4148

D2

1N4148

OTA CH A

Q2
2N5551

SIGNAL

D4

R14

10K

R12

100K

Q6
2N5551

Q4
MPSA75

CLIP

-15.5V-15.5V

100K

Q8

R18

D6

1N4148

2N5551

R20

100K

RLY OPEN MUTE

C28

U1/50/CZAM

R16
33K

GROUND

5K0/5

TR2

R22

C2

470/6.3/ELRM

MAC97A

R24

-20.5V-20.5V

-20.5V VERIFY-20.5V VERIFY

100K

D8

1N4148

GROUND

D18

R26

4K7

1N4148

R28
3K9

C26

100/25/ELRM

R30
10K

1N5242

R32

Z4

243

TEMP SENSOR OUT

D10

IC2A

-

2

1

+

3

1N4148

8 4

R38

1M

3

1N821

(6.2V)(6.2V)

R40

1K82

Z8

R48

2K2

2N5551

Z6

1N4713

30V

Q10

R44

1K82

R34
47K

MPSA75

Q12

ACTIVE

REV NOTE 3/28/94 CHANGED C21,C22 TO 1UF/50V
REV NOTE 3/28/94 CHANGED Z17,Z18 TO R73,R74 2.4K
REV NOTE 6/8/94 CHANGED C21, C22 FROM 1UF/50V TO 0.47UF/100V

5

R46

191

4

1N4001

Z2

1N4749A

(REV 3 ONLY)(REV 3 ONLY)

D20

LM358

TEMP/DC

L1

3uH

R67

1/10

R69

10/10

U047/630/KTRK

C23

SPKR. RAIL CH. B

L2

3uH

R68

1/10

R70

10/10

U047/630/KTRK

C24

CHART OF VALUES

R51,R52 100/25W 150/25W

BR1,BR2 MB352W

BR1,BR2 55--31

C3,C4,C5,C6

C7,C8,C9,C10

NOT USED REF DES:

R1,R2,R3,R4,R35,R36,R41,R42,R50,R62
Z1,Z2 J9

LAST REF DES USED:

C30,D20,J14,Q15,R74,Z19

SPKR. RAIL CH. B

D14

1N4001

RL1
FRL-24

1N4001

D11

D12

1N4001

RL2

FRL-24

D13

1N4001

R72

51/W5

CA-6 CA-9REF DES CA-12

MP14020W ED2478

17000/55V 10000/67V

Z17,Z18

CREST AUDIO

100 EISENHOWER DRIVE
PARAMUS, NJ 07652

Title

Size Document Number Rev

C

Date: Sheet

2

10000/67V

CA SERIES POWER SUPPLY

21C1895

CH B IN

OUT B

INRUSH

CH A IN

OUT A

R71
51/W5

175/25W

15000/70V

15000/70V

XX

of

0 0Wednesday, May 17, 2000

1

8

7

6

5

4

3

2

1

SERVO SEND CH A

VR SEND B

1

VR GND

2

VR RET B

3

J7A

22-29-2031

22-29-2031

D D

TO DISPLAY PCB

PHONEJACK STEREO

C C

+20.5V

+20.5V

+15.5V

VR RET A

1

VR GND

2

VR SEND A

3

J7B

21

3

J1

NC3FD

- SIG IN

+ SIG IN

J3

GND

1 2

3 4

5 6

GND

OTA CH B-15.5V+15.5V

-20.5V

OTA CH A

J8
CA-20H-2B-S

TO PWR SUPPLY

7 8

9 10

11 12

13 14

15 16

17 18

19 20

OTA CH A

-20.5V

-15.5V

OTA CH B

- SIG IN

21

3

J2

B B

NC3FD

+ SIG IN

J4

PHONEJACK STEREO

STEREO/BRIDGE

J9

123

22-29-2031

RETURN FROM VR

OUTPUT TO VR

D4

10K/1%

10K/1%

R3

R5

R7

NOTE 1

1N4148

1N4148

D2

D6

1N4148

C5

33pF/50V

BALANCED INPUT/GAIN CH A

NOTE 1:

CHART OF VALUES

R7,R8,R9,R10

R149,R249 43K/3W 56K/3W

R143,R144,R243,R244 2K29/0.1%2K32/0.1%

R125,R126,R225,R226

OUTPUT TO VR

RETURN FROM VR

D3

1N4148

D5

D1

1N4148

C6

R8

33pF/50V

10K/1%

10K/1%

R4

1N4148

R6

NOTE 1

0.1/25V

33pF/50V

NOTE 1

6

5

OPA2604AU

D8

1N4148

CA-6 CA-9REF DES

34K/1%

1M1/1%

+18V CH B

C4

BALANCED INPUT/GAIN CH B

C8

R9

-

+

33pF/50V

R10

NOTE 1

D7

1N4148

+15.5V

R138

R129

3.9K

IC103A
LM339D

R128

10K

10K

2

D121

1N4148

R2

10K/1%

-

6

7

+

5

IC3B

+20.5V

R13

220K

C10

470pF/50V

R11

100K

7

C2

0.1/25V

84

IC1A
OPA2604AU

3

+

1

2

-

IC1B

C1

0.1/25V

-20.5V

OPA2604AU

2.2/5%/63V

R19

220K

1N4148

D15

R1

10K/1%

C12

C14

2.2/5%/63V

OPA2604AU

1N4148

SERVO/HIGH PASS

R120

576/1%

R21

10K

R23

2.7K
+20.5V

84

IC3A

2

-

3

+

D16

TO MODULE A

ATT. VOLTAGE

1

-20.5V

+15.5V

312

5

+

4

-

-15.5V

ATTENUATOR DRIVER

OTA CH B

16
15
14
13
12
11
10

C16

0.1/25V

1N4148

2.2/5%/63V

R38

R36

1K/1%

576/1%

R31

10K

D20

OTA CH A

R32
47K

576/1%

C13

R220

R22

10K

R24 2.7K

6

5

OPA2604AU

OPA2604AU

22/35V

-

+

C18

10/50V

Z2

C22

MLL4732

7

+20.5V

IC5B

84

2

-

IC5A

3

+

-20.5V

1

C19

0.22/16V

OTA CH A

C20

0.22/16V

ATT. VOLTAGE

TO MODULE B

SERVO SEND CH B

R229

3.9K

R228

10K

IC203A
LM339D

D222

1N4148

2

+15.5V

R238
10K

+15.5V

312

5

+

4

-

-15.5V

R35

OTA CH B

1K/1%

+15.5V

43.2K/1%

R27

10K

NOT USED

C17

10/50V

Z1

MLL4732

22/35V

R14

+20.5V

220K

C7

0.1/25V

C9

2

3

84

-

+

OPA2604AU

470pF/50V

1

IC2A

R12

100K

5

+

6

-

OPA2604AU

IC2B

-20.5V

R33

R37

1K/1%

576/1%

1
2
3
4
5
6
7
8 9

IC4

NE5517AD

R34
1K/1%

-15.5V

ATTENUATOR

C11

2.2/5%/63V

R20

220K

R30

2.7K

R29

2.7K

D19

1N4148

R28
47K

0.1/25V

C15

C21

C3

7

D18

1N4148

D17

1N4148

SERVO/HIGH PASS

ATTENUATOR DRIVER

A A

IC103C
LM339D

+15.5V

IC103B

LM339D

IC203C
LM339D

+15.5V

IC203B
LM339D

-15.5V
R139

825K/1%

-

8

14

+

9

R141

2K21/.1%

R140
825K/1%

R142

2K21/.1%

-

6

1

+

7

33.2K/.1%.5W

NOTE 1

1N4148

1N4148

NOTE 1

R125

D122

D123

R126

R131

R130

33.2K/.1%.5W

33.2K/.1%.5W

R143
NOTE 1

R144
NOTE 1

33.2K/.1%.5W

R132

R133

CURRENT LIMITER

R155

R151

1M

R152
100K

MMBT5551

Q104

R156

68.1/1%

-15.5V

MMBT5401

Q105

R153
100K

R154
1M

68.1/1%

D114

1N4148

D115

1N4148

0.1/200V

IC103D
LM339D

+15.5V

11

+

13

10

-

CLIP DETECTOR CH A DRIVER

-15.5V
R239

825K/1%

-

8

14

+

9

R241

2K21/.1%

R240
825K/1%

R242

2K21/.1%

-

6

1

+

7

33.2K/.1%.5W

NOTE 1

1N4148

1N4148

NOTE 1

R231

R225

D222

D223

R226

R230

33.2K/.1%.5W

33.2K/.1%.5W

R243
NOTE 1

R244
NOTE 1

33.2K/.1%.5W

R232

R233

CURRENT LIMITER

R255

R251

1M

R252
100K

MMBT5551

Q204

R256

68.1/1%

-15.5V

MMBT5401

Q205

R253
100K

R254
1M

68.1/1%

D214

1N4148

D215

1N4148

IC203D
LM339D

+15.5V

11

+

13

10

-

CLIP DETECTOR

8

7

6

5

4

3

C112

0.1/200V

C114

0.1/50V

R157

68.1/1%

C110 0.001/50V

R158

68.1/1%

2SA1415

C115

0.1/50V

C113

C212

0.1/200V

C214

0.1/50V

R257

68.1/1%

C210 0.001/50V

R258

68.1/1%

2SA1415

C215

0.1/50V

576/1%

C213

0.1/200V

+HI RL

R159
576/1%

Q109

2SC3645

Q106

Q108A
MMPQ6700

R161

68.1/1%

R163

8.25K/1%

D116

1N4148

D117

1N4148

2SC3645

MMPQ6700

Q108B

R167

68.1/1%

68.1/1%

R164

8.25K/1%

68.1/1%

R162

68.1/1%

Q108C
MMPQ6700

Q107

R160
576/1%

R168

68.1/1%

MMPQ6700

Q108D

Q110
2SA1415

Q111
MMBT5551

R171

C116

R178

2.7K
33pF/500V

R179

11K/1%/1W

R180

576/1%

R172

R149
NOTE 1

Q112
MMBT5401

09-52-3152

J101

+36V

1

+HI RL

2

+VA-B

3

+IGM

4

+CLIP

5

+VA-C

6

GND

7

GND

8

FB

9

FB

10

-CLIP

11

-IGM

12

-VA-B

13

-HI RL

14

-36V

15

-HI RL

+HI RL

R259
576/1%

Q209

2SC3645

Q206

Q208A
MMPQ6700

R261

68.1/1%

R263

8.25K/1%

D216

1N4148

D217

1N4148

R262

68.1/1%

Q208C
MMPQ6700

Q207

2SC3645

MMPQ6700

Q208B

R267

68.1/1%

68.1/1%

R264

8.25K/1%

68.1/1%

R268

68.1/1%

MMPQ6700

Q208D

Q210
2SA1415

Q211
MMBT5551

R271

C216

R278

2.7K
33pF/500V

R279

11K/1%/1W

R280

576/1%

R249

R272

NOTE 1

Q212
MMBT5401

09-52-3152

NOISY & HIGH VOLTAGE TRACE

J201

+36V

1

+HI RL

2

+VA-B

3

+IGM

4

+CLIP

5

+VA-C

6

GND

7

GND

8

FB

9

FB

10

-CLIP

11

-IGM

12

-VA-B

13

-HI RL

14

-36V

15

R260

-HI RL

CH B DRIVER

CREST AUDIO

100 EISENHOWER DRIVE
PARAMUS, NJ 07652

Title

CA6, CA9 SERIES PREAMP

Size Document Number Rev

D

PREAMP.CA

2

Date: Sheet

1

0 0Wednesday, May 17, 2000

02

of

8

7

6

5

4

3

2

1

HIRAIL+

C12
U15/400/KTAK

BR2
MPIL40

D D

1
2
3
4
5
6

J1

10-84-4061

BR1
MPIL40

C3

UNIVERSAL

C4

UNIVERSAL

C5

UNIVERSAL

C6

UNIVERSAL

ARRANGE PINS IN ANY ORDER FOR PCB

470/50/ELRZ

C11

F1

2
1

3A/MINI

J14

26-48-1025

CLIP LED ACTIVATE

CLIP_B

C C

CLIP CH B

BR3
RS202

1N5255

R49

1K

Z19

28V

SIGNAL CH B

R9

10K

+27V

R17
10K

-

11

10

+

12

IC1C

LM613

R19
10K

D7

ATT_B

EXCESSIVE IGM SHUTOFF

R7

33K

1N4148

J1

B B

26-48-1025

TRANS TEMP

GROUND

LED GROUND

TEMP_GND_B

TEMP_OUT_B

2
1

TRANSFORMER TEMP

TEMP SENSOR OUT

GROUND

C27

100/25/ELRM

TEMP_PWR_B

MPSA13

Q?

R?

475

1N4148

AUTORAMP_B

ACTIVE CH B

MPSA75

R25

4K7

A A

ACTIVE

Q11

R?
15

R43
10K

R33

100K

R45

1K

1N4148

R15

33K

D19

Q15

TIP120

D3

C7

UNIVERSAL

C8

UNIVERSAL

C9

UNIVERSAL

C10

UNIVERSAL

10/35/ELRM

R21

5K0/5

7

LM613

HIRAIL-

C20

Q1
2N5551

SIGNAL

GROUND

MAC97A

100K

TEMP/DC

IC1B

R37

1M

LORAIL+

+20.5V

+20.5V

1K/3W

1K/3W

LORAIL-

R52

C16

470/50/ELRZ

470/50/ELRZ

C15

R51

-20.5V

Z9

1N5932A

1N5932A

Z10

-20.5V

C14

470/50/ELRZ

UNREGULATED 35V

R5
1K

CLIP

Q3
MPSA75

CLIP_A

CLIP LED ACTIVATE

R11

10K

CLIP CH A

SIGNAL CH A

R9

10K

D3

1N4148

R15
33K

TR1

C1

EXCESSIVE IGM SHUTOFA

ATT_A

470/6.3/ELRM

TRANSFORMER TEMP

R?

33K

1N4148

-

15

16

+

14

IC1D

LM613

D7

5K0/5

MAC97A

GROUND

8

R29

R31
243

IC1E
LM614

D9

-

6

+

5

1N4148

R39

1K82

R47
2K2

13

LED GROUND

TEMP_GND_A

9

TEMP_OUT_A

TEMP_PWR_A

TEMP SENSOR OUT

MPSA13

Q?

C27

100/25/ELRM

TEMP/DC

D19

R?

475

1N4148

AUTORAMP_A

ACTIVE CH A

MPSA75

R25
4K7

ACTIVE

Q11

R?
15

R43

6K8

R33

100K

R45

1K

R21

TR1

CLIP CH B
SIGNAL CH B
ACTIVE CH B

GROUND

Q1
2N5551

SIGNAL

1

IC1A

LM613

R37

1M

+27V

TO DISPLAY PCB

R63
10K

R11

10K

GROUND

470/6.3/ELRM

R29

100K

-

+

4 13

10-88-1101

+27V

C1

2

3

1 2
3 4
5 6
7 8
9 10

J5

3

+

2

-

R5
1K

D9

1N4148

84

LM358

CLIP

R59
4K7

IC2A

1

1U/50/ELRM

R65

430K

Q3
MPSA75

R31
243

LED GROUND
CLIP CH A
SIGNAL CH A
ACTIVE CH A
INRUSH

TIP120

R73

2.4K

C21

R39

1K82

Q13

J7

26-48-1025

1
2

FAN CH B

U047/630/KTRK

SPKR. RAIL CH. B

U047/630/KTRK

5

+

6

-

R64

10K

L1

3uH

R67

1/10

R69

10/10

C23

L2

3uH

R68

1/10

R70

10/10

C24

CHART OF VALUES

R51,R52

BR1,BR2

BR1,BR2

C3,C4,C5,C6

C7,C8,C9,C10

IC2B

7

LM358

R66

430K

1U/50/ELRM

SPKR. RAIL CH. B

RL1
FRL-24

RL2

FRL-24

CA-2 CA-4REF DES

TIP120

C22

2.4K

J8

Q14

R60

26-48-1025

FAN CH A

1
2

4K7

R74

CH B IN

D14

1N4001

OUT B

INRUSH

D11

1N4001

D12

1N4001

CH A IN

OUT A

D13

1N4001

CA-6

+27V

CREST AUDIO

100 EISENHOWER DRIVE
PARAMUS, NJ 07652

Title

CA SERIES POWER SUPPLY

Size Document Number Rev

21C1895

C

8

7

6

5

4

3

Date: Sheet

2

0 0Wednesday, May 17, 2000

1

XX

of