BOSE SD259145 Schematic

H

TO TERM BLOCK

CHANNEL 1

INPUT

SEE NOTE 7

TO TERM BLOCK

G

TO TERM BLOCK

F

E

TO TERM BLOCK

TO TERM BLOCK

CHANNEL 2

INPUT

SEE NOTE 7

TO TERM BLOCK

D

C

+15V

-15V

B

A

P6

XLR

J3

P6

GND

XLR

J3

P6

XLR

J3

P6

J4

XLR

P6

GND

J4

XLR

P6

J4

XLR

C37 C87

C17

C6

.1

.1

.1

CER

CER

CER

C36

C16

C5

.1

.1

.1

CER

CER

CER

+

-

+

-

C52
.1
CER

C51
.1
CER

5

3

4

1

6

2

2

3

1

1

3

2

D1

1N4148

R2

1.00K

R5

C1

100K

1000P

R213

0

R3

1.00K
R6

C2

100K

1000P

R66

1.00K

C47

R128

1000P

100K

R214

0

R67

1.00K

R129

C48

100K

1000P

C54

C77

C65

.1

.1

.1

CER

CER

CER

C53 C76

C64

.1

.1

CER.1CER

CER

CHASSIS MOUNT

+15V

-15V

+15V

-15V

+15V

-15V

+15V

-15V

1N4746A

18V,1W

R1

1.00K

D2

1N4148

1N4746A

D3
1N4148

R4

1.00K
D4

1N4148

D5
1N4148

R65

1.00K
D6

1N4148

1N4746A

D7

1N4148

R68

1.00K

D8

1N4148

.1
CER

C86
.1
CER

D25

D26

18V,1W

D27

D28

18V,1W

-10dB

+

C98
.1
CER

C97
.1
CER

C3

22/35V

-10dB

C4

22/35V

C49

+

22/35V

C50

22/35V

R7

C120

2.00K
100P

R8

321

+4dB

S3

-10dB

INPUT LEVEL

1N4746A

18V,1W

R69

C119

2.00K

100P

R70

8.06K

654

+4dB

S4

-10dB

INPUT LEVEL

C130

C100

.1

.1

CER

CER

C129

C99

.1

.1

CER

CER

1

P1

J1

2

P1

12

+

1/4

13

-

C7

100P

654

+4dB

S3

3

+

1/4

2

-

C55

100P

R71 R72

8.06K

321

+4dB

U1

14

R10R9

2.00K8.06K8.06K

R38

6.81K

R39

6.81K

U1

2.00K

1

10

9

R12

1K

C9

.0068

5

6

R74

1K

C57

.0068

+

1/4

-

(N U)

5

6

R154

4.75K

+

1/4

-

(N U)

C140

(N U)

C8

R11

3.32K

+

-

C141

(N U)

C56

R73

3.32K

U1

1/4

C164

100P

R155

4.75K

U1

8

U6

7

7

1.27K

MONO

MONO

R75 R76

R14R13

1.27K

S2

OUTPUT MODE

1.27K1.27K

S4

DENOTES CRITICAL COMPONENTS.
REPLACE ONLY WITH IDENTICAL BOSE PARTS.

C109:

P/N 103447-C (115V)

TRANSFORMER:

LINE CORD ASSEMBLY:

STRAIN RELIEF:

POWER SWITCH: P/N 143960 (100V/115V/230V/240V)

C132
.1

.1

CER

C131
.1

.1

CER

S5

POWER

CHASSIS MOUNT

P/N 146354 (100V/230V/240V)

P/N 180128-1 (115VAC)

P/N 180128-2 (230VAC/240VAC)

P/N 173224 (100VAC)(2-WIRE)
P/N 173242 (115VAC)(3-WIRE)
P/N 173243 (230VAC)(2-WIRE)
P/N 173246 (240VAC)(3-WIRE)
P/N 173245 (115VAC/240VAC)

P/N 144011 (100VAC/230VAC)

P1,P2:

P/N 143963 (100V/115V/230V/240V)

J1,J2:

P/N 143968 (100V/115V/230V/240V)

C109
.0047

LINE

1

P2

2

P2

J2

CHASSIS MOUNT

C11

.033

12

+

C10

13

-

.0027

C121

R163 R164

(N U)

(N U)

R174

681

654

STEREO

S2

STEREO

321

R176

681

C59

.033

3

+

2

-

C58

.0027

C125

(N U) (N U)

T1

TRANSFORMER

1/4

C122

(N U)
R162

CW

R126

10K

CCW

CW

R126

10K

CCW

1/4

C126

(N U)
R169

U2

0

C123
(N U)

(CH 1)

(CH 2)

U2

0

(N U)

C127
(N U)

(N U)

R171R170

12345678

POS OPERATING MODE
POS 1 VOICE ONLY / FULL RANGE (WITH 802'S ONLY)
POS 2 STANDARD 2 WAY (WITH 502B)
POS 3 ( NOT USED )

UNPROCESSED SIGNAL (CH 1)

FULL RANGE NO HPF (CH 1)

R33

6.34K

U4

13

-

C23C22C24

12

0

3

2

9

.022

.1.1

R34

(N U)

R35

1.74K

+

1/4

-

(N U)

R56

(N U)

R32

93.1K

R37

2K

9

10

.15

.15

R36

34.8K

U5

R59

0

1

R57

U8

-

8

1/4

+

R44

1.10K

R166

61.9K

(N U)(N U)

12

13

R22

(N U)

10

221K

R23R16

2.49K

U3

+

1/4

-

R21

0

U7

9

­1/4

+

C18 C20

R24

14

0

(N U)(N U)

R27

0

R52

(N U)

C39

(N U)

R51

(N U)

C31 C32

.1 .1

R45

C135

R180
221K

(N U)

68.1K

C40

R46

12

13

C38

(N U)

8

49.9K

(N U)

6.81K

R165

3.01K

R185
(N U)

U2

10

+

1/4

9

8

-

R17

5.62K

R18

9.09K

C14

.0018

R19

54.9K
C124

C15

.0056

C13C12

R15

9.09K

C139
(N U)

.033.12

14

CHANNEL 1

R188

(N U)

3B

2B

R187

1B

(N U)

R175

3A

1A

R177

681

2A

681

LF LEVEL

R190

(N U)

R189
(N U)

12

13

R41

5.90K

+

1/4

-

C162

100P

R40

4.75K

U7

14

C28 C29 C30

.47 .22 .22

R42 R43

5.11K

+

-

R28

(N U)

R25
(N U)

R26R20

(N U)

C19
(N U)

(N U)

1/4

R161

4.32K

6

5

R53

R47

6.98K

­1/4

+

U8

R160

1.00K

U5

14

(N U)

10

R31

16.5K

9

7

(N U)

+

-

R48 R50R49

5.49K

R29

U3

1/4

8

C21

.1

R30

20K

C41

(N U)

R54

(N U)

C134
(N U)

14.0K
C33 C34
.22

(N U)

C42

R179
(N U)

C35

.18

14.0K

C27 C25 C26

.47

R55

(N U)
R178
(N U)

10

UNPROCESSED SIGNAL (CH 2)

R95

6.34K

.1 .1

14

7

2

3

R94

93.1K

R99

2K

6

C74C73C75

5

.15.15.47

R98

34.8K

R119

0

R109 R110R108

14.0K 14.0K5.49K

C83
.22

C72 C70 C71

0

R96

(N U)

R97

1.74K

R115
(N U)

R181
(N U)

C92C91

U6

12

+

1/4

13

-

R117
(N U)

R182

R116

(N U)

(N U)

C85

.18

U8

6

­1/4

5

+

C84
.022

NOTES:

UNLESS OTHERWISE SPECIFIED:

1. ALL RESISTORS ARE EXPRESSED IN OHMS AND ARE 1/8W, 1%.

2. ALL CAPACITORS ARE EXPRESSED IN MICROFARADS.

3. ALL NON-POLARIZED CAPACITORS ARE FILMS AND ARE +/-5%.

4. ALL POLARIZED CAPACITORS ARE RADIAL ELECTROLYTIC AND ARE +/-20%.

5. U9 - U12 : RC4559N OR NJM4559D (8 PIN).
+V IS PIN 8, -V IS PIN 4.

6. U1 - U8 : RC4156N OR NJM2059D (14 PIN).
+V IS PIN 4, -V IS PIN 11.

7. U15 : LM339N (14 PIN).
+V IS PIN 3, -V IS PIN 12.

8. INSTALL JUMPER, 0 OHM, IN LOCATIONS: C22,C25,C70,AND C73.

9. RELAYS K1 AND K2 ARE SHOWN IN THE DE-ENERGIZED STATE.

10. RELAYS K1 AND K2 ARE 4PDT (BOSE P/N 144017).

11. THREE WIRE AC CORDS ARE USED ON THE US, UK, AND AUSTRALIAN
VERSIONS, THEREBY TYING THE CHASSIS TO EARTH GROUND.
TWO WIRE CORDS ARE USED ONLY ON THE EUROPEAN AND
JAPANESE VERSIONS.

12. CONNECTORS P4 AND P5 ARE FOR CONNECTIONS TO THE OC-1
AWCS OPTION CARD. REFER TO SD 145609.

R78 R85

6.81K

R172

3.01K

U2

R80

9.09K

R79

5.62K

C62

C63

.0082

7

R81

54.9K

.0056

C128

(N U)

C60 C61

1

R77

9.09K

C138

(N U)

5

+

.033.12

1/4

6

-

R184

(N U)

CHANNEL 2

U7

3

+

1/4

2

1

-

C163

100P

R100

4.75K

R101

5.90K

Z1

1
P3

C110
.001

C111
.001

100V,1A

2
P3

3

P3

C112

.01

C133

.22

.47

R102

5.11K

C113

2200/50V

C114

.01

2200/50V

2.49K

R173

61.9K

U3

3

+

R86

1/4

1

2

-

R83

0

R84

R82 R88
(N U) (N U)

C88 C89 C90

(N U)

R104

1.10K

U7

6

-

C80C79C78

1/4

5

+

R103
221K

NJM78M15FA

U13

1

U14

NJM79M15FA

7

R105

49.9K

(N U)

321

C117
1/50V

C118
1/50V

32

.22

C115
1/50V

C116
1/50V

0

(N U)

R89

(N U)

R111 R113
(N U)

C82C81

.1.1

R183

C137

221K

+15V

R158

47.5K

R159

47.5K

-15V

(N U)

0

R112

(N U)

R106

68.1K

R127

5.6K

D41

GREEN

C68C66

(N U)

3

2

TP1

TP3

TP2

R91

(N U)

R90

(N U)

­1/4

+

U8

R167

1.00K

U3

5

+

1/4

6

7

­C69

.1

R92

20K

R93

16.5K

U6

(N U) (N U)

8

R114
(N U)

C136

(N U)

1

+15V

2

P4

GND

11

P5

GND

12

P5

-15V

1

P4

R87

(N U)

(N U)

C67
(N U)

9

10

(N U)

R107

6.98K

+

1/4

-

R168

4.32K

FULL RANGE (CH 1)

1/4

14

+

HF BIAMP (CH 1)

U4

­1/4

+

8

R63

(N U)

C44C43

R58

(N U)

R61

(N U)

(N U)

(N U)

12

(N U)

13

R60

(N U)

C45

R156

6.81K

BASS BIAMP (CH 1)

BASS (CH 1)

FULL RANGE NO HPF (CH 2)

U4

-

FULL RANGE (CH 2)

1

1/4

+

HF BIAMP (CH 2)

U4

­1/4

+

7

R123

(N U)

C93

R118

(N U)

R121

36.5K

C94

(N U)

C95

(N U)

(N U)

R120

(N U)

3

2

R124

0

BASS BIAMP (CH 2)

BASS (CH 2)

R62

(N U)

U5

+

1/4

­C46

(N U)

R64

0

R122

(N U)

U6

+

1/4

­C96

(N U)

R125

0

10

P4

9

P4

6

P4

5

P4

PASSIVE (CH 1)

P4

9

10

14

3

(N U)

P4

11

P4

(N U)

12

(N U)

P4

P4

OPTION BASS

(CH 1)

4

P4

10

P5

9

P5

6

P5

5

P5

PASSIVE (CH 2)

P5

1

1

(N U)

P5

2

(N U)

P5

3

(N U)

P5

P5

OPTION BASS

(CH 2)

4

P5

D42

1N4148

D43

1N4148

OPTION HF

­1/4

+

8

POS 4 2-WAY WITH LOW FREQUENCY OPTION

C153

22/35V

S1

23

POS 1

POS 2

22

,24

19

POS 3

21

POS 4

7

(CH 1)

20

MODE SELECT

U5

OPTION

17

14

C155

22/35V

S1

,18

13

8

(N U)

R145

0

R144

0

POS 1

POS 2

16

POS 3

15

8

POS 4

MODE SELECT

C157
+

22/35V

POS 1

11

S1

POS 2

10

7

9

8

MODE SELECT

R137

0

OPTION

R136

0

S1

5

4

3

2

,12

C159

+
22/35V

1

,6

POS 3

7

OPTION HF

(CH 2)

POS 4

POS 1

POS 2

POS 3

POS 4

MODE SELECT

+15V

R209

47.5K

R210

4

475

R207

47.5K
C165

(N U)

1N4737A

7.5V,1W,5%

D40

C161
.1

+15V

R200

10.0K

R199 R201

6.81K

R208

10.0K

17.8K

-

5

+

(N U)

1M,5%

+

11

-

10

R131

4.75K

R135

4.75K

R139

4.75K

R143

4.75K

1/4

LM339N

R211

R202

U15

1/4

LM339N

U15

C142
1000P

C143
1000P

C144
1000P

C145
1000P

R146

200

R215

R147

200

R148

200

R216

R149

200

K2

6

TO TERM BLOCK

P7

+

2

XLR

P9

4

TO TERM BLOCK

P7
GND
P9

XLR

P7

TO TERM BLOCK

-

P9

XLR

TO TERM BLOCK

P8

+

XLR

P10

TO TERM BLOCK

P8
GND

XLR

P10

TO TERM BLOCK

P8

-

XLR

P10

CHANNEL 1
HF OUTPUT
SEE NOTE 7

CHANNEL 1
LF OUTPUT
SEE NOTE 7

1

0

5

3

K2
K1

6

2

4

1

0

5

3

+15V

D29

D9

1N4148

D10

1N4148

D30

1N4746A
18V,1W

R130

4.75K

U9

2

-

R191

1/2

3

200

1

+

1N4746A

18V,1W

-15V

U9

6

­1/2

5

+

R134

4.75K

U11

6

­1/2

5

+

R192

200

7

+15V

D31

1N4746A

18V,1W

D13

1N4148

R193

200

7

1N4746A

18V,1W

D14

1N4148

D32

-15V

U12

6

­1/2

5

+

(N U)

R194

200

7

K1

C146
1000P

C147
1000P

C148
1000P

C149
1000P

R150

200

R217

0

R151

200

R152

200

R218

R153

200

0

K2

3

TO TERM BLOCK

P7

+

2

XLR

P11

1

TO TERM BLOCK

P7
GND

1

XLR

P11

2

P7

TO TERM BLOCK

-

3

P11

XLR

K2

K1

3

P8

TO TERM BLOCK

+

2

P12

XLR

1

P8

TO TERM BLOCK

GND

1

XLR

P12

2

P8

TO TERM BLOCK

-

3

XLR

P12

K1

CHANNEL 2

HF OUTPUT
SEE NOTE 7

CHANNEL 2
LF OUTPUT
SEE NOTE 7

+15V

D33

D17

1N4148

D18

1N4148

D34

1N4746A

18V,1W

R138

4.75K

U10

2

-

R195

1/2

3

200

+

1

1N4746A

18V,1W

-15V

U10

6

­1/2

5

+

R142

4.75K

U11

2

­1/2

3

+

R196

200

7

+15V

D35

1N4746A

18V,1W

D21

1N4148

R197

200

1N4746A
18V,1W

D22

1N4148

D36

1

-15V

U12

2

­1/2

3

+

(N U)

R198

200

1

+15V

U15

7

R205

47.5K

+

1/4

6

1

­LM339N

R206

1M,5%

U15

9

+

1/4

8

14

-

LM339N

D38

1N4148

R157
10K

R186

(N U)

+15V

K1 K2

2SC2812

Q1

R212

2

4.75K

+15V

D37

1N4148

R204

221

R203

13

221

C152

22/35V

-15V

SAFETY CONTROLLED

FRAMINGHAM, MA 01701-9168

TITLE

802C III CONTOLLER

PCB ASSEMBLY

PART NUMBER 259145

D39

1N4148

R

H

G

F

E

D

C

B

A

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