BOSE 250569 Schematic

8

7

6

5

4

3

2

1

EQ_IN

R11

R12

R15

R16

C82

N/A

From J2-1

10.0K

10.0K

10.0K

10.0K

R72

C71

C72

6

_

6

_

BPF1_OUT

R21

6

BPF1_OUT

R31

9

20.5K

7

HPF1

R81

R82

7

LPF1

_

_

.100uF

.033uF

N/A

N/A

U1B

U2B

7

8

EQ_OUT

HPF

5

LPF

5

N/A

20.5K

5

U3B

10

U3C

To J2-2

+

802FR

+

N/A

BPF2_OUT

R22

+

LS404

BPF2_OUT

R32

+

R83

LS404

C73

LS404

C81

N/A

C83

N/A

5.49K

.033uF

R

R

R71

R73

N/A

N/A

BPF3_OUT

CUT

BPF3_OUT

BOOST

R23

R33

30.9K

499K

R

R

D

N/A

17.8K

R

R

D

BPF4_OUT

R24

BPF4_OUT

R34

C85

N/A

5.49K

R14

N/A

C74

C75

R75

9

9

_

_

9.09K

R84

R85

R25

R35

BPF5_OUT

BPF5_OUT

.100uF

.033uF

8

HPF2

8

LPF2

10.0K

U1C

N/A

N/A

U2C

10

10

N/A

N/A

+

+

R13

13

_

802/502B

N/A

BPF6_OUT

R26

BPF_IN

BPF6_OUT

R36

R86

10.0K

14

C76

LS404

12

U3D

.033uF

C84

N/A

C86

N/A

N/A

+

R74

R76

N/A

N/A

LS404

R27

R37

8.06K

158K

BPF7_OUT

BPF7_OUT

R

R

R

N/A

INVERT

N/A

R

R

R28

R38

BPF8_OUT

BPF8_OUT

C88

N/A

N/A

N/A

C77

C78

R78

13

13

BAND-PASS FILTER SUMMATION

7.50K

_

R87

R88

_

.047uF

.047uF

14

HPF3

14

LPF3

+

N/A

N/A

+

12

U1D

12

U2D

802/AWCS

R89

N/A

C79

LS404

C87

N/A

C89

.047uF

R77

R79

N/A

N/A

C11

R61

C19

R65

19.6K

133K

R

R

C

2700pF

54.9K

N/A

N/A

C's are

C's are

C

R

R

R41

R45

1210/1206

1206/0805

BPF_IN

27.4K

2

BPF_IN

N/A

2

HIGH-PASS FILTERS

LOW-PASS FILTERS

U4A

U5A

From U3-14

From U3-14

_

_

1

BPF1_OUT

1

BPF5_OUT

C12

3

+

C20

3

+

R51

2700pF

Q=1.21

R55

N/A

14.3K

R

LS404

Fc=2602Hz

N/A

R

N/A

Gain=-3.5dB

R

R

PCB1

PT195569AA

2

_

2

_

2

_

LABEL1

LASER LABEL

1

HPF

1

LPF

U3A

1

SNAP1

SPACER

HPF_IN

3

U1A

LPF_IN

3

U2A

3

+

+

+

C13

R62

C21

R66

LS404

2700pF

12.4K

N/A

N/A

LS404

N/A

R

R42

R46

BPF_IN

6.19K

6

BPF_IN

N/A

6

BUFFERS

MISC.PARTS

U4B

U5B

From U3-14

From U3-14

_

_

7

BPF2_OUT

7

BPF6_OUT

C14

5

+

C22

5

+

R52

2700pF

Q=1.37

R56

N/A

2.26K

R

LS404

Fc=12979Hz

N/A

R

N/A

Gain=+9.0dB

G71B01 ID INFO:

+15

B

HPF_IN

EQ_IN

NOLOAD=1.362V

U1

U2

U3

U4

U5

B

R

R

1

1

EQ_OUT

HPF1

2

LOADED=1.249V

C91

C93

C95

C97

C99

2

ID

CODE=100 HEX

HPF2

3

3

0.1uF

N/A

0.1uF

0.1uF

0.1uF

HPF3

4

4

C15

R63

C23

R67

LPF_IN

5

R95

+5A

ID

.010uF

309K

N/A

N/A

5

49.9K

C92

C94

C96

C98

C100

LPF1

6

+5A

D

6

R98

R99

LPF2

7

+15

R43

R47

7

0.1uF

N/A

0.1uF

0.1uF

0.1uF

LPF3

73.20K

27.40K

BPF_IN

255K

9

_

BPF_IN

N/A

9

_

8

8

0805

0805

-15

9

-15

R

From U3-14

8

BPF3_OUT

From U3-14

8

BPF7_OUT

J1

0.1uF are 0805

U4C

U5C

10

10

J2

C16

C24

+

+

D

R

R53

.047uF

Q=0.50

R57

N/A

665K

R

LS404

Fc=30Hz

N/A

R

N/A

CONNECTORS

ID

DECOUPLING

Gain=+3.9dB

R

R

PREFERRED

CAPACITANCE RANGES

TYPE SIZE VALUE

R's are 0603

JP1

0603

CAPACITOR VALUES

C17

R64

C25

R68

NPO 0805 <=2.4nF

HPF_IN

N/A

HPF1

C's are 1206/0805

.010uF

12.7K

N/A

N/A

NPO 100pF

NPO 1206 <=6.2nF

NPO 330pF

PPS .010uF

NPO 1210 <=7.9nF

Unless noted

R44

R48

Use a 0-ohm jumper here

NPO 1000pF

PPS .018uF

PPS 0805 <=10nF

NPO 2200pF

PPS .047uF

PPS 1206 <=47nF

10.5K

N/A

BPF_IN

13

_

BPF_IN

13

_

only if there are no HPFs.

NPO 5600pF

PPS .100uF

PPS 1210 <=100nF

A

From U3-14

U4D

14

BPF4_OUT

From U3-14

U5D

14

BPF8_OUT

A

C18

12

C26

12

+

+

BOSE

R

TM

SE 16 AUDIO PROCESSOR

JP2

0603

R54

.047uF

Q=0.50

R58

N/A

ENTERO

27.4K

R

LS404

Fc=732Hz

N/A

R

N/A

0-ohm

SERVICE MANUAL PART NUMBER 256689

Gain=-9.0dB

LPF_IN

LPF1

R

R

Use a 0-ohm jumper here

LOUDSPEAKER EQ MODULE

only if there are no LPFs.

BAND-PASS FILTERS

FILTER BYPASS

PART NUMBER 250569-1,-2,-3,-6,-7,-9

SHEET 1 OF 1

8

7

6

5

4

3

2

1