DBX 3231L Schematic

ECN# DATE ECN# DATEDESCRIPTIONREVISIONREVISION DESCRIPTION

A0 RELEASE TO PRODUCTION, BOARD IS REV A 3.15.95

|LINK
|053243A0.001
|053243A0.002
|053243A0.003
|053243A0.004
|053243A0.005

dbx Professional Products
8760 South Sandy Parkway

Sandy, Utah 84070
Title

dbx 3231L CH2 MAIN BOARD 80-3238

Size Document Number Rev

053243A0.000 A0

B

Monday, October 25, 1999

Date: Sheet of

0 5

INPUT GROUND
LIFT SWITCH

WA1
WA283449

1

2

IN+

IN-

GND

OUT+

OUT-

GND

J1
J322110

13

WA4
WA283449

INPUT

3

SW1

SW440131

654

12378

B1

BAR320301

1

2

INPUT TRANSFORMER OPTION

1
4
5
2
6

11

10

912

J2

J322115

12
4

14

3

L1
EMI1000PF

1 3

2

L3
EMI1000PF

1 3

2

1
2
3
4
5
6

OUTPUT

J4

1

J322110

4
5
2
6

3

J3

1 2
4

R11

220K

C25

47SE1

J322114

V+

3

V+

D1
1N4148

R18
75K

1 3

1 3

R10
330

L9
EMI1000PF

L10
EMI1000PF

Q4
2N5088

V-

D3
1N4001

2

2

(UNSOLDER PJ3 & PJ4 WHEN INPUT
TRANSFORMER IS INSTALLED)

H12A

HDR321063

1

RELAY DEFEAT
(UNSOLDER PJ1 & PJ2 TO DEFEAT)

PJ1
PJ

PJ2
PJ

K1

6

4

8
11

13

9

16

1

RLY725143

H12C3H12D4H12E

H12B

2

PJ3

PJ

PJ4

PJ

IN+

IN+
OUT+

OUT+
IN-

IN­OUT-

OUT-

5

V+

7

3

U4

2

4

V-

SSM2141

H13A

HDR321063

H13B2H13C3H13D4H13E

1

PJ5

PJ

PJ6

PJ

OUTPUT TRANSFORMER OPTION
(UNSOLDER PJ5 & PJ6 WHEN OUTPUT
TRANSFORMER IS INSTALLED)

RANGE

H1

1

V+

A

2

V-

B

3
5
6
1

C1
27PJC3

R2

49.9K 1%

R1

49.9K 1%

5

R36

10.0K 1%

R37

10.0K 1%

C11
47S63E

C21
47S63E

2
3

D8
1N4148

D10

1N4148

U2A

4

V-

1

MC33078

V+ V-

C3
10NPSE1

V+V-

D7
1N4148

V+

SSM2142

2
1

4

U5

8

3

7

56

V-

D9
1N4148

BYPASS

EQ OUT

C

4

D

5

E

6

F

7

G

8

H

9

I

10

J
WT321164

TO/FROM
CONTROL BOARD

EQ IN

IN CLIP

V-

dbx Professional Products
8760 South Sandy Parkway

Sandy, Utah 84070
Title

dbx 3231L CH2 MAIN BOARD 80-3238

Size Document Number Rev

053243A0.001 A0

B

Monday, October 25, 1999

Date: Sheet of

1 5

EQ IN

H2

WT321164

TO/FROM
SLIDER BOARD

IN CLIP

R17

D2

R4

4.42K 1%

R3

13.3K 1%

2

R40
340K 1%

1N4148

Q1

J112

1 3

Q11
2N6427

213

R5

1.00K 1%

13

R41

2.00K 1%

J112

2

L2

EMI1000PF

Q2

13.3K 1%
C10

27PJC3

MC33078

2
3

213

R9

13.3K 1%

V+

6

U3B

5

MC33078

C20
27PJC3

8

MC33078

3

U7A

2

V-

10.0K 1%

RD5

10.0K 1%

V+

5

U7B

6

RE7

10.0K 1%

RD7

10.0K 1%

MC33078

3

U6A

2

V-

10.0K 1%

RD4

10.0K 1%

R13

1.00K 1%

R12

4.42K 1%

7

4

RE5

CD5
27PJC3

8

MC33078

CD7
27PJC3

4

RE4

CD4
27PJC3

H3

1

A

2

C1

C1
C2

C2
C3

C3
C4

C4
C5

C5
C6

C6
C7

C7
C8

RC6

4.02K 1%

RB6

7.15K 1%

RC9

3.24K 1%

RB9

C8

C47
10NPSE1

CC4
10NPSE1

1

CC5
10NPSE1

7

CC6
10NPSE1

1

EQ OUT

80 Hz

RA6

30.1K 1%

CB7
.39H63P

100 Hz

RA9

24.3K 1%

CB12
.39H63P

C6

C6

CA8
.39H63P

CA11
.39H63P

5.76K 1%

dbx Professional Products
8760 South Sandy Parkway

Sandy, Utah 84070
Title

dbx 3231L CH2 MAIN BOARD 80-3238

Size Document Number Rev

053243A0.002 A0

B

Monday, October 25, 1999

Date: Sheet of

V+

5

U6B

6

RD6

10.0K 1%

3

U9A

2

V-

RD9

10.0K 1%

3
4
5
6
7
8
9

10

8

MC33078

RE6

10.0K 1%

CD6

27PJC3

MC33078

4

10.0K 1%

CD9

27PJC3

B
C
D
E
F
G
H
I
J

WT321164

7

1

RE9

CC7
10NPSE1

CC8
10NPSE1

FILTERS IN1

2 5

C7

C7

C8

C8

R6

1.00K 1%

R7

4.42K 1%

213

R8

R15

4.42K 1%
213

R16

1.00K 1%

R14

1

U3A

4

V-

RC3

CB3

.39H63P

CB1
.39H63P

CB2
.39H63P

16.2K 1%

CA3
.39H63P

RC1

13.0K 1%

CA1
.39H63P

RC2

10.2K 1%

CA2
.39H63P

RB3

28.7K 1%

RB1

23.2K 1%

RB2

18.2K 1%

V+

5

U2B

6

10.0K 1%

RD3

10.0K 1%

MC33078

3

U1A

2

V-

RE1

10.0K 1%

RD1

10.0K 1%

V+

5

U1B

6

10.0K 1%

RD2

10.0K 1%

8

MC33078

RE3

CD3
27PJC3

4

CD1
27PJC3

8

MC33078

RE2

CD2
27PJC3

CC1
10NPSE1

7

CC2
10NPSE1

1

CC3
10NPSE1

7

20 Hz

RA3
121K 1%

25 Hz

RA1

100K 1%

31.5 Hz

RA2

78.7K 1%

13.3K 1%

L4
EMI1000PF

1 3

40 Hz

RA5

61.9K 1%

C1 C4

C1 C4

C2 C5

C2 C5

C3

C3

CB6
.39H63P

50 Hz

RA7

48.7K 1%

CB8
.39H63P

63 Hz

RA4

39.2K 1%

CB5
.39H63P

Q5

J112

2

RC5

8.06K 1%

CA6

.39H63P

RB5

14.3K 1%

RC7

6.49K 1%

CA9

.39H63P

RB7

11.5K 1%

RC4

5.11K 1%

CA4

.39H63P

RB4

9.09K 1%

J112

Q3

200K 1%

C24
.047MM3

1

A

2

B

3

C

4

D

5

E
F
G
H

I

J

+15

6
7

-15

8
9
10

D11
1N4148

C68
.047MM3

SLIDER BOOST

SLIDER CUT

R38

2.00K 1%

R39

2M

FILTERS IN1

125 Hz

19.6K 1%

160 Hz

RA8

15.4K 1%

RA11

CB14
.39H63P

CB13
.39H63P

RC11

2.61K 1%

CA15
.39H63P

RB11

4.64K 1%

RC8

2.05K 1%

CA13
.39H63P

RB8

3.65K 1%

RC10

200 Hz

RA10
121K 1%

CB15

.039H63P

MC33078

V+

5

U9B

6

RD11

10.0K 1%

MC33078

3

U8A

2

V-

10.0K 1%

RD8

10.0K 1%

8

10.0K 1%

4

CC12
10NPSE1

7

D1

D1

RE11

CD11
27PJC3

CC10
10NPSE1

1

D2

D2

RE8

CD8
27PJC3 CD17

250 Hz

RA14
100K 1%

CB19

.039H63P

315 Hz

RA17

78.7K 1%

CB22

.039H63P

16.2K 1%

CA14
.039H63P

RB10

28.7K 1%

RC14

13.0K 1%

CA19
.039H63P

RB14

23.2K 1%

RC17

10.2K 1%

CA21
.039H63P

RB17

18.2K 1%

V+

5

U8B

6

RD10

10.0K 1%

MC33078

3

U12A

2

V-

RD14

10.0K 1%

V+

5

U12B

6

RD17

10.0K 1%

8

MC33078

RE10

10.0K 1%

CD10
27PJC3

4

RE14

10.0K 1%

CD14
27PJC3

8

MC33078

RE17

10.0K 1%

27PJC3

RC13

CB18

CB21

CB17

8.06K 1%

CA18
.039H63P

RC16

6.49K 1%

CA20
.039H63P

RC12

5.11K 1%

CA17
.039H63P

9.09K 1%

RB13

14.3K 1%

RB16

11.5K 1%

RB12

MC33078

3

U11A

2

V-

RD13

10.0K 1%

V+

5

U11B

6

RD16

10.0K 1%

MC33078

3

U10A

2

V-

RD12

10.0K 1%

4

10.0K 1%

CD13
27PJC3

8

MC33078

10.0K 1%

CD16
27PJC3

4

RE12

10.0K 1%

CD12
27PJC3

RE13

RE16

H4

1

CC13
10NPSE1

1

7

1

CC16
10NPSE1

CC14
10NPSE1

D6

D6

D7

D7

D8

D8

D2

D2
D3

D3
D4

D4
D5

D5
D6

D6
D7

D7
D8

D8

2
3
4
5
6
7
8
9

10

A
B
C
D
E
F
G
H
I
J

WT321164

400 Hz

CC9
10NPSE1

7

D3 D1

D3 D1

RA13

61.9K 1%

.039H63P

500 Hz

CC11
10NPSE1

1

D4

D4

RA16

48.7K 1%

.039H63P

630 Hz

CC15
10NPSE1

7

D5

D5

RA12

39.2K 1%

.039H63P

dbx Professional Products
8760 South Sandy Parkway

Sandy, Utah 84070
Title

dbx 3231L CH2 MAIN BOARD 80-3238

Size Document Number Rev

053243A0.003 A0

B

Monday, October 25, 1999

Date: Sheet of

3 5

FILTERS IN1

H7

1

A

2

G1

G1
G2

G2
G3

G3
G4

G4
G5

800 Hz

RA15

R52

30.1K 1%

0

CB23
.039H63P

1000 Hz

RA19

24.3K 1%

CB24
.039H63P

1250 Hz

RA21

19.6K 1%

CB31
.039H63P

RC15

4.02K 1%

CA23
.039H63P

RC19

3.24K 1%

CA25
.039H63P

RC21

2.61K 1%

CA30
.039H63P

RB15

7.15K 1%

RB19

5.76K 1%

RB21

4.64K 1%

V+

5

U10B

6

10.0K 1%

RD15

10.0K 1%

MC33078

3

U14A

2

V-

RD19

10.0K 1%

MC33078

V+

5

U14B

6

RD21

10.0K 1%

8

MC33078

RE15

CD15

27PJC3

4

10.0K 1%

CD19
27PJC3

8

10.0K 1%

CD21
27PJC3

RE19

RE21

1600 Hz

CC17
10NPSE1

7

G1

G1

15.4K 1%

.039H63P

2000 Hz

CC18
10NPSE1

1

G2

G2

121K 1%

CB30

.0039H63P

2500 Hz

CC19
10NPSE1

7

G3

G3

100K 1%

CB34
.0039H63P

RA18

CB25

RA20

RA24

RC18

2.05K 1%

RC24

13.0K 1%

CA26
.039H63P

RB18

3.65K 1%

RC20

16.2K 1%

CA29
.0039H63P

CA34
.0039H63P

23.2K 1%

RB20

28.7K 1%

RB24

MC33078

3

U13A

2

V-

RD18

10.0K 1%

5
6

RD20

10.0K 1%

3
2

RD24

10.0K 1%

4

RE18

10.0K 1%

CD18
27PJC3

MC33078

V+

8

U13B

10.0K 1%

MC33078

U19A

4

V-

10.0K 1%

CD24
27PJC3

1

RE20

CD20

27PJC3

RE24

RA23

RA27

RC27

10.2K 1%

CA37
.0039H63P

RC23

8.06K 1%

CA33
.0039H63P

RB27

18.2K 1%

RB23

14.3K 1%

V+

5

U19B

6

10.0K 1%

RD27

10.0K 1%

MC33078

3

U18A

2

V-

RD23

10.0K 1%

8

MC33078

RE27

CD27
27PJC3

4

RE23

10.0K 1%

CD23
27PJC3

CC23
10NPSE1

7

CC24
10NPSE1

1

3150 Hz

CC20
10NPSE1

G4

G4

78.7K 1%

CB37

.0039H63P

4000 Hz

CC21
10NPSE1

7

1

CC22
10NPSE1

G5

G5

G6

G6

61.9K 1%

CB33

.0039H63P

G5
G6

G6
G7

G7
G8

G8

G7

G7

G8

G8

3
4
5
6
7
8
9

10

B
C
D
E
F
G
H
I
J

WT321164

FILTERS IN2

dbx Professional Products
8760 South Sandy Parkway

Sandy, Utah 84070
Title

dbx 3231L CH2 MAIN BOARD 80-3238

Size Document Number Rev

053243A0.004 A0

B

Monday, October 25, 1999

Date: Sheet of

4 5

FILTERS IN2

5000 Hz

RA26

48.7K 1%

.0039H63P

6300 Hz

RA22

39.2K 1%

.0039H63P

8000 Hz

RA25

30.1K 1%

.0039H63P

10000 Hz

RA29

24.3K 1%

.0039H63P

CB36

CB32

CB35

CB39

RC26

6.49K 1%

CA36
.0039H63P

11.5K 1%

CA32
.0039H63P

9.09K 1%

CA35
.0039H63P

RC29

3.24K 1%

CA39
.0039H63P

RB26

RC22

5.11K 1%

RB22

RC25

4.02K 1%

RB25

7.15K 1%

RB29

5.76K 1%

CB41

CB38

CB40

RC31

2.61K 1%

CA41

.0039H63P

RB31

4.64K 1%

RC28

2.05K 1%

CA38

.0039H63P

RB28

3.65K 1%

RC30

1.62K 1%

CA40

.0039H63P

RB30

2.87K 1%

V+

8

5

U18B

6

10.0K 1%

RD26

10.0K 1%

MC33078

3

U17A

2

4

V-

10.0K 1%

RD22

10.0K 1%

V+ V+

8

5

U17B

6

10.0K 1%

RD25

10.0K 1%

MC33078

3

U22A

2

4

V-

10.0K 1%

RD29

10.0K 1%

MC33078

RE26

CD26
27PJC3

RE22

CD22
27PJC3

MC33078

RE25

CD25
27PJC3

RE29

CD29
27PJC3

CC27
10NPSE1

7

CC26
10NPSE1

1

CC25
10NPSE1

7

CC28
10NPSE1

1

12500 Hz

RA31

19.6K 1%

H2

H2

.0039H63P

16000 Hz

RA28

15.4K 1%

H3

H3

.0039H63P

20000 Hz

RA30

12.1K 1%

H4 H8

H4 H8

.0039H63P

H5

H5

V+

5

U22B

6

RD31

10.0K 1%

MC33078

3

U21A

2

V-

RD28

10.0K 1%

5

U21B

6

RD30

10.0K 1%

8

MC33078

10.0K 1%

CD31
27PJC3

4

RE28

10.0K 1%

CD28
27PJC3

8

MC33078

10.0K 1%

CD30
27PJC3

+24V

-24V

V+

7

RE31

1

7

RE30

BAR320300

V-

B3

CC30
10NPSE1

CC29
10NPSE1

CC31
10NPSE1

1
2

H6 H2

H6 H2

H7

H7

GROUND LIFT
JUMPER

TEST HEADER

H11
1
2
3
4
5
6
7
8
9

10

HDR322111

V+ V+ V+ V+ V+ V+ V+

C4
H8
WT321164

1

A

2

B

3

H3

H3
H4

H4
H5

H5
H6

H6
H7

H7
H8

H8

R48

10

C

4

D

5

E

6

F

7

G

8

H

9

I

10

J

.047MM3C5.047MM3

V+ V+ V+ V+ V+

C26

.047MM3

V+ V+

C50

.047MM3

C7

.047MM3C8.047MM3

C28

.047MM3

C54

.047MM3

SR1
SR280058

SR2
SR280058

SR3
SR280059

SR4
SR280059

H9E
HDR321071

5

H9D

4

H9C

3

H9B

2

H9A

1

R53
15 1W

R54
15 1W

C27
.047MM3

C51
.047MM3

C29
.047MM3

C55
.047MM3

S4
DIP8S
S5
DIP8S

PCB1
80-3238-A

3

C12
.047MM3

V+V+

C30
.047MM3

V+ V+

C52
.047MM3

C14
.047MM3

C33
.047MM3

C56
.047MM3

HS1

HS704204
HS2
HS704203

I1

INS704209

1

BR1

BRDB102

4

2

C13
.047MM3

C31
.047MM3

C60
.047MM3

C16
.047MM3

C34
.047MM3

V-V-V-V-

C62
.047MM3

1
2
3
4
5

+24V

C65
470M35E

C64
470M35E

-24V

dbx Professional Products
8760 South Sandy Parkway

Sandy, Utah 84070
Title

dbx 3231L CH2 MAIN BOARD 80-3238

Size Document Number Rev

053243A0.005 A0

B

Date: Sheet of

C15
.047MM3

C32
.047MM3

V+

C61
.047MM3

C17
.047MM3

C35
.047MM3

V-

C63
.047MM3

WR1

1 2

W360023

U24
7815

1

I

2

I

U23
7915

Monday, October 25, 1999

C18
.047MM3

C36
.047MM3

V-V-V-V-V- V-V-

C22
.047MM3

V-V-V-V-V- V-V-

C38
.047MM3

V-V+

C6
10KT

C67
100S25E1

C66
100S25E1

+15
V+

V-

-15

5 5

3

O

G

2

1

G

3

O

C19
.047MM3

C37
.047MM3

C23
.047MM3

C39
.047MM3

C2
10KT

&l0(s0P(s15H(s8V(s0S&l6D&l66P&l3E&a7L&a120M&l61FDOD Software

053243a0

Page 1
dbx 3231L CH2 MAIN BOARD 80-3238 Revised: March 15, 1995
053243A0.000 Revision: A0
Bill Of Materials March 15, 1995 16:16:39
Quan Reference Part SYMAN Description
_______________________________________________________________________________________________________________

1 B1 BAR320301 32-0301 6 Position, PC Mount, Barrier Strip
1 B3 BAR320300 32-0300 2 Position, PC Mount, Barrier Strip
1 BR1 BRDB102 70-0129 Bridge Rectifer
34 C1,CD1,CD2,CD3,CD4,CD5, 27PJC3 62-0066 27 pF Cap 50V 20% Axial Monolithic
CD6,CD7,CD8,CD9,C10,CD10,
CD11,CD12,CD13,CD14,CD15,
CD16,CD17,CD18,CD19,C20,
CD20,CD21,CD22,CD23,CD24,
CD25,CD26,CD27,CD28,CD29,
CD30,CD31
2 C2,C6 10KT 62-0163 10 uF Cap 16V 10% Tantalum T&R
40 C4,C5,C7,C8,C12,C13,C14, .047MM3 62-0067 0.047 uF Cap 50V 20% Axial Monolithic
C15,C16,C17,C18,C19,C22,
C23,C24,C26,C27,C28,C29,
C30,C31,C32,C33,C34,C35,
C36,C37,C38,C39,C50,C51,
C52,C54,C55,C56,C60,C61,
C62,C63,C68
2 C11,C21 47S63E 60-0301 47 uF Cap 63V -20/+80% Elect
1 C25 47SE1 60-0054-01 47 uF Cap 16V -20/+20% Elect., T&R
2 C64,C65 470M35E 60-0060 470 uF Cap 35V -20/+20% Elect-S
2 C66,C67 100S25E1 60-0055 100 uF Cap 25V -20/+80% Elect-D T&R
20 CA1,CB1,CA2,CB2,CA3,CB3, .39H63P 62-0152 .39 uF Cap 63V 3% Poly. Film
CA4,CB5,CA6,CB6,CB7,CA8,
CB8,CA9,CA11,CB12,CA13,
CB13,CB14,CA15
20 CA14,CB15,CA17,CB17,CA18, .039H63P 62-0151 .039 uF Cap 63V 3% Poly. Film PET
CB18,CA19,CB19,CA20,CA21,
CB21,CB22,CA23,CB23,CB24,
CA25,CB25,CA26,CA30,CB31
22 CA29,CB30,CA32,CB32,CA33, .0039H63P 62-0150 .0039 uF Cap 63V 3% Poly. Film PET
CB33,CA34,CB34,CA35,CB35,
CA36,CB36,CA37,CB37,CA38,
CB38,CA39,CB39,CA40,CB40,
CA41,CB41
33 CC1,CC2,C3,CC3,CC4,CC5, 10NPSE1 60-0051-01 10 uF Cap 16V -20/+80% Elect., NP T&R
CC6,CC7,CC8,CC9,CC10,
CC11,CC12,CC13,CC14,CC15,
CC16,CC17,CC18,CC19,CC20,
CC21,CC22,CC23,CC24,CC25,
CC26,CC27,CC28,CC29,CC30,
CC31,C47
7 D1,D2,D7,D8,D9,D10,D11 1N4148 70-0002 1N4148 Silicon Switching Diode, 75 Volts PIV
1 D3 1N4001 70-0001 1N4001 Silicon Rectifier, 1 Amp, 50 Volts PIV
6 H1,H2,H3,H4,H7,H8 WT321164 32-1164 10 Circuit Wire Trap Connector, 2mm Pitch
1 H9 HDR321071 32-1071 5 Pin Header, 0.1" spacing, 0.025" sq pins Lockin
1 H11 HDR322111 32-2111 10 Pin Hdr, 5X2, Straight, .23", 0.1" spacing
2 H12,H13 HDR321063 32-1063 5 Pin Header, 0.1" spacing, 0.025" sq pins, 0.43" pins
1 HS1 HS704204 70-4204 Heatsink, 3 Regulator, Top

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1 HS2 HS704203 70-4203 Heatsink, 3 Regulator, U-Shape Base

053243a0

1 I1 INS704209 70-4209 Insulator, 3 Regulator Heatsink
2 J1,J4 J322110 32-2110 Jack, 1/4" Phone, PCB Mount, Hor., Cliff S2
DOD Software Page
dbx 3231L CH2 MAIN BOARD 80-3238 Revised: March 15, 1995
053243A0.000 Revision: A0
Bill Of Materials March 15, 1995 16:16:39
Quan Reference Part SYMAN Description
_______________________________________________________________________________________________________________

1 J2 J322115 32-2115 XLR, Ins, Female PC Mount, R/A
1 J3 J322114 32-2114 XLR, Ins, Male PC Mount, R/A
1 K1 RLY725143 72-5143 DPDT Relay Switch
6 L1,L2,L3,L4,L9,L10 EMI1000PF 62-2101 1000 pF Filter, EMI, SUPP, 50V
1 PCB1 80-3238-A 80-3238-A dbx 3000 SERIES EQ MAIN PCB RAW
6 PJ1,PJ2,PJ3,PJ4,PJ5,PJ6 PJ ---- This is not a part.
4 Q1,Q2,Q3,Q5 J112 70-1012 J112A JFET, National Only
1 Q4 2N5088 70-1007 2N5088 NPN, T&R
1 Q11 2N6427 70-1150 2N6427 Darlington
2 R1,R2 49.9K 1% 52-0020 49.9 KOhm Resistor 1% 1/4 Watt Metal Film
4 R3,R8,R9,R14 13.3K 1% 52-0053 13.3 KOhm Resistor 1% 1/4 Watt Metal Film
4 R4,R7,R12,R15 4.42K 1% 52-0120 4.42 KOhm Resistor 1% 1/4 Watt Metal Film
4 R5,R6,R13,R16 1.00K 1% 52-0133 1.00 KOhm Resistor 1% 1/4 Watt Metal Film
1 R10 330 50-0005 330 Ohm Resistor 5% 1/4 Watt Carbon Film
1 R11 220K 50-0040 220 KOhm Resistor 5% 1/4 Watt Carbon Film
1 R17 200K 1% 52-0276 200 KOhm Resistor 1% 1/4 Watt Metal Film
1 R18 75K 50-0033 75 KOhm Resistor 5% 1/4 Watt Carbon Film
2 R38,R41 2.00K 1% 52-0186 2.00 KOhm Resistor 1% 1/4 Watt Metal Film
1 R39 2M 50-0046 2 MOhm Resistor 5% 1/4 Watt Carbon Film
1 R40 340K 1% 52-0254 340 KOhm Resistor 1% 1/4 Watt Metal Film
1 R48 10 50-0001 10 Ohm Resistor 5% 1/4 Watt Carbon Film
1 R52 0 50-0050 0 Ohm Resistor 5% 1/4 Watt Carbon Film
2 R53,R54 15 1W 50-1153 15 Ohm Resistor 5% 1 Watt MOF Flameproof
3 RA1,RA14,RA24 100K 1% 52-0305 100 KOhm Resistor 1% 1/4 Watt Metal Film
3 RA2,RA17,RA27 78.7K 1% 52-0071 78.7 KOhm Resistor 1% 1/4 Watt Metal Film
3 RA3,RA10,RA20 121K 1% 52-0297 121 KOhm Resistor 1% 1/4 Watt Metal Film
3 RA4,RA12,RA22 39.2K 1% 52-0079 39.2 KOhm Resistor 1% 1/4 Watt Metal Film
3 RA5,RA13,RA23 61.9K 1% 52-0072 61.9 KOhm Resistor 1% 1/4 Watt Metal Film
3 RA6,RA15,RA25 30.1K 1% 52-0083 30.1 KOhm Resistor 1% 1/4 Watt Metal Film
3 RA7,RA16,RA26 48.7K 1% 52-0076 48.7 KOhm Resistor 1% 1/4 Watt Metal Film
3 RA8,RA18,RA28 15.4K 1% 52-0096 15.4 KOhm Resistor 1% 1/4 Watt Metal Film
3 RA9,RA19,RA29 24.3K 1% 52-0086 24.3 KOhm Resistor 1% 1/4 Watt Metal Film
3 RA11,RA21,RA31 19.6K 1% 52-0092 19.6 KOhm Resistor 1% 1/4 Watt Metal Film
1 RA30 12.1K 1% 52-0103 12.1 KOhm Resistor 1% 1/4 Watt Metal Film
3 RB1,RB14,RB24 23.2K 1% 52-0087 23.2 KOhm Resistor 1% 1/4 Watt Metal Film
3 RB2,RB17,RB27 18.2K 1% 52-0093 18.2 KOhm Resistor 1% 1/4 Watt Metal Film
3 RB3,RB10,RB20 28.7K 1% 52-0084 28.7 KOhm Resistor 1% 1/4 Watt Metal Film
3 RB4,RB12,RB22 9.09K 1% 52-0109 9.09 KOhm Resistor 1% 1/4 Watt Metal Film
3 RB5,RB13,RB23 14.3K 1% 52-0099 14.3 KOhm Resistor 1% 1/4 Watt Metal Film
3 RB6,RB15,RB25 7.15K 1% 52-0113 7.15 KOhm Resistor 1% 1/4 Watt Metal Film
3 RB7,RB16,RB26 11.5K 1% 52-0104 11.5 KOhm Resistor 1% 1/4 Watt Metal Film
3 RB8,RB18,RB28 3.65K 1% 52-0122 3.65 KOhm Resistor 1% 1/4 Watt Metal Film
3 RB9,RB19,RB29 5.76K 1% 52-0116 5.76 KOhm Resistor 1% 1/4 Watt Metal Film
3 RB11,RB21,RB31 4.64K 1% 52-0118 4.64 KOhm Resistor 1% 1/4 Watt Metal Film
1 RB30 2.87K 1% 52-0126 2.87 KOhm Resistor 1% 1/4 Watt Metal Film
3 RC1,RC14,RC24 13.0K 1% 52-0101 13.0 KOhm Resistor 1% 1/4 Watt Metal Film
3 RC2,RC17,RC27 10.2K 1% 52-0106 10.2 KOhm Resistor 1% 1/4 Watt Metal Film

Page 2

3 RC3,RC10,RC20 16.2K 1% 52-0095 16.2 KOhm Resistor 1% 1/4 Watt Metal Film

053243a0

3 RC4,RC12,RC22 5.11K 1% 52-0117 5.11 KOhm Resistor 1% 1/4 Watt Metal Film
3 RC5,RC13,RC23 8.06K 1% 52-0111 8.06 KOhm Resistor 1% 1/4 Watt Metal Film
3 RC6,RC15,RC25 4.02K 1% 52-0121 4.02 KOhm Resistor 1% 1/4 Watt Metal Film
3 RC7,RC16,RC26 6.49K 1% 52-0114 6.49 KOhm Resistor 1% 1/4 Watt Metal Film
DOD Software Page
dbx 3231L CH2 MAIN BOARD 80-3238 Revised: March 15, 1995
053243A0.000 Revision: A0
Bill Of Materials March 15, 1995 16:16:39
Quan Reference Part SYMAN Description
_______________________________________________________________________________________________________________

3 RC8,RC18,RC28 2.05K 1% 52-0129 2.05 KOhm Resistor 1% 1/4 Watt Metal Film
3 RC9,RC19,RC29 3.24K 1% 52-0124 3.24 KOhm Resistor 1% 1/4 Watt Metal Film
3 RC11,RC21,RC31 2.61K 1% 52-0127 2.61 KOhm Resistor 1% 1/4 Watt Metal Film
1 RC30 1.62K 1% 52-0131 1.62 KOhm Resistor 1% 1/4 Watt Metal Film
64 RD1,RE1,RD2,RE2,RD3,RE3, 10.0K 1% 52-0107 10.0 KOhm Resistor 1% 1/4 Watt Metal Film
RD4,RE4,RD5,RE5,RD6,RE6,
RD7,RE7,RD8,RE8,RD9,RE9,
RD10,RE10,RD11,RE11,RD12,
RE12,RD13,RE13,RD14,RE14,
RD15,RE15,RD16,RE16,RD17,
RE17,RD18,RE18,RD19,RE19,
RD20,RE20,RD21,RE21,RD22,
RE22,RD23,RE23,RD24,RE24,
RD25,RE25,RD26,RE26,RD27,
RE27,RD28,RE28,RD29,RE29,
RD30,RE30,RD31,RE31,R36,
R37
2 S4,S5 DIP8S 70-3020 8 Pin Dip Socket
2 SR1,SR2 SR280058 28-0058 Screw, 6-32 x 3/8", Pozi-pan, Black
2 SR3,SR4 SR280059 28-0059 Screw, 6-32 x 1/4", Pozi-pan, Black
1 SW1 SW440131 44-0131 4PDT Slide Switch, 2MM Actuator, RA
17 U1,U2,U3,U6,U7,U8,U9,U10, MC33078 72-4248 Dual OP-AMP
U11,U12,U13,U14,U17,U18,
U19,U21,U22
1 U4 SSM2141 72-4256 SSM2141P Differential Line Receiver
1 U5 SSM2142 72-4252 Balanced Line Driver
1 U23 7915 70-4124 7915 -15 Volt 1 A Voltage Regulator TO-220
1 U24 7815 70-4123 7815 +15 Volt 1 A Voltage Regulator TO-220
2 WA1,WA4 WA283449 28-3449 Washer, Ground, Int tooth, for Cliff S2 Jack
1 WR1 W360023 36-0023 Wire, 2 End, 8.00", Black, 20AWG, UL1015

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