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
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