dbx 120-XP Schematic
ECN# DATE ECN# DATEDESCRIPTIONREVISIONREVISION DESCRIPTION
A0 NEW SCHEMATIC REV A0 RELEASE TO PRODUCTION 5.1.95---
A1 CHANGE RL10, RL8 TO 1.62K 1% 346 5.9.95
A2 DELETED 70-4130 ADDED 70-4123 1328 1/23/97
A3 CHANGE 44-0026 TO 44-0051, CHANGE 70-1037 TO 70-1004,
A4
CHANGE 70-4131 TO 704124
DELETE 10 JUMPER TEST POINTS, 36-0095 1904 12/14/97
CHANGE PARTS TO AUTO-INSERTION PARTS 56-5054 TO 56-0009
56-3104 TO 56-0014 56-3110 TO 56-0015
56-3109 TO 56-0012 56-5047 TO 56-0006
60-0322 TO 60-0402 60-0318 TO 60-0055
1390 04/10/97
A5 CHANGE 3 PIN HEADER FROM 32-2116 TO 32-1080 116 9/1/98
A6 C801 & C802, USE 60-1026 INSTEAD OF 60-1039 371 3/22/99
A7 ADD TEST POINTS TP1-10 WITH 0 OHM RESISTOR 50-0317
MOVE C753 (60-0402) TO THE 05 LEVEL
MOVE C704L,C704R,C705L AND C705R (62-0041) TO THE 12 LEVEL
1402 9/7/00
|LINK
|056181A7.001
|056181A7.002
|056181A7.003
dbx Professional Products
8760 South Sandy Parkway
Sandy, Utah 84070
Title
dbx 120XP SUBHARMONIC SYNTHESIZER 80-6181
Size Document Number Rev
056181A7.000 A7
B
Wednesday, November 01, 2000
Date: Sheet of
0 3
CHANNEL 1
INPUT
J701L
J323135
3
2
1
220PJ100D
SUBHARMONIC OUT
CHANNEL 2
INPUT
J701R
J323135
3
2
1
220PJ100D
R701L
11.0K 1%
R702L
11.0K 1%
C704L
R701R
11.0K 1%
R702R
11.0K 1%
C704R
C705L
220PJ100D
6
5
R704L
7.50K 1%
C705R
220PJ100D
2
3
R704R
7.50K 1%
R703L
7.50K 1%
+15V
8
7
IC2B
TL072D
R729R
10.0K 1%
R730R
FREQUENCY SYNTHESIS IN
R729L
10.0K 1%
R703R
7.50K 1%
IC2A
TL072D
1
4
-15V
S3A
IC17A
TL072D
-15V
SW440131A
+15V
8
IC17B
TL072D
SW440131A
1
120 Hz
2
3
80 Hz
S1C
SW440131A
1
4
7
R3
10.0K 1%
R4
10.0K 1%
S3C
7
8
9
13
R1
10.0K 1%
R2
10.0K 1%
120 Hz
80 Hz
7
XOVER
8
9
NORM
13
R724L
10.0K 1%
R5
10.0K 1%
+15V+15V
8
6
7
5
R6
10.0K 1%
IC9B
NE5532
S1D
SW440131A
SUBWOOFER
LEVEL
VR710
20K402090
1
2
3
10
XOVER
11
12
NORM
14
R724R
10.0K 1%
+15V
8
IC7B
NE5532
5
7
6
3
2
R7
20K
-15V
3
2
-15V
4
IC9A
NE5532
4
IC7A
NE5532
R725L
931 1%
R726L
2.00K 1%
R10
47
1
R8
3.92K 1%
R9
2.00K 1%
R727R
47
1
R725R
931 1%
R726R
2.00K 1%
R727L
47
OUTPUT
J702L
J323135
2
3
SUBWOOFER
OUTPUT
J703
J323135
2
3
OUTPUT
J702R
J323135
2
3
1
1
1
R714L
C710L
C710R
.033J
SW440131A
169K 1%
S3B
169K 1%
S3D
84.5K 1%
R715L
42.2K 1%
C711L
.033J
R716L
4
5
6
R716R
R714R
84.5K 1%
R715R
42.2K 1%
C711R
.033J
10
11
12
14
2
3
R717L
84.5K 1%
6
5
R717R
84.5K 1%
C706L
33PJ100D
C707L
1J63F
5
2
15.0K 1%
C715R
.22J
C715L
.22J
15.0K 1%
R710L
7.50K 1%
C708L
1J63F
R712L
R710R
7.50K 1%
C708R
1J63F
R712R
+15V
8
6
7
5
IC4B
TL072D
8
6
5
IC12B
TL072D
IC12A
TL072D
2
3
4
-15V
IC4A
TL072D
2
3
4
-15V
.033J
120 Hz
80 Hz
SW440131A
7
1
1
120 Hz
80 Hz
R708L
10.0K 1%
+15V
8
R794R
7.50K 1%
R794L
7.50K 1%
R707R
6
5
R706L
10.0K 1%
C706R
33PJ100D
R708R
10.0K 1%
IC3A
TL072D
2
3
-15V
IC3B
TL072D
4
7
LF BOOST
VR705B
20K402091
4 6
LF BOOST
VR705A
20K402091
1 3
1
C707R
1J63F
R705L
10.0K 1%
R707L
10.0K 1%
BYPASS
S2A
SW440051
1
2
3
C716R
.33J
22K
C716L
.33J
R730L
22K
R706R
10.0K 1%
R705R
10.0K 1%
10.0K 1%
BYPASS
S2B
SW440051
4
5
6
dbx Professional Products
8760 South Sandy Parkway
Sandy, Utah 84070
Title
dbx 120XP SUBHARMONIC SYNTHESIZER 80-6181
Size Document Number Rev
056181A7.001 A7
B
Wednesday, November 01, 2000
Date: Sheet of
1 3
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