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REVISION DESCRIPTION ECN# DATE REVISION DESCRIPTION ECN# DATE
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, 1390 04/10/97
CHANGE 70-4131 TO 704124
A4 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
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 1402 9/7/00
MOVE C753 (60-0402) TO THE 05 LEVEL
MOVE C704L,C704R,C705L AND C705R (62-0041) TO THE 12 LEVEL
|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
B 056181A7.000 A7
Date: Wednesday, November 01, 2000 Sheet 0 of 3
S3A
R714L SW440131A
84.5K 1% 1 120 Hz
2
C706L 3 80 Hz
C705L 33PJ100D R715L
CHANNEL 1 220PJ100D
42.2K 1%
R710L
R708L 7.50K 1%
R703L 10.0K 1%
7.50K 1%
+15V IC17A
INPUT +15V TL072D S1C
8
+15V
J701L C707L C708L SW440131A
8
R701L 6 C710L C711L 2
J323135
8
11.0K 1% R705L 6 1J63F 1J63F 7 .033J .033J 1 7 XOVER
3 6 10.0K 1% 7 5 3 8
7 5 9 NORM +15V OUTPUT
2 R702L 5 IC3B 13
R707L IC4B R716L IC7B J702L
4
8
11.0K 1% IC2B TL072D R712L R727L
10.0K 1% TL072D NE5532 J323135
1
TL072D 15.0K 1% 169K 1% -15V 5 47
R706L 7 2
10.0K 1% 120 Hz 4 R724L 6
R704L R717L
C704L 5 10.0K 1% R725L 3
7.50K 1% 84.5K 1%
220PJ100D 80 Hz 6 931 1%
1
BYPASS
S3B
S2A SW440131A
SW440051 R726L
1 2.00K 1%
2
3
LF BOOST
R729R C716R R794R VR705B
R1 R5
10.0K 1% .33J 20K402091
7.50K 1% 10.0K 1% 10.0K 1%
4 6
R730R C715R +15V +15V
5
22K .22J R2
8
8
10.0K 1%
6 6
7 7 SUBWOOFER
5 R3 5 LEVEL
SUBHARMONIC OUT
IC12B 10.0K 1% SUBWOOFER
TL072D IC9B VR710 OUTPUT
FREQUENCY SYNTHESIS IN NE5532 20K402090
IC9A J703
1
LF BOOST R4 R10
R6 2 3 NE5532 J323135
10.0K 1% 10.0K 1% 47
R729L C716L VR705A 1 2
R794L
10.0K 1% .33J 20K402091 R7 2
7.50K 1%
3
1 3 20K R8 3
3.92K 1%
IC12A
4
1
R730L C715L
TL072D
2
22K .22J -15V
2
1
3 R9
2.00K 1%
S3C
4
-15V R714R SW440131A
84.5K 1% 7
8 120 Hz
9
C705R C706R R715R 13 80 Hz
220PJ100D 33PJ100D 42.2K 1%
CHANNEL 2
R710R
R703R R708R 7.50K 1%
7.50K 1% 10.0K 1%
+15V
R706R IC4A S1D
8
INPUT
10.0K 1% IC3A TL072D C710R C711R SW440131A
IC2A 6
J701R TL072D C707R C708R 2 7 10
R701R TL072D .033J .033J XOVER
J323135 11.0K 1% R705R 2 1J63F 1J63F 1 5 11 OUTPUT
3 2 10.0K 1% 1 3 12 NORM IC7A
1 3 14 J702R
IC17B NE5532 R727R
2 3 R716R 3 J323135
R702R R707R TL072D 47
169K 1%
4
11.0K 1% R712R 1 2
10.0K 1% R724R
1
4
15.0K 1% -15V 2
R717R 10.0K 1%
4
-15V 10 R725R 3
-15V 120 Hz 11 84.5K 1% 931 1%
4
1
C704R 12
R704R
220PJ100D 80 Hz 14 -15V
7.50K 1% BYPASS
S3D
S2B SW440131A R726R
SW440051 2.00K 1%
4
5
6
dbx Professional Products
8760 South Sandy Parkway
Sandy, Utah 84070
Title
dbx 120XP SUBHARMONIC SYNTHESIZER 80-6181
Size Document Number Rev
B 056181A7.001 A7
Date: Wednesday, November 01, 2000 Sheet 1 of 3
R737 C720
24.3K 1% .10J
+15V IC10A
TL072D
+15V
IC11B
8
R739 R740 R741 2
TL072D C717 C718
8
6 3.92K 1% 110K 1% 15.0K 1% 1
5 .10J .10J 7 3
FREQUENCY SYNTHESIS IN
7 5
6
4
R738 C719 C721
IC10B .33J
47.5K 1% TL072D .010J -15V
R736
10.0K 1%
R735
BYPASS OMIT
S2D
SW440051
10
11
12
TP9
0-R
R747 30Hz LED METER
TP7 100K IC6A
0-R
TL072D
R748
+15V 30HZ 2 2.49K 1%
C723
1
R742 R745 1
VR708
8
.10J 2 3
75.0K 1% 100K 20K402090
6
7 R803
3
4
60 HZ R744 R746 5 100K
150K 1% 100K IC15B -15V
TL072D
C724
.10J C825 C727
2 .010J 1J63F
1
3 2N3904 CR705
R743 R749
IC15A 3 1N4148
4.87K 1% 4.7K
TL072D R901 2
Q708
4
22M
-15V C726 R754
1
1J63F 10.0K 1%
R753 IC13A
5 2
100K 3 D Q
R750 -15V
4 CLK 1 C750
4.7K R751
+15V 6 R Q .10J
4.7M S C752
R752
.10J
8
15K R755 CD4013
5 10.0K 1% R798
2 7 150K 1%
IC16A
1 6 +15V
TL072D 3 CR706
IC16B C753
8
1N4148
TL072D 6 22NPM25E1
R799 R7A1
4
2 221K 1% 27.4K 1% 7
-15V 1 5
1
TP10 3
0-R IC8A 2
TL072D IC8B SUBHARMONIC OUT
C751
TL072D
4
.010J VR711 R7A2
3
R760 -15V 20K402090 100K
TP8 100K +15V
0-R SUBHARMONIC
8
R761 LEVEL
C729 +15V 6 2.49K 1%
1
R756 R759 7
.10J VR709
8
49.9K 1% 2 5
100K 6 20K402090
IC6B
7 45HZ R804 TL072D 45Hz LED METER
3
90HZ R758 R765 5 100K
100K 1% 100K IC18B
TL072D
C730
.10J C826 C733
2 .010J 1J63F
1
R757 3 2N3904 R762
IC18A
3
3.24K 1% 4.7K
TL072D R902 2
Q709
C732
4
22M
-15V 1J63F R768 2
CR707
1
1N4148 10.0K 1% 1
3
IC11A
-15V TL072D
4
R767 IC13B VSS VDD +15V
9 12 -15V
R763 100K D Q
R764 11
4.7K 10 CLK 13
4.7M R Q
+15V 8
R766 S
8
15K R769 CD4013
5 10.0K 1%
2 7
IC14A 1 6 dbx Professional Products
3 IC14B CR708
TL072D 1N4148
TL072D 8760 South Sandy Parkway
Sandy, Utah 84070
4
-15V Title
dbx 120XP SUBHARMONIC SYNTHESIZER 80-6181
Size Document Number Rev
B 056181A7.002 A7
Date: Wednesday, November 01, 2000 Sheet 2 of 3
+15V
RL7
1.21K 1%
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