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REV DESCRIPTION ECN# DATE REVISION DESCRIPTION ECN# DATE
P1 VARIOUS CHANGES ---- 12.22.94
A0 CHANGES R173 & R202 1M TO 39.2K 1% ---- 1.17.95
B0 VARIOUS HOLES SIZES CHANGES IN PCB. ---- 3.1.95
B1 REPLACE WIRE 36-0052 W/ 36-1140 330 4.11.95
B2 ADD 2 16 PIN DIP SOCKETS 516 8/28/95
B3 REMOVE 4 14-PIN IC SOCKETS 647 12.13.95
B4 STANDARDIZE FILM CAPS 714 1.17.96
B5 REMOVE C59 & C60 842 4.3.96
B6 CHANGE QT283332 TO QT322102 905 4.29.96
|LINK
|056207B6.001
|056207B6.002
|056207B6.003
|056207B6.004
|056207B6.005 dbx Professional Products
|056207B6.006
8760 South Sandy Parkway
Sandy, Utah 84070
Title
dbx 166A DUAL COMPRESSOR/EXPANDER 80-6207
Size Document Number Rev
B 056207B6.000 B6
Date: Thursday, October 21, 1999 Sheet 0 of 6
U18A
4
TL074
BALANCED INPUT CHANNEL 1 C45
3
1
J11 27PJC3 2
J322115
+15V R163 U18D
1 2 IN1+ R161 TL074
TP500317 20.0K 1%
4 J105-2 +15V R145 13
33.2K 1% TP8 14
R165 49.9K 1%
C46 12
3
IN1- 5.1K 47PJ100M3
2
1
+15V -15V R148
J12 R160 49.9K 1%
8
5
7
3
J322110 49.9K 1% R172
2 6 20.0K 1% R164
5 7 1 8 2 PEAKSTOP THRESHOLD LINK
2.00K 1% R147
4 C63 5 1
1 1000PJ100M3 U25 3 4.32K 1%
U20B C49 UPC1252 J1
6 R159 NE5532 U20A 1
22NPM25E1 J105-1
2
4
6
NE5532 +15V -15V J105-2 2
49.9K 1%
3
4
PEAKSTOP R146 3
3
-15V LEVEL 4
7.50K 1%
R139 2 6 5
J105-5
33.2K 1% C35 +15V 7 6
P6
27PJC3 VCA SYM 5 7
20K402121
1
1
C64 8
SIDE CHAIN 2 P17 R87 U18B 9
1000PJ100M3 VCA CV LINK J105-9
TL074
11
50K420222 3K J105-10 10
J8 R168 R169 11
R162 J105-11
J322110
3
47 150K D52 12
2.00K 1% D53 +15V
2 -15V 1N4148 13
1N4148 J105-13
5 14
-15V
4 C57 +15V OUTPUT 15
1 1000PJ100M3 R203 R167 R171 GAIN 16
3
6 200 1% 2.00K 1% 5.76K 1%
2 P5 RC321155
COMP 1 CV R157
3
10K402122
C4 6.04K 1%
1
.39J J1A
-15V
U18C DIP16S
C58 OPTIONAL TL074 R156 U19A
1000PJ100M3 10 10.0K 1% NE5532 R158
8 2 60.4 1%
+15V 9 1
WA8 WA12 R166 GAIN TRIM 3
1
WA283449 WA283449 1.62K 1% R173
2 P19 R136 R138
GATE 1 CV
4
OMIT 10.0K 1% 2.67K 1% R155
OMIT 50K420222 -15V IN1-
4.53K 1%
1
2
1
2
3
D54 39.2K 1%
1N4148 -15V R135 IN1+
20.0K 1% R153
R170 3.16K 1%
BALANCED OUTPUT
100 1%
SW4B
RMS TRIM R149 R151 J9
3.16K 1% SW440026 J322114
3.24K 1%
P15 +15V 4 10
50K420222 5 11 2 1
3 1 6 12 4
-15V
R152
SW4D
4.53K 1%
2
3
R40 R38
24.9K 1% 49.9K 1% +15V BYPASS
J105-10 U19B
8
NE5532 7 1 J10
R39 5 8 2 2 J322110
R43 20 7 9 3 5
SW5B SW5D 24.9K 1% 6 4
4 10 R154 SW4C SW4A 1
5 11 60.4 1% SW440026 6
6 12 R42 U9 R150
3
16.9K 1% 4 3
SYM GND 5.76K 1%
1 7
SW440026 2 IN OUT 6 RMS 1 OUT
BIAS CAP C61 C62
CONTOUR C5 8 5 C44
V+ V- -15V 1000PJ100M3 1000PJ100M3
.047J 10PJ100M3
R97 UPC1253
22M RMS LINK WA10
R137 WA283449
C19 R120 10.0K 1%
+15V .15J 499 1%
R41 C3
.1MD3
1
2
560K
R37 R121
-15V C15 1.5M 10M
1M50E1
-15V D34
LEDG702062
D35
LEDG702062
C17
.0047J
C20
.39J
9 dbx Professional Products
8
10 8760 South Sandy Parkway
Sandy, Utah 84070
U10C
TL074
Title
dbx 166A DUAL COMPRESSOR/EXPANDER 80-6207
Size Document Number Rev
B 056207B6.001 B6
Date: Thursday, October 21, 1999 Sheet 1 of 6
OPTIONAL
CHANNEL 1
THRESHOLD TRIM
+15V R88
OMIT
3
P16 412K 1%
2
OMIT
50K420278
1
-15V
+15V
+15V
COMPRESSOR R58 R59 R52
1
THRESHOLD 412K 1% 280K 1%
10.0K 1%
2
P3 J105-5
20K402121 R83 D33
3
10.0K 1% 1N4148
-15V R57
10.0K 1%
-15V OVER EASY
J105-11
R60
D28 SW1B SW1A
4.99K 1%
6 1N4148 4 1 +15V
RMS 1 OUT R55
7 5 2
2
1
5 6 3 523K 1%
R86
1.5M U12B SW440027 R54 R35 R53
TL074
11
TP2 523K 1% R116 1M 200K 1%
TP500317 Q4
10.0K 1%
-15V
J105-9
R56 R115 2N4402 7 1 MODE
U12A
4
280K 1% 10.0K 1% 8 2
TL074
2 1 9 3
TP3 -15V
1 2
3 TP500317 SW3C SW3A
SW440026
G.R. METER LINK
R45
D37 R117 5.76K 1%
R85 +15V 1N4148 39.2K 1%
COMPRESSOR 4.99K 1% J105-1
RATIO R44 C32
U12D
D40 7.15K 1%
3
TL074 R112 R114 U12C 2.2M50E1
P4 2 12 1N4148 39.2K 1% TL074
20.0K 1%
20K402121 14 9
13 8
COMP 1 CV
1
D39 C21 10
.22J
1N4148 GATE 1 CV
4 R113 10 R33
5 R34 20.0K 1% 11 10.0K 1%
6 10.0K 1% 12
R84 R123
C23
100 1% 1.74K 1% C22
SW3B 2.2M50E1 SW3D
2.2M50E1
SW440026 SW440026
MODE MODE
R49 R48
124K 1% 124K 1%
+15V
+15V -15V
R51 D27
U11C U11A 6.34K 1% 6 1N4148
U10B
CA3046D CA3046D U11B TL074 7
8 7 1 3 3 5 5
+15V
2
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