H:\MC22\100456-1.SCH 3-Feb-1998
NOTES (UNLESS OTHERWISE SPECIFIED):
1. ALL RESISTORS 1/4W 1% METAL FILM
2. ALL SWITCHES SHOWN IN THEIR 'OUT' OR 'OFF'
POSITION
CHANNEL 2 IN
CHANNEL 1 IN
100456-2.SCH
100456-3.SCH
SKH 2-9-96 RGH 2-9-96
NEW DOC# FJ 3FEB98
CHECKED BY:DRAWN BY:
GND
COMPRESSOR
POWER
GND
R46
20K
R142
20K
47pF
ACTION:
NO CHANGE TO PART,
GND
GND
C61
100K
GND
GND
1K
20K
R138
R80
TL072
22/25
R150
100
J9
3.74K
GND
100K
XLR FEM
1
2
3
GND
+
-J1
1K
9.09K
10K
R71
330pF
R1
6
Z1B
R7
TL072
R72
1K
C1
9.09K
R2
5
10K
R8
GND
7
22/25
C3
100KB DET
LEVEL
R81
R42
20K
+15dB
-15dB
GND
-15
4
3
TL072
47pF
C15
R37
20K
2
Z1A
+15
8
1
22/25
C56
GND
R135
20K
1 IN 1 OUT
R3
12
-15
R77
10K
13
Z5D
TL074
14
R12
10K
R
OL
D9
GND
-15-5V
GND
R41
20K
3
2
4
R145
TL072
22/25
100
Z3A
1
C54
R143
R63
+15
10K
8
47pF
C14
GND
5
6
Z3B
TL072
COMPRESSOR
TO SHEET 2
COMPRESSOR IN/OUT
W4
.6
2P2T
S1A
22/25
C57
R136
20K
R57
20K
R38
20K
47pF
GND
GND
W1
.6
6.81K
R147
R39
20K
3
2
Z2A
C13
100K
+15
84
TL072
1
22/25
C4
R64
R59
100
-15
7
PHONO
GND
XLR FEM
J10
GND
J2
1
2
3
+
-
1K
9.09K
10K
R73
330pF
R4
6
R13
Z4B
TL072
R74
1K
C2
9.09K
R5
5
R14
10K
GND
PHONO
GND
7
22/25
C6
100KB DET
LEVEL
R48
20K
GND
-15
4
TL072
+15dB
3
Z4A
R82
-15dB
R43
20K
2
47pF
C18
+15
8
1
GND
C60
100K
GND
GND
5817
D1
10K
R10
1/35
C21
+
R65
100K
R79
1K
-1V
10
9
Z5C
TL074
8
R11
10K
G
+4dBu
D7
-15
20K
R9
R148
20K
5
6
Z2B
-15
TL072
7
22/25
C5
GND
R137
R60
100
5817
1/35
+
100K
C22
R68
10
TL074
10K
+4dBu
D2
10K
R16
3.74K
-1V
9
Z6C
8
R17
G
D8
-15
10K
R6
R78
12
13
Z6D
TL074
14
R18
10K
R
OL
D10
-15-5V
.6
-15
22/25
GND
R141
20K
GND
20K
6
Z14B
7
R62
20K
R15
5
C8
GND
R47
GND
3
2
Z8A
100K
4
R146
TL072
22/25
+15
8
47pF
1
C55
GND
R144
100
-15
TL072
R58
20K
GND
R44
R66
10K
20K
47pF
C17
GND
5
6
Z8B
7
W24
2 IN 2 OUT
COMPRESSOR
TO SHEET 2
C59
6.81K
-15
C16
100K
R67
GND
R149
22/25
100
20K
2P2T
S2A
W17
.6
20K
R45
3
2
Z14A
84
TL072
1
C7
R61
22/25
C58
R140
COMPRESSOR IN/OUT
+15
GND
GND
R40
20K
R139
20K
47pF
GND
10802 47th Avenue West
Mukilteo WA 98275-5098
SHEET:
1 3
SCHEM: L&R IN/OUT MC 22
of
100456
GND
J6
PHONO
GND
CHANNEL 2 OUT
- J5
3
1
2
XLR MALE
+
GND
PHONO
J4
GND
3
1
J3
XLR MALE
+
2
CHANNEL 1 OUT
H:\MC22\100456-2.SCH 3-Feb-1998
FROM SHEET 1
2 IN
GND
-15
1/50
C27
FROM SHEET 1
1 IN
R20
10K
22/16
R19
10K
REC1
C9
+
9
1/2 SSM 2120
2V
GND +15 -15
22
C49
1.5M
0.1
22/16
+
R83
C10
22/16
V+
21
C33
0.1
V-
11
C23
+
2
Iin
GND
R75
V+
1K
TH 1 CON 1 +Vc 1
1
R100
40.2K
22/16
C12
GND
+
22/16
C24
+
-15
C28
1/50
1.5M
13
R84
22/16
C11
+
15
REC2
1/2 SSM 2120
2V
Iin
GND
R76
V+
1K
TH 2 CON 2 -Vc 2
12
40.2K
R101
ACTION:
R117 & R118 WERE 2.49K
D3 & D5 WERE 5817
CHECKED BY:DRAWN BY:
RGH 2-9-96
10802 47th Avenue West
Mukilteo WA 98275-5098
GND
-15
GND GND
3
Z7A
4
1
2 OUT
FROM SHEET 1
-15
2
8
TL072
R112
RATIO
1P2T
+15
COMP.
S3A
100K
100K
+15
R97
10K
GND GND
R96
51.1
.0022
C26
33.2K
+Vc 2
V-
R86
IN 2
16
14
-Vc 2
+Vc 2LOG AV2
R105
33.2K
200K
R87
+15
-15
GND
19
18
R90
12.4K
R109
R117
2.21K
47pF
C19
CFT 2
Z9B
SSM2120
100K
5
6
Z5B
100K
TL074
7
4148
D3
4.75K
R107
10K
-Vc 2
GND
2
Z5A
-15
TL074
1
DOWNWARD EXPAND
FIXED THRESHOLD -55dBu
FIXED RATIO 2:1
R26
5.11K
THRESHOLD
Y
-15
R51
-15
R52
R28
3
+15
411
D17
R94
200
-15
100KB
R54
+15
W20
.6
R53
GND
5
6
Z7B
TL072
7
W11
.6
1 OUT
FROM SHEET 1
OUT 2
20
13.3K
GND
R113
-15
I ref
GND
GND
0.1
3
TL074
-40
THRESHOLD
100KB
C42
100K
R69
6
TL074
4.42K
4148
17
Z10A
4.42K
R132
Z10B
GND
1
R115
COMP
TL074
7
R119
200
2
411
100KB
10
Z10C
D4
5
R131
8
R93
+15
+20
12.4K
9
1:1 => 10:1
LINK
V-
33.2K R89
R85
IN 1
.0022
8
C25
-Vc 1
R95
51.1
3
+Vc 1
-Vc 1LOG AV1
33.2K
200K
+15
-15
GND
R88
47pF
12.4K
2.21K
R111
R118
C20
FIXED RATIO 2:1
7
6
CFT 1
Z9A
SSM2120
100K
R55
W22
.6
5
6
Z6B
100K
-Vc 1
-15
R56
7
W21
D5
R30
10K
R108
GND
3
2
Z6A
411
TL074
1
5.11K
R29
Y
EXPAND
-15
TL074
.6
4148
4.75K
DOWNWARD EXPAND
FIXED THRESHOLD -55dBu
-15
D18
R92
200
100KB
R104
+15
OUT 1
4
+15
13.3K
GND
R114
I ref
I ref
GND
0.1
10
GND
TL074
-40
THRESHOLD
100KB
C41
100K
R70
6
TL074
.6
4.42K
5
4.42K
R134
4148
Z12B
GND
10
Z12C
8
R116
COMP.
12
5
7
W18
R120
200
9
100KB
Z12D
14
D6
R91
R106
150K
+20
12.4K
R133
13
TL074
1:1 => 10:1
LINK
R110
RATIO
100K
100K
COMP.
+15
R98
10K
R50
+15
R49
R36
SHEET:
2 3
SCHEM COMPRESSOR MC 22
of
100456
10K
60.4K
R122
-15
W19
.6
10
9
Z13C
TL074
8
R31
10K
G
D22
24
GND
R130
75
TL074
D21
R126
150
12
13
Z13D
-15
14
R32
10K
G
12
TL074
R129
+Vc 1
75
3
Z13A
10K
D20
6
5
2
Z13B
+15
411
TL074
1
R33
G
7
10K
D19
3
10K
GND
3
6
Z12A
-15
TL074
1
5.11K
R34
G
R35
Y
D12
0
R124
301
R103
2
411
10K
+15
GAIN REDUCTION
-15
R27
60.4K
R121
-15
TL074
10K
D16
R123
301
10
9
Z11C
TL074
8
10K
R21
G
D15
24
GND
R128
75
R125
150
12
13
Z11D
-15
14
R22
G
12
TL074
10K
D14
R127
+Vc 2
75
5
3
2
Z11A
1
R23
G
6
6
Z11B
+15
411
TL074
7
R24
10K
G
D13
3
GND
TL074
5.11K
D11
12
Z10D
0
10K
13
14
R25
Y
R102
GAIN REDUCTION
-15
H:\MC22\100456-3.SCH 3-Feb-1998
SKH 2-9-96 RGH 2-9-96
ACTION:
NO CHANGE TO PART,
NEW DOC# FJ 3FEB98
CHECKED BY:DRAWN BY:
10802 47th Avenue West
Mukilteo WA 98275-5098
GND
W32
SHIELD
SHIELD
W33
W28
.4
W10
.4
W7
.4
GND
GRN
LINECORD
H
N
J8A
J8B
BLK
WHT
J7A
J7B
FOR 120v
FOR 230v)
190mA
(150 mA
P1
120V UNITS 230V UNITS
W2
.4W3.4
C52
0.1
C51
0.1
C48
0.1
C47
0.1
DECOUPLING CAPS
C46
0.1
W31
.4
W29
.6
.4
.6
.4
.4
.4
.4
-15
W30
.6
W25
W26
.4
W23
W16
.6
W14
W15
.4
W12
W13
.4
W8
W9
.4
W6
W5
.4
+15
+15
-15
JUMPERS
C45
0.1
C44
0.1
C43
0.1
C40
0.1
C39
0.1
C38
0.1
+15
-15
81
S4A
REG ASSY
7915
4004
W34 .4
ONLYONLY
2 7
0.01
C63
R152
7.5K
GND
4004
D24
D26
+
C30
2200/35
C35
0.1
Q1B
10/16
C32
+
C37
0.1
GND
D27
POWER
Y
-15
4 5
LP-30-200
T1
0.01
63
C62
R151
7.5K
POWER SUPPLY
S4B
2P2T
4004
4004
D25
D23
W27
.4
+
C29
2200/35
C34
0.1
7815
Q1A
10/16
C31
+
C36
0.1
R99
5.11K
+15
SHEET:
3 3
SCHEM POWER MC 22
of
100456
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