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C15 47pF R37 R72 20K +15 GND +15dB 3 .6 22/25 R136 20K GND -15 J1 XLR FEM
3 2 + -

C56 22/25 R135 20K W1 .6 20K R147 6.81K GND R57 20K GND R39 GND 1 1 IN 1 OUT TL072 COMPRESSOR TO SHEET 2 W4 C57 COMPRESSOR IN/OUT S1A 2P2T +15 3 2

8

R2 2 Z1A

R8

Z2A

1 TL072

C4 22/25

R59 100 R64 100K

8

1K R81 LEVEL 100KB DET -15dB 7 22/25 20K GND -15 C3 R42

9.09K

10K

+ 2 - 3

4

1

J3 XLR MALE -15 C13 R38 47pF 20K R63 10K C14 +15 47pF

C1 330pF 6 TL072 R71 1K 13 9.09K 10K R77 10K -5V 12 R3 3.74K 9 -1V R65 100K R79 1K GND
+

Z1B

4

5

GND

GND 6 5 GND Z3B 7 TL072 GND J4 PHONO

CHANNEL 1 OUT

R1

R7

CHANNEL 1 IN
GND J9 PHONO D1 R10 10K C21 1/35 GND GND 5817 GND 10

Z5D

14 TL074

R12 10K

R

2 -15 OL D7 20K 3 GND

8

1

D9

R41

Z3A

1 TL072

C54 22/25

R143 100 R145 100K

Z5C

8 TL074

R11 10K

G

4
-15 -15 +4dBu R9 20K R148 20K GND R40 20K GND 47pF R139 20K

GND 5 6 Z2B 7 TL072 C60 C5 22/25 R60 100 R137 100K GND

C18 R43 R74 1K 10K GND 9.09K R5 R14 R82 LEVEL 100KB DET -15dB 2 +15dB 3 C2 330pF 6 Z4B 7 TL072 5 C6 22/25 R48 20K GND 20K 47pF +15

C58 22/25 R140 20K GND COMPRESSOR IN/OUT W17 S2A 2P2T W24 Z4A 1 .6 2 IN COMPRESSOR TO SHEET 2 .6 R45 20K R149 6.81K 3 2 +15 TL072

8

Z14A

1

C7

R61

8

22/25

C59 2 OUT TL072 22/25 -15 R141 20K

GND

-15

C16

100 R67 100K

+ 2 - 3

4

1

J5 XLR MALE

4

R58 20K GND -15 GND

R44 20K R66 10K

47pF

GND

GND J6 PHONO 6 C17 5 Z8B 7 TL072 GND

CHANNEL 2 OUT

J2 XLR FEM
3

2

+ -

R73 1K 9.09K

R4

R13 10K

R78 10K 13 -5V 12 D2 5817 R6 3.74K R16 10K C22 1/35 -1V R68 100K GND GND
+

+15 47pF 14 R18 TL074 10K Z6D R D10 -15 OL 9 10 R80 1K GND R46 20K GND COMPRESSOR 100456-2.SCH POWER 100456-3.SCH R142 20K
ACTION:

GND R47 20K 2 3 GND Z6C 8 R17 TL074 10K G D8 -15 +4dBu 20K R150 20K GND 47pF GND R15

1

8

Z8A

1 TL072

C55 22/25

R144 100 R146 100K

J10 PHONO GND

4
-15 5 6 Z14B 7 TL072 C61 C8 22/25

CHANNEL 2 IN
GND

GND R62 100 R138 100K

NOTES (UNLESS OTHERWISE SPECIFIED): 1. ALL RESISTORS 1/4W 1% METAL FILM 2. ALL SWITCHES SHOWN IN THEIR 'OUT' OR 'OFF' POSITION

NO CHANGE TO PART, NEW DOC# FJ 3FEB98
DRAWN BY: CHECKED BY:

SCHEM: L&R IN/OUT MC 22
3-Feb-1998 SKH 2-9-96 RGH 2-9-96 10802 47th Avenue West Mukilteo WA 98275-5098

SHEET:

H:\MC22\100456-1.SCH

1 of 3

100456

+15 R98 10K 100K +15 R50 R49 100K COMP. LINK 5 R69 6 100K -40 R113 13.3K -15 R51 100K R52 100K 6 R28 10K 3 2 7 5 R109 12.4K R90 200K +15 R105 100KB R94 200 -15 GND GND 6 5 GND R54 +15 R75 1K GND 40.2K R100 +Vc 1 R91 200 GND R106 150K 100K W20 +15 .6 R53 100K COMP. R112 RATIO 12.4K TL074 1:1 => 10:1 13 R133 14 D6 100KB 12 Z12D COMP. 4148 R134 THRESHOLD 100KB +20 9 10 Z12C 8 R116 4.42K S3A 1P2T LINK 5 W18 R120 Z7B -15 R117 2.21K GND Z5B TL074 D3 R107 4148 4.75K C19 47pF R87 33.2K GND -Vc 2 GND C42 0.1 Z10B 7 TL074

GAIN REDUCTION

-15

R102

13

10K

12

Z10D

14

R25

Y

0

R76 R93 -Vc 2 200 +15 GND 3 Z10A TL074 1 2 +20 R115 4.42K GND

R101

4

1K

40.2K

TH 2 I ref
GND -15

CON 2

-Vc 2

11

1/2 SSM 2120 V+
C11 15

RATIO R110 1:1 => 10:1 12.4K 9 R131 8 D4 100KB 10 Z10C TL074 COMP R132 4148 THRESHOLD 100KB

TL074

5.11K

D11

GND

12

14

17

R119 4.42K

+Vc 2

6

5

Z11B

7

R24

G

3

TL074 GND +15

10K

D13

R127 75

+15

OUT 2 20 REC2 Iin

4

22/16 R20 10K

R128 75 D17 Z5A 1 R26 -15 5.11K Y THRESHOLD

2

4

11

2V LOG AV2 13 16 19 18 VIN 2 +Vc 2 CFT 2
Z9B SSM2120

TL074 -15

R125 150 DOWNWARD EXPAND FIXED THRESHOLD -55dBu FIXED RATIO 2:1

13

11

GND -15 C28 1 IN R96 51.1

FROM SHEET 1
+15 R97 10K

2

4

GND

1

3

5

TL074

1/2 SSM 2120 TH 1 V+
C9 9 22/16

CON 1

+Vc 1 I ref

I ref

10

GND

-40 GND R114 13.3K

C41 0.1

R70 6 100K

Z12B

7 TL074

.6 4.42K

+Vc 1

6

11

3 100K .6 100K 6 10K 2

4

REC1

Iin

-15 R55 W22

R130 75 R56 R30 D18 Z6A W21 D5 1 R29 Y -15 TL074 5.11K EXPAND

2

4

V+

VLOG AV1 V2 IN 1 8 -Vc 1 7 6 CFT 1
Z9A SSM2120 C23 R85 0.1
+

5 R111 12.4K -Vc 1 C10 22/16 22/16
+

Z6B R118 2.21K 33.2K R83 1.5M C25 .0022 R89 200K +15 -15 GND

7 TL074

R108 .6 4148 4.75K C20 47pF R88

GND -Vc 1

11

R19 10K

2V

R126 150 -15 DOWNWARD EXPAND FIXED THRESHOLD -55dBu FIXED RATIO 2:1

13

11

22

21

C33

11

C49 0.1 GND +15

-15 GND -15 C27 R95 51.1 1/50 GND R92 200 -15 GND R104 100KB 2 3 GND

8

2 IN

FROM SHEET 1

4

H:\MC22\100456-2.SCH

3-Feb-1998

+

+

3

Z11A

1

R23

G

6

GND

TL074

10K

D14

-15

12

Z11D

14

R22

G

12

TL074

10K

D15

C24 R86 +Vc 2 33.2K R84 1.5M C26 .0022 C12 22/16 22/16
+

R123 301

9

10

Z11C

8

R21

G

24

TL074 TL072 7 W11 .6 1 OUT

10K

D16

R121 60.4K

1/50

FROM SHEET 1

R27

-15

10K

GAIN REDUCTION

+15

-15

R103

10K

3

Z12A

1

R35

Y

TL074

5.11K

0

D12

-15

5

Z13B

7

R34

G

TL074 GND +15

10K

3

D19

R129 75

+15

OUT 1 4

+

3

Z13A

1

R33

G

6

GND

TL074

10K

D20

-15

12

Z13D

14

R32

G

12

TL074

10K

D21

R124 301

9 33.2K +15 TL072 1 Z7A

10

Z13C

8

R31

G

TL074

10K

24

D22

R122 60.4K 2 OUT

FROM SHEET 1

R36 -15

-15

W19 .6

10K

ACTION:

D3 & D5 WERE 5817 R117 & R118 WERE 2.49K
DRAWN BY: CHECKED BY:

SCHEM COMPRESSOR MC 22
RGH 2-9-96 10802 47th Avenue West Mukilteo WA 98275-5098

SHEET:

2 of 3

100456

POWER SUPPLY
T1 LP-30-200 4 5 J7B P1 LINECORD J7A BLK 3 W34 2 7 GND C63 0.01 R152 7.5K 8 S4A 4004 D24 4004 1 .4 6 D26
+

S4B 2P2T

D25 4004 D23

W27 .4
+

7815
Q1A C29 2200/35 4004 C34 0.1 C31 10/16
+

+15

120V UNITS ONLY 190mA FOR 120v (150 mA FOR 230v) .4 W2 W3 .4 R151 7.5K

230V UNITS ONLY

C62 0.01

C36 0.1

R99 5.11K

H N
GRN J8A J8B WHT

C30 2200/35

C35 0.1 Q1B

C32 10/16

+

C37 0.1

GND

D27 POWER Y -15

7915
REG ASSY

DECOUPLING CAPS
+15 C52 0.1 C51 0.1 C48 0.1 C47 0.1 C46 0.1 C45 0.1 C44 0.1 C43 0.1 C40 0.1 C39 0.1 C38 0.1 -15

JUMPERS
+15 W30 .6 W26 .4 W23 .6 W15 .4 W12 .4 W9 .4 W5 .4 +15 -15 W31 .4 W29 .6 W25 .4 W16 .6 W14 .4 W13 .4 W8 .4 W6 .4 -15

W32 SHIELD

W33 W28 SHIELD .4

W10 .4

W7 .4

GND

GND

ACTION:

NO CHANGE TO PART, NEW DOC# FJ 3FEB98
DRAWN BY: CHECKED BY:

SCHEM POWER MC 22
3-Feb-1998 SKH 2-9-96 RGH 2-9-96 10802 47th Avenue West Mukilteo WA 98275-5098

SHEET:

H:\MC22\100456-3.SCH

3 of 3

100456