Symetrix 501 Schematic
D
C
B
INPUT
XLR-FEMALE
1
4
CHGND
J2
SIDECHAIN
(SH2)
654321
REVISION RECORD
LTR
F.3 03/12/96Redraw in PADS; chg 5% resistors w/ 1%.
+15V
R118
CW
3
R119
C9
82pF
R20
13K0
U1B
BA4560
3
R11
50KB
1
***
100K
TRIM
1
-15V
7
OUTPUT
GAIN
C5
47pF
R38
J1
2
3
2K10
R100
2K00
C1
.001
C2
.001
R1
43K2
R2
13K0
R4
15K0
R3
45K3
U1A
2
-
3
+
BA4560
C6
150pF
C7
1
4.7NP
100K
TRIM
R18
61.9 OHM
+15V
CW
3
R17
1
-15V
R19
825 OHM
R5
13K0
2
EC1
18
IN
S
Y
M
R9
1M
R7
5K11
-15V
VC
(SH2 & 3)
+15V
37
VCC
U2
V
E
E
OUT
G
E
N
C
D
2
6254
R6
51.1 OHM
7K50
R8
61.9 OHM
R10
2
2150A
6
5
+15V
CW
-15V
+
2
R21
10K0
***
768K
R33
10K0
C10
82pF
R22
10K0
U4A
2
-
3
+
BA4560
5
+
6
-
*** SEE NOTES ON PAGE 3 REGARDING OUTPUT
1
U4B
7
BA4560
D1
1N4148
R34
1M
TRANSFORMER OPTION (501-01)
***
C13
+
100/35
***
R30
R29
***
100.0
***
100.0
C17
.1uF
5
4
6
3
+15V
T2
121005
C14
+
100/35
R35
200K0
9
8
R36
49K9
***
+
-
U9D
LM339
F.4
F.5 Changed note on pg3 to make R29-30 20 Ohm 10/8/97
7
2
8
1
+15V
14
REVISIONS DONE OR ECO NUMBER:
Changed R102 from 130 ohms/5% to 121
ohms/1% to standardize on 1% values.
OUTPUT
J3
XLR-MALE
2
3
R31
100K0
R32
100K0
R37
2K37
D2
RED
OUTPUT
PEAK
4
CHGND
1
J4
DATE:
05/09/96
D
C
B
A
DRAWN:
RELEASED:
COMPANY:
SYMETRIX, INC.
14926 35th Avenue West
Lynnwood, WA 98037-2303 USA
B
A
S
DATED:
03/12/96
DATED:
TITLE:
501 LIMITER - COMPRESSOR
DRAWING NO:
020150
SHEET:
REV:
F.5
OF
13
A
654321
TO EQ
SIDECHAIN
D
INSERTION
FROM EQ
STEREO
INTERCONNECT
C
B
100K
TRIM
A
R67
+15V
CW
-15V
R40
100K0
R41
100K0
D9
R71
R73
10K0
+
C59
4.7NP
C19
4.7NP
7
9
U5B
7
BA4560
J5
J6
J7
8
SW2C
C20
4.7NP
U12C
R65
6K98
R66
6K98
3
R68
2
90K9
1
R69
100.0
10
8
LM3046
9
U12B
LM3046
2
-
3
+
R70
200K0
11
7
6
C27
22pF
U5A
BA4560
1N4148
1
2K10
R72
10K0
6
5
SW3A
3
1
R42
100K0
2N4401
100.0
Q1
2N4401
R39
2
Q2
R43
50KB
SIDECHAIN
(SH1)
+15V
CW
3
1
R44
2
158K0
LIMITER
THRESHOLD
R74
1M
-15V
U12A
LM3046
4
2
5
3
1
+15V
R115
100K0
CW
3
2
1
C28
.047 MY
-15V
R75
1M
R120
100K
TRIM
R77
110K0
+
+
3
+
2
R78
24K3
C29
1/35T
C30
10/35
U6A
3
+
-
1
BA4560
R45
24K3
D4
1N4148
1
D10
1N4148
R79
90K9
2
R46
1K00
U8A
BA4560
R80
1K00
COMPRESSOR
THRESHOLD
R76
110K0
1N4148
D11
1N4148
+15V
3
2
1
D3
CW
R82
50KB
R81
10K0
R84
R85
100K0
R86
3M3
R47
2M0
1M
C21
.039
MY
ATTACK
2
31
CW
R83
50KA
D12
1N4148
D13
1N4148
D14
1N4148
C31
.1 MY
+
C32
1/35T
U6B
5
+
6
BA4560
R50
14K0
D5
1N4148
R49
10K0
R87
100.0
+
C50
.47/35T
C33
3.3/25T
RELEASE
7
C22
10pF
LIMITER
IN/OUT
3
1
SW4A
R51
10K0
D6
1N4148
R52
536K
+15V
R88
10K0
+
CW
3
R89
50KA
2
1
2
Q3
2N4401
C23
.1uF
1
3
R53
200.0
SW5A
D7
1N4148
49K9
+15V
2
R90
536K
R54
R55
100K0
R57
2K00
C34
.001
+15V
10
11
R56
R92
15K0
C24
+
1M
.01
MY
U9C
13
LM339
U8B
5
+
6
BA4560
R91
20K0
D15
1N4148
COMPANY:
D8
GRN
2
3
+15V
7
MASTER SLAVE
R58
2
R94
5K62
0 OHM
6
-
5
+
R95
1K
TRIM
31
CW
0 OHM
U7A
+
BA4560
R59
2K37
SW1A
1
3
R96
50KB
1
3
1
2
CW
R97
2K10
R61
10K0
R62
1K00
R93
200.0
D16
1N4148
2
RATIO
SYMETRIX, INC.
14926 35th Avenue West
R63
U7B
BA4560
R121
1K21
7
R98
8K45
(SHOWN IN
MASTER POSITION)
R64
1K00
D17
1N4148
-15V
D30
GRN
(SH1 & 3)
+15V
R101
2K10
Q4
2N4401
D36
1N4742
-15V
SW2A
3
1
6
4
VC
2
SW2B
5
COMPRESSOR
THRESHOLD
D
C
B
A
Lynnwood, WA 98037 USA
-15V
DRAWN:
RELEASED:
B
A
S
DATED:
03/12/96
DATED:
TITLE:
501 LIMITER - COMPRESSOR
DRAWING NO:
020150
SHEET:
REV:
F.5
OF
23
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