Symetrix SX208 Schematic
C43
R2
+15
R69
LEFT
INPUT
J1
2K10
R4
C1
.001
R6
43K2
R3
2
3
-15
8
U6A
RC4560
4
45K3
C28
.1
47 pF
1
C29
.1
R108
4K99
R5
510
-20 dB +20 dB
+15
3.3/25T
2
3
8
4
-15
C44
22 pF
R71A
1 3
50KA
C26
U1A
1
RC4560
C27
3.3/25T
LEFTCLIP
2
3
E
C
1
U10
IN
2150A
V
S
E
Y
E
M
5
4
C10
4.7 NP
R31
13K
1
+15
+15
7
V
C
C
OUT
E
C
2
2
8
G
N
D
6
LEFTOUT
R51
61.9
1
R47
300K
R33
300K
IN
-15
-15
2K00R87
S
Y
M
R36
51
R35
5K1
3
E
C
1
U11
2150A
V
E
E
5
4
R50
51
R49
5K1
R83
61.9
+15
7
V
C
C
OUT
E
C
2
2
R84
61.9
8
G
N
D
6
Title
RIGHTOUT
14926 35TH AVE W
LYNNWOOD WA, 98037
SX-208 SCHEMATIC
REVDocument NumberSize
APRIL 13, 1994
208_1B3.SCH
1
B3B
3ofSheetDate:
2K00
2K10
RIGHT
INPUT
J2
R45
R42
2K00
C2
.001
C12
.001
C13
.001
13K0
43K2
R44
R41
13K0
6
5
R1
15K0
R40
15K0
47 pFC47
45K3R97
U6B
RC4560
C42
150 pF
R39
7
4K99
C46
150 pF
INPUT GAIN
C45
510R43
-20 dB +20 dB
6
5
RC4560
22 pF
R71B
4 6
50KA
U1B
7
INPUT GAIN
LOGAMP IN
R34
100K TRIM
R32
61.9
R86
2K00
RIGHTCLIP
5
R46
13K
C14
4.7 NP
R53
13K0
BYPASS
R54
13K0
-15
+15
R48
100K TRIM
-15
100K TRIM
R25
1K00
LOGAMP IN
R14
5
6
1N4148
R24
30K1
D7
-15
+15
-15
U4B
RC4560
7
R27
137K
R26
1M0
R9
82K
1N4148
+15
-15
T.H. TRIM
R11
200K
D3
R22
10K
CW
R28
50K TRIM
11 10
C3
22 pF
6
5
R10
100
-15
RC4560
R19
3M3
Q1D
9
U3B
7
D5
1N4148
D6
1N4148
R23
2K0
R38
100K
1N4148
1/35T
Q1C
D1
R8
2K2
10K0R109
+15
C7
6
C6
8 7
2
3
.1 MY
Q1A
1 3
2
R7
10K0
8
RC4560
4
R20
1M0
2
31
R13
110K
10/35V
1
U3A
Q1B
5 3
4
FAST-SLOW
IN=FAST
SW1B
4
6
4.7/50V
C300
SW1A
+15
C11
1/35T
FAST
5
SLOW
R89
510K
1N4148
15K0
C4
D2
R17
-15
12
C5
1/35T
3
2
-15
-15
1
4
1
3
4
8
R12
1M0
Q1E
20K0
-15
U4A
RC4560
1
R16
+15
C30
.1
C31
.1
50KB
R15
RATIO
R112
390K
BYPASS
SW3B
6
4
SW3C
7
9
SW3A
3
1
5
4PDT
8
4PDT
2
BYPASS
shown
bypassed
SW3D
10
12
C200
22 pF
3
2
C201
7
4PDT
11
C32
.1
-15
+15
RC4560
4
RC4560
8
U9B
U9A
C33
1
357KR85
10 pF
.1
+15
D23
1N4148
ABOVE
3M3R79
D16
C21
.01
D18
YEL
D17
GRN
BELOW
D20
1N4148
D26
1N4148
C22
.01
R82
59K0
R100
33K
10KR18
6
5
R37
10K
LEDs
+15
+20 dB
R110
50KB
-20 dB
-15
1N4003
R98
10
F1
.75 AMP
D21
200KR99
.056 MY
D22
1N4003
C25
.01
C20
1
C23
1000/35V
C24
1000/35V
-15
U13
7815
VI
2
VI
U14
7915
2
3
R80
9K09
6
5
R81
71K5
+15
8
U7A
1
RC4560
4
-15
THRESHOLD
U7B
7
RC4560
R78
3M3
-15
3
VO
G
N
D
2
1
G
N
D
VO
3
1 4
1 4
YEL
1 4
D27
1N4148
R101
3K0
J8
3 2
3K0R77
J7
3 2
R76
3K0
J6
3 2
+15
C48
10/35V
C49
10/35V
-15
J5
Title
Size
B
Date:
14926 35TH AVE W
LYNNWOOD WA 98037
SX-208 SCHEMATIC
Document Number
208_1B3.SCH
Sheet
REV
B3
3
2 APRIL 13, 1994
of
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