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C44
C43 47 pF
LEFTCLIP
22 pF
R2 45K3
R5 510 R71A 2 +15
1 3
C28 50KA
+15 -20 dB +20 dB
.1 3 7
C26
+15
E V
C C
R69 R6 8 3.3/25T R31 1 C
2 U6A 8 U10
U1A 13K
LEFT 1 2 1 2150A 8
2K10 43K2 IN OUT LEFTOUT
INPUT 3 1 C10
J1 R108 3 S V E G
C1 RC4560 4.7 NP
4 4K99 Y E C N
.001 RC4560 M E 2 D
4 C27
4 5 2 6
-15 C29 3.3/25T
R4 R3 .1 -15 +15
R33
2K00 13K0 INPUT GAIN 300K R36
51
R34
C2 R1 C42
.001 150 pF 100K TRIM
15K0
R32
61.9 -15 R83
R35
R86 61.9
5K1
2K00
-15
C45 22 pF
C47 47 pF RIGHTCLIP
R87 2K00
R97 45K3 R71B
R43 510 5 +15
4 6 R51
50KA 61.9
2K10 43K2 -20 dB +20 dB R46
U6B 3 7
6 R39 13K
RIGHT 7 6 U1B
R45 R44 E V
INPUT 5 7 C14 C C
J2 C12 RC4560 4K99 5 1 U11 C
4.7 NP
.001 RC4560 2150A
1 8
IN OUT RIGHTOUT
S V E G
Y E C N
M E 2 D
R42 R41
C46
INPUT GAIN
2K00 13K0 R53 R54 4 5 2 6
R40 13K0 13K0
C13 +15
15K0 150 pF
.001
R47
300K
LOGAMP IN
R48 R50
100K TRIM 51
R49 R84
BYPASS 14926 35TH AVE W
5K1 61.9 LYNNWOOD WA, 98037
-15
Title
-15 SX-208 SCHEMATIC
Size Document Number REV
B 208_1B3.SCH B3
Date: APRIL 13, 1994 Sheet 1 of 3
+15
Q1C D23 R101
7 8
LOGAMP IN
Q1D 1N4148 3K0
11 10 6 ABOVE
R11 J8
R82 D18
200K D1
9 +15 2 3
BYPASS
C3 1N4148 59K0
22 pF YEL
8 1 4
2 U7A
R8 1
+15 6 2K2 Q1A R100 R99 200K 3
7 1 3 +15 RC4560 R77 3K0
R9 5 +20 dB 4
U3B C5 33K
82K
R14 RC4560 2 R13
100K TRIM R110 -15
110K 1/35T R79 3M3 J7
R18 10K 50KB
SW3B 2 3
R10 6 D17
R80
100 C4 R12 5 U9B GRN
-15 +15 R7 4 6 -20 dB 9K09 THRESHOLD 1 4
10/35V 1M0
10K0 7
5 6 U7B
SW3C -15 7
-15 7 4PDT 5
8 -15 8 RC4560 C20 R76
1 RC4560
2 Q1B 4 9
1 5 3 12 Q1E
R109 10K0 3 .056 MY 3K0
U3A 1 R78 3M3
-15 SW3A
4 RC4560 4 3 YEL J6
R81 D16
-15 3 4PDT 2 3
2 71K5
1
1 4
U4B BYPASS R37
5 RC4560 shown 10K -15 BELOW
7 bypassed
6
D3 D20
-15
SW3D 1N4148
1N4148 4PDT
D5 10
R22 1N4148 R20 11
10K LEDs D21
1M0 12
FAST-SLOW 1N4003
U13
7815
D6 -15
1N4148 IN=FAST C31
1
VI
G
VO
3
+15
N
C23 D C21 C48
D7 SW1B FAST .1 C32
2 .01 D26 10/35V
1N4148 R23 4 .1 1000/35V
5 4 U4A 1N4148
R24 +15 2K0 6 3 RC4560 -15
SLOW 1 C200 C24
30K1 2 1000/35V 1 C22 C49
R98
R27 CW 22 pF .01 10/35V
C6 .1 MY 4.7/50V D27
137K 8 10 G
20K0 4 C25 N 1N4148
R28 U9A 2 D 3
R38 R16 3 .01 VI VO -15
R25 50K TRIM C300 1
100K 1N4148 U14
1K00 R26 50KB 2 7915
1M0 D2 R15 R112 D22
2 SW1A RC4560
-15 R89 8 1N4003
T.H. TRIM 390K R85 357K
R19 +15 +15 J5
-15 C7
3M3 510K
1 3 R17
RATIO C201 10 pF
F1
1/35T C11
15K0 C30
.1 C33
1/35T .75 AMP
+15 .1
14926 35TH AVE W
LYNNWOOD WA 98037
Title
SX-208 SCHEMATIC
Size Document Number REV
B 208_1B3.SCH B3
Date: APRIL 13, 1994 Sheet 2 of 3
R57 C9
C8 100/35V
300 +15
82 pF
J3 +15
R30 C41 82 pF
13K R29 C34
+15 100K R93
R56 R55 10K0
C37 45K3 .1
R75 J10
10K0 3 2
LEFTOUT R58
.1 3 U12A
6
U2B
300 C16 LEFT 5 LM339 3K3 D11
8 7 2 4 1
2 5 OUTPUT LEDs
4
1 RC4560 100/35V CONN LED 1 RED
-15
3
4
U2A
RC4560
R59 R94
1
2
R74 J11D
-20
100K 7K32
D8 C35 .1 25 8
7 U12B 3K3 D12
-15 C36 1N4148 1 26 7
.1 6
D24
+15
LM339 RED -12
R95
1N4148 R70 3K65 R73 J11C
RC4560 27 6
150 8
2 U8A J9 9 U12C 3K3 D13
1 4 1 D10 14 28 5
C19 3 RED 8
LEFTCLIP
2.2/25T
4 3 2
LM339 RED
-8
R92
-15 R68 R72 J11B
RIGHTCLIP 2K67 29 4
C15 D25 R65
100K 1M0 R67 11 U12D 3K3 D14
82 pF R106
R66 13 30 3
R52
1N4148 100K
3K3 CLIP 10
13K D9
+15
56K LM339 RED -5
R91
R96 J11A
+15 1N4148 2K67 31 2
+15
5 U8B 6K2 D15
R62 C17 7 32 1
300 100/35V 6
RIGHTOUT
8 J4
R300 RC4560 RED -2
2 C39 C40 82 pF 1M0 R90
1 R60 2K00
3 .1 100K
U5A
4 RC4560 R114 R61 10K0
C18
10K0
U5B
R63 100/35V RIGHT
C38 6 300
-15 .1 7 R64 OUTPUT 14926 35TH AVE W
5
100K LYNNWOOD WA, 98037
RC4560
Title
SX-208 SCHEMATIC
Size Document Number REV
B 208_1B3.SCH B3
Date: APRIL 13, 1994 Sheet 3 of 3