Symetrix 564E Schematic
+15
+20 dBm
R1
50KB
-40 dBm
-15
THRESHOLD
C21
.039 MY
CHANNEL 1
INPUT
CHANNEL 1
SIDECHAIN
R61
30K
6
5
200
R22
4M7
R23
1M0
2
3
-15
R82
6K98
R77
2M0
-15
J2
XLR-F
J1
PHONEJACK
C14
10 pF
R60
10K
U7B
7
RC4560
LOW PASS
R20B
REAR
4 6
50KC
+15
D9
D19
1N34A
R47
100K TRIM
2
1
+15
R25
+15
2M2
R7
R10
10M
3
2
D1
1N4148
R8
U5A
8
LF353N
1
4
R4
-15
10K0
D2
1N4148
R9
9K092K00
R28
10K0
RATIO/
RANGE
C100
47pF
RA5
61.9
U13
R45
1
R46
510K
IN
S
Y
M
C58
.01
R89
1K00
9 9
10
+15V
11 11
-15V
12
13
14 14
13K
J4P3
J4P3
J4P3
+15V
73
51
-15V
V
C
C
OUT
G
E
V
N
C
E
D
2
E
6254
R49
R87
61.9
-15V
C13
.1
4
5
R63
1K00
+15V
(953)
6
7
R64
1K00
(931)
8
9
R65
1K00
(976)
10
11
-15V
R66
2K55
4
5
R67
6K34
+15V
6
7
R68
33K2
E
C
1
R48
5K1
+15V
6
5
C57
.01
8
R53
1K00
1
2
U15A
2
LM339
3
C12
.1
U15B
1
LM339
U15C
14
LM339
U15D
13
LM339
1
2
U16A
2
LM339
3
U16B
1
LM339
-15V
12-POS FEMALE CONN
10 pF
9K09
C52
U16C
LM339
U16D
LM339
+15V
-3
-6
-9
-12
-20
-40
6
5
14
R59
120
Q1
2N4403
R12
27K4
R13
15K0
U6B
LF353N
2
3
-15V
7
C33
82 pF
R44
13K
8
4
R5
7
U5B
LF353N
R71A
R90
20K0
1
GATEFRNT
50KB
2
DUAL
3
EXPAND
SW2A
1
2
3
SW2B
6
5
4
SIDE-CHAIN
MONITOR
(SHOWN OUT)
9
8
11
10
D6
1N4148
D7
1N4148
R58
20K
-15V
1
D11
RED
J5
2
3
D12
RED
J5
4
5
D13
RED
J5
6
7
D14
RED
J5
8
9
D15
RED
J5
10
11
D16
RED
J5
12
EXPAND
U3B
SW06
6 7
8
N.O.
N.C.
11 10
U3C
+15V
1
U14A
RC4560
C37
33 pF
CHANNEL 1 SHOWN ONLY
PIN NUMBERS IN PARENTHESES
ARE FOR CHANNELS 2 & 4.
FOR CHANNELS 2, 3, & 4
ADD 100, 200, OR 300
RESPECTFULY TO THESE
REFERENCE DESIGNATORS.
N.O = NORMALLY OPEN
N.C. = NORMALLY CLOSED
DOT SHOWS
CLOCK-WISE
ROTATION
GATE
RA6
82K
5
6
3
2
R73
9
SW06
C36
33 pF
RC4560
-15
4
8
+15
10K
R27
16K
BYPASS
SHOWN BYPASSED
U14B
6
5
RC4560
U10B
7
C17
.1
1
U10A
RC4560
C16
.1
C3
22 pF
+15
8
2
3
R11
200K
1
U6A
LF353N
4
-15
2
IN/
5
D8
7
1N4148
P3
J4
87
R54
100
R96
16 1
15 2
14 3
13 4
12 5
11 6
10 7
9 8
10K
R55
100
U12 IS USED ON CHANNELS 1 & 2.
U212 IS USED ON CHANNELS 3 & 4.
EXCEPT WHERE NOTED, CHANNELS
1 & 2 USE +15 & -15 SUPPLIES
CHANNELS 3 & 4 USE +15A AND
-15A POWER SUPPLIES.
RAx = CHANNEL 1 COMPONENTS
RBx = CHANNEL 2 COMPONENTS
RCx = CHANNEL 3 COMPONENTS
RDx = CHANNEL 4 COMPONENTS
C2
.01
SW3A
+15
1
-15
C4
.01
11K3
3
1
SW3B
4
6
5
213
ATTACK
78
213
SW06
54
R6
.015 MY
P3
J4
5661
FAST
SW1B
4
6
SW1A
3
1
SLOW
OUTPUT
R56
1K
OUTPUT
R95
BALANCE
10K TRIM
R57
1K
+15
U12EU3E
1
213
54
-15
G0
C51
1
6
65
TITLE
DWG
REV.
SHEET 1 OF 5
Gate Schematics
564E Quad Expander/
021760/1-SCH
6/11/93
NO.
DWG
DATE
James Husted
J3
XLR-M
ENG.
DATEREVISIONS:REV#:
MANF.
DATE
PURCH.
BY
DRAWN
PRINTED
R26
+15
R83
100K0
+15
8
4
6
5
R78
R91
D10
R92
10K
100K
R36
1
U1A
RC4560
R81
8K2
U2B
4560
100K
39K
R2
13K
1N4148
2
3
7
R24
680K
5
6
RC4560
+15 -15
8
U2A
1
GATE
4560
50KB
4
DUAL
-15
EXP
RA2
10K0
+15
R37
2K10
R38
2K00
R43
100K
C29
470 pF
R50
300
U1B
7
+15
4
R71B
REAR
5
6
-15
470 pF
C30
43K2
13K0
R39
C5
.1
10K TRIM
R40
EXPAND
SW06
U3A
1
N.O.
N.C
1
6
14 15
SW06
U3D
GATE
4
U4A
2
3
LF353N
8
R76
C31
R41
45K3
8
U7A
2
3
RC4560
4
R42
15K0
C32
3 2
+15
R14
3M3
1
1
47 pF
150 pF
RA3
10K0
R75
47K
R69
39K
C19
.01 MY
-15
R79
10K
14 15
(11)(10)
1
SW06
U12D
R51
100K
N.C.
6
(9)
4.7 NP
____
/GATEEXPAND
-15
+15
C18
.1
C35
4.7 NP
C15
.1
-15
LOG AMP
C34
4.7 NP
+15
-15
5
R18R19
200
R88
3K48
R33
200K
R52
R29
82K
100K TRIM
R20A
FRNT
2
1 3
50KC
DUALDUAL
C28
.015 MY
U11C
CA3046
8 7
U8B
6
5
R34
100
C27
-15
.047 MY .12 MY.12 MY
3
2
+15
U11D
CA3046
11 10
9
6
C6
22 pF
LF353N
10K0
7
R30
D5
1N4148
U11B
CA3046
R32
5 3
2K2
R31
10K0
+15
8
2
3
LF353N
4
-15
1 3
1
U8A
U11A
CA3046
4
2
HIGH PASS
C25C26
4
U9A
1
NE5532
8
MOTHERBOARD
R86
1M0
-15
2
1 3
50KC
DUAL
6
5
4
R17
301
R21A
FRNT
R21B
REAR
50KC
DUAL
R98
22K
1
4
12
U11E
CA3046
1
3
R97
4K7
-15
R35
C20
2K7
3.3/25T
C24
10/35V
5
6
R85
6K04
R16
10K0
DAUGHTERBOARD
(LOWER MAIN P.C.B.)
1M0
D4
1N4148
C1
22 pF
6
5
7
U4B
LF353N
RELEASE
500KA 2K2
RD7
CH 4
1K0
ONLY
(OTHER CHAN
HAVE TRACE
INSTEAD)
RA1
22K
-15A
CH.1 & CH.2 TO -15A
CH.3 & CH.4 TO -15
C9
R15
301
U9B
NE5532
Q3
RA4
2N4401
4K7
R62
7K5
7
(UPPER P.C.B.)
R3
R84
1K0
1N4148
2
1
+15
-15
D18
R99
1K0
J4P3
Q2
2N4401
D17
1N4148
1N4148
C22
10/35V
C23
22/25V
4 4
3 3
+15V
-15V
J4P3
10
12
13
15 15
+15
+20 dBm
R101
50KB
-40 dBm
-15
THRESHOLD
C121
.039 MY
CHANNEL 2
INPUT
CHANNEL 2
SIDECHAIN
R161
30K
6
5
R119
200 50KC
R122
4M7
R123
1M0
2
3
-15
R182
6K98
R177
2M0
-15
J102
XLR-F
J101
PHONEJACK
C114
10 pF
R160
10K
U107B
7
RC4560
R120B
4 6
+15
+15
6
5
REAR
5
DUAL
R183
100K0
8
1
U101A
RC4560
4
D110
R181
8K2
R192
10K
U102B
RC4560
R178
100K
39K
R191
R136
100K
+15
100K TRIM
-15
LOW PASS
2
3
7
R152
R118
200
R102
13K
5
6
1N4148
+15 -15
8
U102A
1
RC4560
4
-15
+15
R137
2K10
R138
2K00 13K0
R143
100K
C129
470 pF
R150
300
C134
4.7 NP
R120A
FRNT
1 3
.015 MY
10K0
R188
3K48
RB2
R129
82K
50KC
DUAL
R124
680K
RC4560
GATE
50KB
DUAL
EXP
R133
200K
C128
U101B
2
+15
-15
.047 MY
EXPAND
U103A
1
N.O.
N.C
1
6
14 15
7
U103D
GATE
R139
43K2
R140
C105
.1
10K TRIM
2
3
R176
C131
R141
45K3
8
U107A
2
3
RC4560
4
R142
15K0
C132
150 pF
4
6
R171B
REAR
5
470 pF
C130
LOG AMP
U111D
CA3046
U111C
CA3046
8 7
6
C106
22 pF
U108B
6
5
LF353N
R134 R130
100
-15
C127
3
2
+15
10K0
7
4
8
U109A
NE5532
2
3
1
MOTHERBOARD
(LOWER MAIN P.C.B.)
SW06
3 2
SW06
4
U104A
1
LF353N
8
+15
R114
3M3
RB3
10K0
47 pF
1
-15
11 10
9
D105
1N4148
R132
2K2
R131
10K0
+15
8
1
U108A
LF353N
4
-15
HIGH PASS
C126
.12 MY
R175
47K
C135
4.7 NP
C115
.1
U111B
CA3046
5 3
U111A
CA3046
1 3
.12 MY
-15
-15
C118
.1
4
2
-15
1 3
C125
5
R117
301
R126
1M0
D104
1N4148
C101
22 pF
6
R169
5
39K
C119
.01 MY
____
/GATEEXPAND
+15
R151
100K
R198
22K
12
R197
4K7
R135
2K7
R186
C124
1M0
10/35V
R121A
FRNT
2
50KC
DUAL
5
6
6
R121B
REAR
50KC
DUAL
4
RELEASE
R179
10K
9
U12C
N.C.
RB1
22K
RB4 C157
4K7
-15A
C109
4.7 NP
1
4
U111E
CA3046
1
3
-15
C120
3.3/25T
R162
R115
301
U109B
7
NE5532
R185
6K04
R116
10K0
7
U104B
LF353N
R103
500KA
11 10
SW06
Q103
2N4401
4 4
P103 J104
3 3
7K5
R184
1K0
D118
1N4148
2 2
P103 J104
1
+15
-15
Q102
2N4401
D117
1N4148
D109
1N4148
10/35V
22/25V
R199
1K0
+15V
-15V
9
P103 J104
10
11
P103 J104
12
13
14 14
15 15
C122
C123
DAUGHTERBOARD
(UPPER P.C.B.)
+15
R107
D119
1N34A
R147
100K TRIM
1
2K2
R145
+15
R125
+15
2M2
R110
10M
3
2
D101
1N4148
8
4
-15
U105A
LF353N
1
R104
10K0
D102
1N4148
R109R108
9K092K00
RATIO/
R128
10K0
10 pF
C152
R112
27K4
U106B
6
5
7
LF353N
R113
15K0
R171A
2
R190
1
3
20K0
GATEFRNT
50KB
DUAL
EXPAND
R105
9K09
6
5
LF353N
7
U105B
RANGE
SW102A
1
2
3
SW102B
6
5
SIDE-CHAIN
MONITOR
(SHOWN OUT)
J105
J105
J105
J105
J105
J105
4
D106
1N4148
D107
1N4148
R158
20K
D111
RED
D112
RED
D113
RED
D114
RED
D115
RED
D116
RED
U116C
9
8
11
10
-15V
+15V
LM339
U116D
LM339
R159
Q101
2N4403
14
120
-3
-6
-9
-12
-20
-40
E
C
1
R148
5K1
R149
+15V
-15V
+15V
73
V
C
C
OUT
E
V
C
E
2
E
51
R187
61.9
C113
.1
R163
1K00
R164
1K00
R165
1K00
R166
2K55
R167
6K34
R168
33K2
.01
8
G
N
D
6254
R153
1K00
-15V
1
2
U115A
4
5
6
7
8
9
10
11
4
5
6
7
+15V
-15V
+15V
3
1
2
3
2
LM339
C112
.1
U115B
1
LM339
U115C
14
LM339
U115D
13
LM339
U116A
2
LM339
U116B
1
LM339
-15V
12-POS FEMALE CONN.
1
2
3
4
5
6
7
8
9
10
11
12
RB5
61.9
U113
13K
1
IN
S
Y
M
R146
510K
C158
.01
R189
1K00
9
10
+15V
11
-15V
12
13
J104P103
2
3
-15V
C133
82 pF
R144
13K
8
4
11 10
U103C
1
U114A
RC4560
+15
1
-15
U103B
N.O.
N.C.
+15V
C137
33 pF
213
54
EXPAND
GATE
RB6
82K
5
6
3
2
U103E
SW06
8
9
SW06
6 7
R173
10K
C136
33 pF
-15
4
8
+15
R127
16K
SHOWN BYPASSED
U114B
6
5
RC4560
U110B
7
RC4560
C117
U110A
1
RC4560
C116
.1
2
3
R111
200K
IN/
BYPASS
D108
7
1N4148
R154
100
R196
10K
.1
+15
8
1
U106A
LF353N
4
-15
2
5
SW103B
J104
P103
16 1
15 2
14 3
13 4
12 5
11 6
10 7
9 8
R155
100
N.O = NORMALLY OPEN
N.C. = NORMALLY CLOSED
C103
22 pF
C104
.01
C102
.01
SW103A
87
R106
P103
J104
3
1
4
6
5
213
ATTACK
78
DOT SHOWS
CLOCK-WISE
ROTATION
11K3
.015 MY
566
FAST
SW101B
4
6
SW101A
3
1
SLOW
OUTPUT
R156
1K
OUTPUT
BALANCE
R195
10K TRIM
R157
1K
C151
J103
XLR-M
1
165
6
ENG.
DATEREVISIONS:REV#:
G0
DWG
REV.
SHEET 2 OF 5
Gate Schematic
564E Quad Expander/
021760/1-SCH
6-11-93
TITLE
NO.
DWG
DATE
James Husted
MANF.
DATE
PURCH.
BY
DRAWN
PRINTED
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