Page 1
+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
Page 2
+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
Page 3
+15A
+20 dBm
R201
50KB
-40 dBm
-15A
THRESHOLD
C221
.039 MY
CHANNEL 3
INPUT
CHANNEL 3
SIDECHAIN
R261
30K
6
5
R219
200 50KC
+15A
R222
4M7
R283
100K0
R282
6K98
R223
1M0
R277
R260
+15A
8
2
3 14 15
4
-15A
6
5
-15A
C214
10 pF
7
J202
XLR-F
PHONEJACK
R278
R291
J201
2M0
10K
U207B
RC4560
D210
R281
8K2
R292
10K
R236
100K
1
U201A
RC4560
U202B
RC4560
+15A
-15A
2
3
7
100K
39K
R252
100K TRIM
R202
13K
1N4148
C234
LOW PASS
R220B
REAR
5
4 6
DUAL
R218
200
R224
680K
5
6
+15A
8
U202A
1
GATE
RC4560
50KB
4
DUAL
-15A
EXP
RC2
10K0
+15A
R237
2K10
R238
2K00 13K0
R243
100K
C229
470 pF
R250
300
4.7 NP
R288
3K48
R233
200K
R229
82K
R220A
FRNT
1 3
50KC
DUAL
C228
.015 MY
U201B
RC4560
2
+15A
-15A
.047 MY
7
4
R271B
6
6
5
C227
EXPAND
SW06
REAR
5
R239
R240
470 pF
C230
U203A
U203D
-15A
C205
.1
10K TRIM
43K2
2
3
N.O.
N.C
R242
15K0
2
3
C231
GATE
R241
45K3
C232
150 pF
R276
8
4
1
1
6
SW06
4
8
U207A
RC4560
3 2
U204A
LF353N
+15A
R214
3M3
47 pF
1
LOG AMP
U211D
CA3046
U209A
NE5532
1N4148
R231
10K0
+15A
2
3
-15A
1
11 10
9
D205
R232
2K2
8
4
HIGH PASS
.12 MY
U211C
CA3046
8 7
6
22 pF
U208B
LF353N
R234 R230
10K0
100
-15A
3
2
+15A
C206
7
4
8
MOTHERBOARD
(LOWER MAIN P.C.B.)
1
RC3
-15A
LF353N
C226
1
U208A
R275
47K
-15A
10K0
C235
4.7 NP
C215
.1
U211B
CA3046
5 3
U211A
CA3046
1 3
.12 MY
-15A
C218
.1
4
2
-15
1 3
C225
5
R217
301
R226
1M0
D204
1N4148
C201
22 pF
6
R269
5
39K
C219
.01 MY
____
/GATEEXPAND
+15A
R251
100K
R298
22K
12
R297
4K7
R235
2K7
R286
C224
1M0
10/35V
R221A
FRNT
2
50KC
DUAL
5
6
6
R221B
REAR
50KC
DUAL
4
RELEASE
R279
10K
1
U212D
6
RC1
22K
RC4 C257
4K7
-15
C209
4.7 NP
1
4
U211E
CA3046
1
3
-15A
C220
3.3/25T
R262
R215
301
U209B
7
NE5532
R285
6K04
R216
10K0
N.C.
2N4401
7K5
U204B
LF353N
14 15
SW06
Q203
R284
1K0
7
R203
500KA
D218
1N4148
2
1
+15A
-15A
Q202
2N4401
D217
1N4148
D209
1N4148
10/35V
22/25V
R299
1K0
4 4 8
J204P203
3 3
+15VA
-15VA
9
10
11
12
DAUGHTERBOARD
(UPPER P.C.B.)
C222
C223
D219
1N34A
J204P203
2
1
+15A
C110
47pF
R225
R207
2K2
R245
13K
R247
100K TRIM
+15A
10 pF
10K0
6
5
C252
R205
9K09
LF353N
7
U205B
R271A
2
R290
20K0
1
GATEFRNT
50KB
DUAL
3
EXPAND
R212
27K4
U206B
6
5
7
LF353N
R213
15K0
+15A
2M2
R210
10M
3
2
D201
1N4148
-15A
U205A
8
LF353N
1
4
R204
10K0
1N4148
R209R208
9K092K00
RATIO/
R228
D202
RANGE
SW202A
SW DPDT
1
2
3
SW202B
SW DPDT
6
5
SIDE-CHAIN
MONITOR
(SHOWN OUT)
J205
J205
J205
J205
J205
J205
4
D206
1N4148
D207
1N4148
R258
20K
D211
RED
D212
RED
D213
RED
D214
RED
D215
RED
D216
RED
9
8
11
10
-15VA
U216C
LM339
LM339
+15VA
-3
-6
-9
-12
-20
-40
U216D
R259
120
Q201
2N4403
14
13
E
C
1
R248
5K1
+15VA
R249
-15VA
+15V
73
V
C
C
OUT
E
V
C
E
2
E
51
R287
61.9
C213
.1
R263
1K00
R264
1K00
R265
1K00
R266
2K55
R267
6K34
R268
33K2
.01
G
N
D
6254
R253
1K00
-15VA
1
2
U215A
4
5
6
7
8
9
10
11
4
5
6
7
+15VA
-15VA
+15VA
3
1
2
3
LM339
U215B
LM339
U215C
U215D
LM339
U216A
LM339
U216B
LM339
2
C212
.1
1
14
LM339
13
2
1
-15VA
1
2
3
4
5
6
7
8
9
10
11
12
12-POS FEMALE CONN.
RC5
61.9
U213
1
IN
S
Y
M
R246
510K
C258
.01
R289
1K00
9
J204P203
10
+15VA
11
-15VA
J204P203
12
13 13
J204P203
14 14
15 15
2
3
-15VA
C233
82 pF
R244
8
4
U203B
N.O.
N.C.
11 10
U203C
13K
1
U214A
RC4560
33 pF
N.O = NORMALLY OPEN
N.C. = NORMALLY CLOSED
+15VA
C237
EXPAND
GATE
RC6
82K
5
6
3
2
SW06
8
9
SW06
6 7
-15A
+15A
R273
10K
6
5
C236
33 pF
U210B
RC4560
4
8
DOT SHOWS
CLOCK-WISE
ROTATION
R227
16K
C217
RC4560
2
3
BYPASS
SHOWN BYPASSED
U214B
7
RC4560
7
R296
10K
.1
U210A
1
C216
.1
R254
100
+15A
-15A
R211
200K
IN/
D208
1N4148
J204
P203
R255
100
8
4
LF353N
16 1
15 2
14 3
13 4
12 5
11 6
10 7
9 8
22 pF
1
U206A
2
5
87
R206
C203
11K3
C204
.01
C202
.01
P203
J204
5661
SW203A
3
1
SW203B
4
6
FAST
SW201B
4
5
6
SW201A
3
2
1
SLOW
ATTACK
78
R256
1K
OUTPUT
BALANCE
R295
10K TRIM
R257
1K
+15A +15A
1
213
SW06
54
-15A -15A
C251
.015 MY
65
OUTPUT
J203
XLR-M
U212EU203E
1
213
54
1
6
ENG.
DATEREVISIONS:REV#:
G0
DWG
REV.
SHEET 3 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
Page 4
+15A
+20 dBm
R301
50KB
-40 dBm
-15A
THRESHOLD
C321
.039 MY
CHANNEL 4
INPUT
CHANNEL 4
SIDECHAIN
R361
30K
6
5
R319
200 50KC
+15A
R322
4M7
R383
100K0
R382
6K98
R323
1M0
R377
R360
10K
+15A
8
2
3 14 15
4
-15A
6
5
-15A
C314
10 pF
7
J302
XLR-F
J301
PHONEJACK
R378
R391
2M0
U307B
RC4560
D310
R381
R392
10K
R336
100K
U301A
RC4560
8K2
+15A
-15A
1
U302B
RC4560
100K
39K
100K TRIM
R302
13K
1N4148
2
3
7
C334
4.7 NP
R352
LOW PASS
R320B
REAR
5
4 6
DUAL
R318
200
R324
680K
U301B
5
6
RC4560
+15A
8
U302A
1
GATE
RC4560
50KB
4
DUAL
-15A
EXP
RD2
10K0
+15A
R337
2K10
R338
2K00 13K0
R343
100K
C329
470 pF
R350
300
R388
3K48
R333
200K
R329
82K
R320A
FRNT
2
1 3
50KC
DUAL
C328
.015 MY
7
+15A
4
6
-15A
6
5
C327
.047 MY
EXPAND
U303A
SW06
3 2
1
N.O.
N.C
1
6
U303D
SW06
GATE
-15A
4
2
U304A
C330
R339
43K2
R340
C305
.1
10K TRIM
3
LF353N
8
+15A
R314
3M3
R376
47 pF
C331
R341
45K3
8
U307A
2
3
R342
15K0
C332
150 pF
4
1
RC4560
R371B
REAR
5
470 pF
LOG AMP
U311D
CA3046
2
3
U309A
NE5532
9
1N4148
R332
2K2
R331
10K0
+15A
8
4
-15A
1
11 10
D305
HIGH PASS
U311C
CA3046
8 7
6
22 pF
U308B
LF353N
R334 R330
10K0
100
-15A
3
2
+15A
C306
7
4
8
MOTHERBOARD
(LOWER MAIN P.C.B.)
1
RD3
-15A
LF353N
C326
.12 MY
R375
47K
5 3
1 3
1
U308A
10K0
C335
4.7 NP
C315
U311B
CA3046
U311A
CA3046
-15A
.1
4
2
1 3
C325
.12 MY
C318
R317
R326
1M0
D304
1N4148
C301
22 pF
6
R369
5
39K
C319
.01 MY
-15A
____
/GATEEXPAND
+15A
.1
R351
100K
R398
22K
12
R397
4K7
R335
2K7
R386
C324
1M0
10/35V
-15
R321A
FRNT
2
50KC
DUAL
5
301
5
6
6
R321B
REAR
50KC
DUAL
4
RELEASE
R379
10K
9
U212C
N.C.
RD1
22K
RD4 C357
4K7
-15A
C309
4.7 NP
1
4
U311E
CA3046
1
3
-15A
C320
3.3/25T
R362
R315
301
U309B
7
NE5532
R385
6K04
R316
10K0
2N4401
7K5
U304B
LF353N
11 10
SW06
Q303
R384
1K0
7
R303
500KA
1N4148
RD7
1K0
2
1
+15A
-15A
D318
R399
Q302
2N4401
D317
1N4148
D309
1N4148
10/35V
C323
22/25V
1K0
4 4
J304P303
3 3
+15VA
-15VA
J304P303
9
10
11
12
DAUGHTERBOARD
(UPPER P.C.B.)
+15A
R307
C322
D319
1N34A
R347
100K TRIM
2
1
2K2
R345
+15A
R325
+15A
2M2
R310
10M
3
2
1N4148
D301
-15A
U305A
8
LF353N
1
4
R304
10K0
1N4148
R309R308
9K092K00
RATIO/
R328
D302
10K0
6
5
C352
R305
9K09
10 pF
LF353N
7
U305B
R371A
R390
20K0
1
GATEFRNT
50KB
2
DUAL
3
EXPAND
R312
27K4
U306B
6
5
7
LF353N
R313
15K0
RANGE
SW302A
1
2
3
SW302B
6
5
SIDE-CHAIN
MONITOR
(SHOWN OUT)
J305
J305
J305
J305
J305
J305
4
D306
1N4148
D307
1N4148
R358
20K
D311
RED
D312
RED
D313
RED
D314
RED
D315
RED
D316
RED
9
8
11
10
-15VA
+15VA
-3
-6
-9
-12
-20
-40
U316C
LM339
U316D
LM339
Q301
2N4403
R359
120
14
13
E
C
1
R348
5K1
+15VA
R349
51
-15VA
+15VA
73
V
C
C
OUT
E
V
C
E
2
E
R387
61.9
C313
.1
R363
1K00
R364
1K00
R365
1K00
R366
2K55
R367
6K34
R368
33K2
.01
8
G
N
D
6254
R353
1K00
-15VA
1
2
U315A
4
5
6
7
8
9
10
11
4
5
6
7
+15VA
-15VA
+15VA
3
1
2
3
2
LM339
C312
.1
U315B
1
LM339
U315C
14
LM339
U315D
13
LM339
U316A
2
LM339
U316B
1
LM339
-15VA
12-POS FEMALE CONN.
1
2
3
4
5
6
7
8
9
10
11
12
RD5
61.9
U313
13K
1
IN
S
Y
M
R346
510K
C358
.01
R389
1K00
9
J304P303
10
+15VA
11
-15VA
J304P303
12
13 13
J304P303
14 14
15 15
-15VA
C333
82 pF
R344
13K
8
2
3
4
11 10
U303C
1
U314A
RC4560
U303B
N.O.
N.C.
+15VA
C337
33 pF
EXPAND
GATE
RD6
82K
5
6
3
2
SW06
8
9
SW06
-15A
+15A
6 7
R373
10K
6
5
C336
33 pF
U310B
RC4560
4
RC4560
8
2
3
R327
16K
BYPASS
SHOWN BYPASSED
U314B
7
RC4560
R354
7
100
R396
10K
C317
.1
U310A
1
C316
.1
N.O = NORMALLY OPEN
N.C. = NORMALLY CLOSED
+15A
8
4
-15A
R311
200K
IN/
D308
1N4148
J304
P303
R355
100
DOT SHOWS
CLOCK-WISE
ROTATION
LF353N
16 1
15 2
14 3
13 4
12 5
11 6
10 7
9 8
U306A
2
5
C303
22 pF
1
87
C304
.01
C302
.01
SW303A
P303
J304
3
1
SW303B
4
6
5
2
ATTACK
78
R306
11K3
.015 MY
5661
FAST
SW301B
4
6
SW301A
3
1
SLOW
OUTPUT
R356
1K
OUTPUT
BALANCE
R395
10K TRIM
R357
1K
C351
+15A
1
-15A
1
6
65
564E Quad Expander/
TITLE
MANF.
PURCH.
J303
XLR-M
213
54
ENG.
DATEREVISIONS:REV#:
U303E
G0
DWG
REV.
SHEET 4 OF 5
Gate Schematic
021760/1-SCH
6-11-93
NO.
DWG
DATE
James Husted
DATE
BY
DRAWN
PRINTED
Page 5
110V = 1/2 AMP SLO-BLO
220V = 1/4 AMP SLO-BLO
J20
G0
DWG
REV.
SHEET 5 OF 5
TOROIDAL
POWER
TRANSFORMER
1
6
2
5
120040
SW4
56
T1
8
7
7
11
8
6
10
1
2
12
J1P1
1
2
3
4 4 5 5
J21F1
2 1 2 1
JP1
0 OHM
1
2
3
4
3
C40
.01
P1J1
8
7
6
2
R93
10 OHM
BR1
4
1
3
DB104
C41
1000/35V
C42
1000/35V
U20
78M15
1
VI
G
N
D
2
VI
U21
79M15
3
VO
2
1
G
N
D
VO
C43
4.7/50V
C44
4.7/50V
3
.1 MONO
.1 MONO
Monolithic Ceramic
C60
C59
C259
C45
.01
C46
.01
-15A+15
C55
100/35V
C54
2.2/25T
JP3
0 Ohms
0 OHMS
JP2
+15
-15
ENG.
MANF.
Gate Schematic
564E Quad Expander/
021760/1-SCH
6-11-93
TITLE
NO.
DWG
DATE
James Husted
DATE
PURCH.
BY
DRAWN
PRINTED
DETACHABLE
POWER CORD
SW5A
2
P2J100
1 4
2
3
SW5B
5 3
OPTIONAL A.C.
ON/OFF SWITCH
(REMOVE JP1)
3
1
6
110V <--> 220V
VOLTAGE
SELECT SWITCH
.1 MONO
U22
78M15
1
VI
2
U23
79M15
VO
G
N
D
2
1
G
N
D
VI
(WHITE LED HEADER)
VO
C47
4.7/50V
C48
4.7/50V
3
2
J8
1
R94
3K3
C49
.01
C50
.01
100/35V
D30
RED
C253
POWER
C354
22/50V
C355
2.2/25T
JP4
0 OHMS
0 OHMS
JP5
+15A
-15A
DATEREVISIONS:REV#:
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