YORKVILLE SOUND LTD
PCB #:
DESIGN BY:
SCH ISSUE:
PCB VER:
OF
DWG #:
FOR MODEL(S):
TITLE:
CAD FILE NAME:
C:\PCAD\EXE\
DATE:
DRAWN BY:
VERSION_2.0
00
00
PFI
PFI_&_GA
2.40
_
_
AP1212_AP1216_AP508_AP512_AP516
OCT\18\93
1200_SERIES_MASTER
M1055
M1055
1/2
33078
U1
2
3
1
1/2
33078
U1
6
5
7
1/2
33078
U2
2
3
1
1/2
33078
U2
6
5
7
1/2
33078
U3
2
3
1
1/2
33078
U3
6
5
7
1/2
NE5532
U4
2
3
1
1/2
NE5532
U4
6
5
7
1/2
TLO72
U5
2
3
1
1/2
TLO72
U5
6
5
7
1/2
TLO72
U11
2
3
1
1/2
TLO72
U7
2
3
1
1/2
TLO72
U7
6
5
7
1/2
TLO72
U9
6
5
7
1/2
TLO72
U9
2
3
1
1/2
TLO72
U8
6
5
7
1/2
TLO72
U8
2
3
1
1/2
TLO72
U10
6
5
7
1/2
TLO72
U10
2
3
1
1/2
TLO72
U11
6
5
7
1/2
TLO72
U6
2
3
1
1/2
TLO72
U6
6
5
7
MON_PRE
20A
50K
P1
MON_POST
20A
50K
P2
L_SUB
20A
50K
P3
R_SUB
20A
50K
P4
MAIN
20A
50K
P5
2K
R1
2K
R2
10K
R3
10K
R4
100K
R5
1K
R6
10K
R7
10K
R8
47K
R9
33K
R10
33K
R11
47K
R12
33K
R13
10K0
R14
14K0
R15
14K0
R16
10K0
R17
10K0
R18
14K0
R19
14K0
R20
10K0
R21
33K
R22
18K
R23
1K
R24
1K
R25
1K
R26
18K
R27
47K
R28
10K
R29
10K
R30
10K
R31
1K
R32
2K
R33
2K
R34
10K
R35
10K
R36
16v 470p
C25
4M7
R38
47K
R39
47K
R40
47K
R41
47K
R42
180K
R43
33K
R44
180K
R45
33K
R46
10K0
R47
14K0
R48
14K0
R49
10K0
R50
10K0
R51
14K0
R52
14K0
R53
10K0
R54
14K0
R55
10K0
R56
10K0
R57
14K0
R58
14K0
R59
10K0
R60
10K0
R61
14K0
R62
10K0
R63
14K0
R64
14K0
R65
10K0
R66
100R
R67
100R
R68
10K
R69
7K5
R70
10K
R71
10K
R72
4M7
R73
2K
R74
180K
R75
4M7
R76
2K
R77
4M7
R78
180K
R79
100R
R80
100R
R81
16v 470p
C24
7K5
R83
10K
R84
47R
R85
300R
R86
470R
R87
470R
R88
470R
R89
47K
R90
33K
R91
470R
R92
24K
R234
33K
R94
47K
R95
18K
R96
10K
R97
33K
R98
33K
R99
33K
R100
33K
R101
4K7
R102
4K7
R103
1K
R104
1K
R105
10K0
R106
33K
R107
1K
R108
1K
R109
10K0
R110
33K
R111
10K
R112
10K
R113
10K
R114
10K
R115
10K
R116
10K
R117
10K
R118
10K
R121
10K
R122
10K
R123
10K
R124 10K
R125
10K
R126
10K
R127
220R
R128
1M
R129
1M
R130
10K
R131
4K7
R132
33K
R133
18K
R134
33K
R135
330R
R136
330R
R137
330R
R138
1M
R139
330R
R140
330R
R141
330R
R142
33K
R143
1M
R144
2K
R145
2K
R146
2K
R147
PROTECT
RED
LD1
CW
INT_FX_SEND
50K
1B
P6
CW
EXT_FX_SEND
50K
1B
P7
10K
R148
1K
R149
1K
R150
33K
R151
150R
R152
10K
R153
4K7
R154
4K7
R155
220R
R156
220R
R157
33K
R158
220R
R159
33K
R160
220R
R161
220R
R162
10K
R163
10K
R164
1K
R165
1K
R166
2K
R167
220R
R168
2K
R169
4K7
R170
4K7
R171
470K
R172
10K0
R173
10K
R174
1K8
R175
270R
R176
220R
R177
220R
R178
270R
R179
1K8
R180
10K
R181
10K0
R182
470K
R183
10K
R184
4K7
R185
33K
R186
2K
R187
2K
R188
2K
R189
OUT
IN
S1
1
2
3
OUT
IN
GEQ_ASSIGN
S1
4
5
6
OUT
IN
PHANTOM
S6
1
2
3
OUT
IN
CURVE_SELECT
S4
1
2
3
OUT
IN
PROC_ON/OFF
S5
1
2
3
OUT
IN
S4
4
5
6
OUT
IN
S5
4
5
6
OUT
IN
S7
4
5
6
OUT
IN
AMP_ASSIGN
S7
1
2
3
OUT
IN
S6
4
5
6
OUT
IN
MOMENTARY
DISPLAY_SELECT
S3
1
2
3
OUT
IN
MOMENTARY
PHONES_SOURCE
S2
1
2
3
22u
16v
C1
68u
16v
C2
1K
R237
22u
25v
C4
22u
25v
C5
16PDIL_HEADER
MC1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
100K
R223
MW1
11
MW1
10
MW1
1
MW1
4
MW1
6
MW1
3
MW1
9
MW1
8
MW1
7
MW1
5
MW1
2
22V
ZD14
22V
ZD7
22V
ZD12
22V
ZD13
22u
35V
C63
BINARY_CODE
ENCODER
4BIT
P12
1 2 3 4
5
22u
16v
C6
22u
16v
C7
22u
16v
C8
22u
16v
C9
D
CW
1B
20K
RP1
D
CW
INT_FX_RTN
1B
20K
RP1
D
CW
EXT_FX_RTN
B1
20K
RP4
D
CW
B1
20K
RP4
D
CW
AUX_TO_SUBS
1B
20K
RP3
D
CW
1B
20K
RP3
D
CW
1B
20K
RP2
D
CW
1B
20K
RP2
MPSA17
Q1
MPSA17
Q2
MPSA17
Q3
MPSA13
Q4
MPSA13
Q5
MPSA13
Q6
MPSA13
Q7
MPSA13
Q8
MPSA13
Q9
16v
33u
C12
16v
33u
C13
MPSA63
Q10
PROM
U14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
100n
C30
100n
C31
INT_FX_CLIP
RED
LD2
MON_POST_CLIP
RED
LD3
MON_PRE_CLIP
RED
LD4
L_LIM
RED
LD5
R_LIM
RED
LD6
RIGHT_SUB_CLIP
RED
LD7
LEFT_SUB_CLIP
RED
LD8
MAIN_CLIP
RED
LD9
EXT_FX_CLIP
RED
LD10
PHANTOM_ON
RED
LD11
270R
R190
270R
R191
1K
R192
1K
R193
C1 D1 B1 DP1 E2 D2 G2 C2 DP2
B2
A2
F2
CA2
CA1
A1
NC
NC
NC
U16
1
2
3
4
5
6
7
8
91
0
11
12
13
14
15
16
17
18
CW
INT_FX_MPRE_RTN
A
50K
P8
CW
INT_FX_MPOST_RTN
A
50K
P9
CW
EXT_FX_MPOST_RTN
1B
10K
P10
CW
EXT_FX_MPRE_RTN
1B
10K
P11
270R
R194
270R
R195
270R
R196
270R
R197
270R
R198
270R
R199
FP
249R
R200
FP
249R
R201
FP
249R
R202
FP
249R
R203
FP
249R
R204
FP
249R
R205
FP
249R
R206
FP
249R
R207
FP
249R
R208
FP
249R
R209
FP
249R
R210
10R
R211
10R
R212
D3
D4
D5
D6
D8
D9
D10
D11
22u
35V
C64
S
R
T
MON_PRE_OUT
NO_GOLD
JB1
1
2
3
4
5
6
S
R
T
MON_POST_OUT
NO_GOLD
JB2
1
2
3
4
5
6
S
R
T
L/MONO_FX_RTN
GOLD_TIP
JB3 1
2
3
4
5
6
S
R
T
R_FX_RTN
GOLD_T_R
JB4 1
2
3
4
5
6
S
R
T
SUB_R_OUT
NO_GOLD
JB5
1
2
3
4
5
6
S
R
T
SUB_L_OUT
NO_GOLD
JB6
1
2
3
4
5
6
S
R
T
B_PWRAMP_IN
GOLD_T&R
JB7 1
2
3
4
5
6
S
R
T
A_PWRAMP_IN
GOLD_T&R
JB8 1
2
3
4
5
6
S
R
T
MAIN_OUT
NO_GOLD
JB9
1
2
3
4
5
6
S
R
T
RVB_DEFEAT
NO_GOLD
JB10
1
2
3
4
5
6
S
R
T
AUX_L_IN
NO_GOLD
JB11
1
2
3
4
5
6
S
R
T
AUX_R_IN
NO_GOLD
JB12
1
2
3
4
5
6
S
R
T
EXT_FX_SND
NO_GOLD
JB13
1
2
3
4
5
6
S
R
T
PHONES
NO_GOLD
JB14
1
2
3
4
5
6
X1
1
2
X2
1
2
X3
1
2
AT_REAR_PANEL
X4
12
PTC
10R
1W
R213
PTC
10R
1W
R214
PTC
10R
1W
R215
PTC
10R
1W
R216
PTC
10R
1W
R217
PTC
10R
1W
R218
PTC
10R
1W
R219
16v 470p
C32
16v 470p
C33
16v 470p
C34
16v 470p
C35
25V 2n2
C36
25V 2n2
C37
25v 100n
C38
25v 100n
C39
16v 100p
C40
16v 100p
C41
16v 100p
C42
16v 100p
C43
16v 100p
C44
16v 470p
C45
16v
330n
C65
16v 330n
C66
16v
330n
C67
16v
22n
C46
16v 22n
C47
16v 22n
C48
16v 22n
C49
16v 330n
C50
16v
100n
C51
16v
100n
C52
PIN 11
D
IABC
1/2
LM13600
U17
13
15
14
16
12
9
10
PIN 11
D
IABC
1/2
LM13600
U17
4
2
3
1
5
8
7
BC560
Q11
BC560
Q12
BC560
Q13
L
R
TAPE_OUT
RCA
JB15
16v
470p
C53
16v
470p
C54
16v
10n
C55
25v
100n
C56
25v
100n
C57
16v
10n
C58
35V
100n
C59
35V
100n
C60
25v
100n
C73
25v
100n
C74
BD238
B
C
E
MC2
1
2
3
4
5
6
7
8
9
L3
L4
L5
L6
L7
L8
L9
L10
V-
V+
LO
INPUT
HI
REF
ADJ
MODE
L2
LED1(LO)
RIGHT_BAR
LM3916
U18
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
L3
L4
L5
L6
L7
L8
L9
L10
V-
V+
LO
INPUT
HI
REF
ADJ
MODE
L2
LED1(LO)
LEFT_BAR
LM3916
U19
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
GRN
LD12
GRN
LD13
GRN
LD14
GRN
LD15
GRN
LD16
GRN
LD17
RED
LD18
RED
LD19
RED
LD20
RED
LD21
RED
LD22
RED
LD23
GRN
LD24
GRN
LD25
GRN
LD26
GRN
LD27
GRN
LD28
GRN
LD29
GRN
LD30
GRN
LD31
L_BAR
AMBER
LD32
R_BAR
AMBER
LD33
4004
D15
22u
16v
C68
Q5 Q1 Q0 Q2 Q6 Q7 Q3 VN
Q8
Q4
Q9
CO
CE
C
RS
VP
MC14017BP
U20
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
Q5 Q1 Q0 Q2 Q6 Q7 Q3 VN
Q8
Q4
Q9
CO
CE
C
RS
VP
MC14017BP
U21
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
SUB_L_/_SUB_R
AMB
LD34
MAIN_/_EXTFX
AMB
LD35
MON1_/_MON2
AMB
LD36
AUX_L_/_AUX_R
AMB
LD37
VDP
Y
X
A
B
E
X0
X1
X2
X3
Y0
Y1
Y2
Y3VAN
VDN
4052
U15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1u
16v
C10
1u
16v
C11
BC550
Q14
BC550
Q15
BC550
Q16
BC550
Q17
BC550
Q18
BC550
Q19
BC550
Q20
BD238
Q21
10R
R220
1/4
MC4741
U12
2
3
1
1/4
MC4741
U12
6
5
7
1/4
MC4741
U12
9
10
8
1/4
MC4741
U12
13
12
14
1/4
MC4741
U13
13
12
14
1/4
MC4741
U13
9
10
8
1/4
MC4741
U13
2
3
1
1/4
MC4741
U13
6
5
7
BC264D
Q22
2K
R228
MC3
33u
16v
C14
33u
16v
C15
33u
16v
C16
33u
16v
C17
33u
16v
C18
33u
16v
C19
33u
16v
C20
33u
16v
C21
33u
16v
C22
33u
16v
C23
100n
C69
25v
4u7
C26
33u
16v
C27
33u
16v
C28
33u
16v
C29
L
R
AUX_INPUT
RCA
JB16
1K
R221
1K
R222
270R
R225
270R
R224
4K7
R227
4K7
R226
BC264D
Q23
MPSA17
Q24
2K
R229
4K99
R82
4K99
R37
4K99
R231
4K99
R230
10K
R232
33u
16v
C70
33u
16v
C71
16v
150p
C72
47K
R93
1/2
TLO72
U22
2
3
1
7K5
R233
1/2
TLO72
U22
6
5
7
35V
100n
C62
35V
100n
C61
1K
R236
4K7
R235
MPSA63
C
B
E
MPSA13
MPSA17
C
B
E
BC264D
D
S
G
BC550C
E
B
C
BC560C
1
8
YSL_PT#3611
FROM_PWR_SUPPLY
FX_INT
FX_INT
GEQOUT_R
FX_EXT
FX_EXT
M_SUB_R
M_SUB_R
RIGHT
RIGHT
GEQIN_L-
GEQIN_R-
MON_POST
MON_POST
MON_PRE
MON_PRE
M_MON_1
M_MON_1
GEQOUT_M
GEQIN_M-
M_MON_2
M_MON_2
LEFT
LEFT
M_EXT_FX
M_EXT_FX
LONG_RUN
IG
IG
IG
IG
IG
IG
IG
IG
IG
IG
IG
IG
IG
IG
IG
V-
V-
V-
V-
V-
V-
V-
V-
V-
V-
V-
V-
V-
V-
V-
V-
V-
V-
V-
V-
V-
V-
M_MAIN
M_MAIN
GEQOUT_L
M_SUB_L
M_SUB_L
M_AUX_R
M_AUX_R
CREF
CREF
CREF
CREF
CREF
CREF
CREF
CREF
CREF
PHANT+
PHANT+
PHANT+
LEFTS
RIGHTS
ENABLE48
+5V
+5V
+5V
+5V
+5V
+5V
+5V
AG
AG
AG
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
V+
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
DG
M_AUX_L
M_AUX_L
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
REV.
3.20
M1056
M1055/M1056
IS ON M1056
IS ON M1056
IS ON M1056
IS ON M1056
DOTTED LINE
DOTTED LINE
DOTTED LINE
DOTTED LINE
CIRCUIT WITHIN
CIRCUIT WITHIN
CIRCUIT WITHIN
CIRCUIT WITHIN
IS PART OF M1056
CIRCUIT WITHIN DOTTED LINE
IN=MON1-A,MAIN-B
OUT=SUBL-A,SUBR-B
OUT=DISSABLE
IN=PROCESSOR
OUT=P400\P1000
IN=P160\P600
R
L
L
R
DIN 45406:
DECAY=650mS
ATTACK=1.7mS
LIMITER
RIGHT
LIMITER
LEFT
STEREO
GRAPHIC
GRAPHIC
EQ
EQ
MONO
9 BAND
9 BAND
YORKVILLE SOUND LTD
PCB #:
DESIGN BY:
SCH ISSUE:
PCB VER:
OF
DWG #:
FOR MODEL(S):
TITLE:
CAD FILE NAME:
C:\PCAD\EXE\
DATE:
DRAWN BY:
_
1
1
PFI/TC
PFI
1.20
_
1.00
PROTO-GEQ
FEB/18/92
SP-MASTER_EQ
M1055EQ
M1055
25v
4n7
C1
7K5
R1
25v
22n
C2
25v
2n2
C3
25v
10n
C4
16KHz
Y
20K
P1
125Hz
Y
20K
P2
180K
R2
8KHz
Y
20K
P3
250Hz
Y
20K
P4
25v
1n
C5
4KHz
Y
20K
P5
500Hz
Y
20K
P6
2KHz
Y
20K
P7
100R
R3
620R
R4
25v
4n7
C6
30K
R5
D
63Hz
Y
20K
P18
12K
R6
25v
680p
C37
BC550
Q1
680R
R7
100R
R8
7K5
R9
56K
R10
BC550
Q2
820R
R11
47K
R12
BC560
Q3
7K5
R13
680R
R14
100R
R15
25v
4n7
C7
100R
R16
7K5
R17
D
8KHz
Y
20K
P17
BC550
Q4
680R
R18
100R
R19
7K5
R20
56K
R21
82K
R22
D
125Hz
Y
20K
P16
7K5
R23
25v
680p
C38
56K
R24
56K
R25
25v
68n
C40
25v
100n
C41
BC550
Q5
750R
R26
D
4KHz
Y
20K
P15
BC550
Q6
620R
R27
100R
R28
7K5
R29
56K
R30
100R
R31
7K5
R32
100R
R33
100R
R34
680R
R35
7K5
R36
BC560
Q7
56K
R37
47K
R38
D
250Hz
Y
20K
P14
D
2KHz
Y
20K
P13
BC550
Q8
620R
R39
100R
R40
7K5
R41
47K
R42
BC550
Q9
680R
R43
620R
R44
25v
18n
C8
25v
33n
C9
100R
R45
620R
R46
7K5
R47
100R
R48
D
500Hz
Y
20K
P12
7K5
R49
1/2
33078
U1
6
5
7
56K
R50
33K
R51
15K
R52
47K
R53
24K
R54
D
16KHz
Y
20K
P11
BC550
Q10
82K
R55
BC550
Q11
1/2
33078
U2
6
5
7
D
1KHz
Y
20K
P10
25v
47n
C10
25v
82n
C42
25v
180n
C43
25v
10n
C11
25v
18n
C12
25v
330n
C52
25v
680n
C55
25v
33n
C13
25v
68n
C44
25v
100n
C45
25v
1u
C58
25v 47p
C61
25v 33n
C14
25v 1n
C15
BC560
Q12
47K
R56
25v
4n7
C16
25v
10n
C17
100R
R57
620R
R58
7K5
R59
BC560
Q13
47K
R60
25v
1n
C18
25v
2n2
C19
100R
R61
620R
R62
7K5
R63
BC560
Q14
47K
R64
25v
10n
C20
25v
1u
C59
100R
R65
620R
R66
7K5
R67
BC560
Q15
56K
R68
25v
22n
C21
25v
47n
C22
100R
R69
680R
R70
7K5
R71
BC560
Q16
47K
R72
25v
180n
C46
25v
82n
C47
100R
R73
750R
R74
7K5
R75
BC560
Q17
82K
R76
25v
680n
C56
25v
330n
C53
100R
R77
820R
R78
7K5
R79
BC560
Q18
25v 1n
C23
25v 33n
C24
25v 47p
C62
30K
R80
1/2
33078
U2
2
3
1
D
1KHz
Y
20K
P10
24K
R81
15K
R82
33K
R83
1/2
33078
U1
2
3
1
63Hz
Y
20K
P8
12K
R84
1/2
TLO72
U3
2
3
1
33K
R85
15K
R86
12K
R87
12K
R88
D
16KHz
Y
20K
P11
30K
R89
180K
R90
D
500Hz
Y
20K
P12
D
2KHz
Y
20K
P13
D
250Hz
Y
20K
P14
D
4KHz
Y
20K
P15
D
125Hz
Y
20K
P16
D
8KHz
Y
20K
P17
D
63Hz
Y
20K
P18
1KHz
Y
20K
P9
1/2
TLO72
U3
6
5
7
25v 47p
C63
25v 33n
C25
25v 1n
C26
BC560
Q19
7K5
R91
820R
R92
100R
R93
25v
330n
C54
25v
680n
C57
82K
R94
BC560
Q24
7K5
R95
750R
R96
100R
R97
25v
82n
C48
25v
180n
C49
47K
R98
BC560
Q21
7K5
R99
680R
R100
100R
R101
25v
47n
C27
25v
22n
C28
56K
R102
BC560
Q26
7K5
R103
620R
R104
100R
R105
25v
1u
C60
25v
10n
C29
47K
R106
BC560
Q23
7K5
R107
620R
R108
100R
R109
25v
2n2
C30
25v
1n
C31
47K
R110
7K5
R111
620R
R112
100R
R113
25v
10n
C32
25v
4n7
C33
47K
R114
BC560
Q25
7K5
R115
620R
R116
100R
R117
25v
33n
C34
25v
18n
C35
56K
R118
BC560
Q20
7K5
R119
680R
R120
100R
R121
25v
100n
C50
25v
68n
C51
56K
R122
56K
R123
25v
680p
C39
25v
4n7
C36
100R
R124
680R
R125
7K5
R126
BC560
Q27
15K
R127
15K
R128
BC550C
CBE
BC560C
BC560
Q22
V-
V-
V-
CUT_L
GEQOUT_L
BOOST_L
SG
SG
SG
CUT_R
BOOST_R
GEQOUT_R
CUT_M
BOOST_M
GEQOUT_M
V+
V+
V+
GEQIN_R-
GEQIN_L-
NOTE: PART NUMBERS ON THIS SCHEMATIC WILL HAVE A "Q" SUFFIX ON THE M1055 PCB
