Alto AMX-120 User manual

ServiceManual
www.altoproaudio.com
Version: .1
MODEL: AMX-120 MKII

CONTENTS
1. Introduction...................................................................................................................1
2. Specification.................................................................................................................2
3. Block Diagram..............................................................................................................3
4. SchematicDiagram....................................................................................................4
5. PCB Layout................................................................................................................8
6. Wiring Diagram............................................................................................................11
7. Exploded Views & Mechanical Parts List....................................................................12
8. BOM List.....................................................................................................................14

The AMX-120 MKII is a professional compact mixer. You will get the smooth, accurate more natural and open
sound from this apparatus, and it is really ideal for small gigs, recording and fixed PA installations.
The AMX-120 MKII mixing console is packed with some key features that can not be found in other consoles of its
size: 2 mono input channels (these are provided with ultra low noise microphone pre-amplifiers and phantom
power at +48 Volt), each of which is provided with a 3 bands graphic equalizer for HI, MID and LOW controls; 8
stereo input channels; highly accurate 4-segment bar graph meters and 2-Track inputs assign-able to main mix,
control room / headphone outputs. Features as followings:
2 MIC input channels with gold plated XLRs and balanced LINE input;
8 stereo input channels with balanced TRS jacks;
Ultra-low noise discrete MIC pre-amps with +48V phantom power;
Extremely high headroom offering more dynamic range;
Switch-able low cut filter on each mono channel;
+4dB / -10dB gain select switch on stereo channels;
Warm, natural 3-band EQ on each mono channel;
Peak LED on each mono channel;
AUX send switch-able to PRE/POST fader;
Control room and headphone outputs;
2-Track inputs assignable to main mix, control room / headphone outputs;
Highly accurate 4-segment bar graph meters.
1. Introduction
--- 1 ---

Microphone input electronically balanced, discrete input configuration
Frequency response 10Hz to 55kHz, + /-3dB
Distortion (THD & N) 0.005% at +4dBu, 1kHz
Gain range 0dB to 44dB (MIC)
SNR (Signal to Noise Ratio) 115dB
Line input electronically balanced
Frequency response 10Hz to 55kHz, + /-3dB
Distortion (THD & N) 0.005% at +4dBu, 1kHz
Sensitivity range +15dBu to- 30dBu
Line input Unbalanced
Frequency response 10Hz to 55kHz, +/-3dB
Distortion (THD & N) 0.005% at +4dBu, 1kHz
Microphone input 1.4kOhm
Channel Insert return 2.5kOhm
All other inputs 10kOhm or greater
Tape out 1kOhm
All other output 120Ohm
Hi shelving +/-15dB @12kHz
Mid bell +/- 12dB @2.5kHz
Low shelving +/- 15dB @80Hz
Low Cut filter 75Hz, 18dB/oct.
Noise (Bus noise) Fader 0 dB, channels muted: 100dBr (ref.:+4dBu)
Fader 0dB, all input channels assigned and set to
UNITY gain: 90dBr (ref.:+4dBu)
Max output +22dBu unbalanced, 1/4" jacks
AUX Sends max out +22dBu
Main voltage USA/Canada 100 -120V~, 60Hz
Europe 210 240V~, 50Hz
U.K./Australia 240V~, 50Hz
Power Consumption 11 watts
Dimension (W*D*H) 208mm 275.5mm 35/43mm
(6.06" 7.81" 1.01"/1.30")
Net weight 1.65Kg (3.65lb)
Shipping weight 2.3Kg (5.11lb)
Main Mix Section
Power supply
(AC/AC Adaptor)
Physical
Mono input channels
Stereo input
channels
Impedances
Equalization
2. Specification
--- 2 ---

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RevisionModel No:
19-Dec-2003
ALTO MIXING CONSOLE
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AMX-120MKII BLOCK DIAGRAM
VER031216
A2(C)
MONO INPUT CHANNELS ( 1-2 )
2
1
3
MIC IN
+48V
3-BAND EQ
12K2.5K80
SG/OL
LEFT-BUS
RIGHT-BUS
AUX-1
RIGHT-BUS
LEFT-BUS
AUX-1
STEREO INPUT CHANNELS (3-10)
LEFT-BUS
RIGHT-BUS
AUX-1
AUX-1 AUX SEND
MAIN OUT
LEFT-BUS
RIGHT-BUS
2
1
3
2TK TO MIX
2
1
3RIGHT-BUS
LEFT-BUS
TAPE IN
RIGHT
2-TRACK
21
3
2TK TO CTRL ROOM
21
3
PHONES OUTPUT
LEFT METER
RIGHT METER
+/-15db
MAIN MIX
AUX SEND1
T
R
S
MAIN MIX LEFT
T
R
S
MAIN MIX RIGHT
T
R
S
CONTROL ROOM OUTPUT
LEFT
T
R
S
RIGHT
T
R
S
PHONES
T
R
S
& PHONES
CONTROL ROOM
LEFT
TAPE OUT
LEVEL
PAN
PHANTOM
LINE IN
GAIN
-
+
POWER
LO MID HI
1 2
1 2
AUX1
LEVEL
POST
PRE
BALANCE
AUX1
LEVEL
SG/OL
3c
5e
1a
4d
2b
LEFT(MONO)
3c
5e
1a
4d
2b
RIGHT
T
R
S
RN
TN
T
R
S
RN
TN
-
+
-
+
MIC GAIN:0~60dB
LINE IN TRIM:+15dB~-45dB
EFX SEND
EFX SEND
LEFT-BUS
RIGHT-BUS
AUX-1
EFX SEND
1 2
1 2
POST
PRE
2TK IN
LEVEL
3. Block Diagram
--- 3 ---

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RevisionModel No:
3-Jan-2004 KEVIN LIN.
INPUT STAGE ( CH1-CH4 )
41of
AMX-120 MKII VER031229
A2
EQ HI
12KHZ
C131
18n(M) VR4
B50K
R151
6K8
VR3
B50K
R150
6K8
LO
R47
10K0
C87
47u/25V
5
67
U9B
NJM4580M
R220
1M
C179
22P
R212
1K1
VR5
B50K
R137
1K3
MID
R196
910R
C155
12n(M)
R197
910R
C139
33n(M) C140
33n(M)
C171
12n(M)
C163
18n(M)
C88
47u/25V
VR11
W50K
R228
47K
R248
4K7
C195
2.2u/50V R152
6K8
TR2
BR
TR1
BR
R264
1K5 +VCC
LD1
RED
R236
22K
3
21
U9A
NJM4580M
VR9
W50K
PEAK
C89
47u/25V R256
3K9
R270
36K
C180
22P
C90
47u/25V
R284
5K11
AUX-1
LEVEL
AUX-POST
R287
5K11
R286
5K11
LEFT-BUS
RIGHT-BUS
PAN
PGND
80HZ
2.5K
EQ HI
12KHZ
C132
18n(M) VR7
B50K
R155
6K8
VR6
B50K
R154
6K8
LO
R55
10K0
C94
47u/25V
5
67
U10B
NJM4580M
R221
1M
C181
22P
R213
1K1
VR8
B50K
R139
1K3
MID
R198
910R
C156
12n(M)
R199
910R
C141
33n(M) C142
33n(M)
C172
12n(M)
C164
18n(M)
C95
47u/25V
VR14
W50K
R229
47K
R249
4K7
C196
2.2u/50V R156
6K8
TR4
BR
TR3
BR
R265
1K5 +VCC
LD2
RED
R237
22K
3
21
U10A
NJM4580M
VR12
W50K
PEAK
C96
47u/25V R257
3K9
R271
36K
C183
22P
C98
47u/25V
R288
5K11
AUX-1
LEVEL
AUX-POST
R291
5K11
R290
5K11
LEFT-BUS
RIGHT-BUS
PAN
80HZ
2.5K
AMX-120
AMX-120.S01 AMX-120
AMX-120.S03
J2
POST
(PRE)
J1
POST
(PRE)
(SOLTON 1K2)用
MIC GAIN=-10~-60dB
LINE IN GAIN=+10~-40dB
VR1
O10K
C1
470P C15
22u/35V R19
11K0
LINE IN1
MIC 1 C21
47u/63V R23
3K6
R15
6K81 1/4W
PH PWR
C3
470P
R16
6K81 1/4W
C22
47u/63V
C4
47P
R20
11K0 R24
3K6
C16
22u/35V
R69
51K1
R68
51K1
C2
470P
2
1
3
4
X1
SMC-6.02
R3
5K11
R4
5K11
C27
22P
C28
22P
R26
10K0
R73
27R 1%
C23
1000u/10V
3
21
U1A
NJM4580M
R25
10K0 R27
5K11
C29
22P R28
5K11
C30
22P
C17
47u/25
R5
20K 1%
3c
5e
1a
4d
2b
X3
JY-6351G-02-250
5
67
U1B
NJM4580M
3
21
U5A
NJM4580M
R2
4R7
R1
4R7
VR2
O10K
C5
470P
C18
22u/35V R21
11K0
LINE IN2
MIC 2
C24
47u/63V
R29
3K6
R17
6K81 1/4W
PH PWR
C10
470P
R18
6K81 1/4W
C25
47u/63V
C11
47P
R22
11K0 R30
3K6
C19
22u/35V
R386
51K1
R8
51K1
C7
470P
2
1
3
4
X2
SMC-6.02
R10
5K11
R11
5K11
C31
22P
C32
22P
R32
10K0
R74
27R 1%
C26
1000u/10V
3
21
U2A
NJM4580M
R31
10K0 R33
5K11
C33
22P R34
5K11
C34
22P
C20
47u/25
R12
20K 1%
3c
5e
1a
4d
2b
X4
JY-6351G-02-250
5
67
U2B
NJM4580M
3
21
U25A
NJM4580M
R38
4R7
R37
4R7
VR10
W50K
R77
4K7
R78
4K7
VR13
W50K
R79
4K7
R80
4K7
AMX-120
AMX-120.S02
84
U2C
84
U1C
84
U9C
C203
100n
C204
100n
+VCC
-VCC
C205
100n
C206
100n
C299
100n
C300
100n
84
U10C
C301
100n
C302
100n
84
U5C
84
U3C
84
U4C
C287
100n
C288
100n
C289
100n
C290
100n
C291
100n
C292
100n
VR15
W50K
R105
47K
R114
4K7
C106
2.2u/50V R91
6K8
TR6
BR
TR5
BR
R135
1K5 +VCC
LD3
RED
R125
22K 3
21
U4A
NJM4580M
VR19A
W50K
PEAK
C53
47u/25V R141
3K9 R153
36K
C110
22P
C56
47u/25V
R168
8K2
AUX-1
LEVEL
AUX-POST
R169
12K
R170
12K
LEFT-BUS
RIGHT-BUS
BAL
PGND
R40
10K0
R41
10K0
R104
47K
R126
22K 5
67
U4B
NJM4580M
VR19B
W50K
C54
47u/25V R142
3K9
R149
36K
C111
22P
C55
47u/25V
LEVEL
R96
10K0
R95
10K0
3c
5e
1a
4d
2b
X5
JY-6351G-02-250
T
R
S
RN
TN
LINE IN 3/4
3c
5e
1a
4d
2b
X6
JY-6351G-02-250
T
R
S
RN
TN
LEFT(MONO)
RIGHT
3
21
U3A
NJM4580M
R39
10K0
C9
22P
C51
47u/25V
R14
10K0
C6
22P
R6
10K0
C126
100P
R7
10K0
C127
100P
5
67
U3B
NJM4580M
R36
10K0
C12
22P
C52
47u/25V
R35
10K0
C8
22P
R9
10K0
C128
100P
R13
10K0
C129
100P
R187
20K
R186
20K
J3
POST
(PRE)
R112
4K7
R113
4K7
5
67
U5B
NJM4580M
R263
62K
R267
1K3
R273
20K
C208
47u/25V
C198
0.22u/50V
C199
0.22u/50V R269
6K8
LO CUT
SW3A
PS-22E85L
SW3B
PS-22E85L
C200
0.22u/50V
5
67
U25B
NJM4580M
R266
62K
R268
1K3
R274
20K
C209
47u/25V
C201
0.22u/50V
C202
0.22u/50V R272
6K8
LO CUT
SW4A
PS-22E85L
SW4B
PS-22E85L
C207
0.22u/50V
84
U25C
C210
100n
C211
100n
SW5A
PS-22E85L
SW5B
PS-22E85L
R302
1K2
R303
1K2
+4/-10 DB
+4/-10 DB
AMX-120 MKII(1/4)
VR20
W50K
UNINSERTED
4. Schematic Diagram
--- 4 ---

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RevisionModel No:
3-Jan-2004 KEVIN LIN.
INPUT STAGE ( CH5-CH8)
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AMX-120 MKII VER021229
A2
VR17
W50K
R109
47K
R120
4K7
C108
2.2u/50V R93
6K8
TR10
BR
TR9
BR
R138
1K5 +VCC
LD5
RED
R129
22K 3
21
U20A
NJM4580M
VR23A
W50K
PEAK
C65
47u/25V R145
3K9 R160
36K
C114
22P
C68
47u/25V
R176
8K2
AUX-1
LEVEL
AUX-POST
R174
12K
R175
12K
LEFT-BUS
RIGHT-BUS
BAL
PGND
R63
10K0
R64
10K0
R108
47K
R130
22K 5
67
U20B
NJM4580M
VR23B
W50K
C66
47u/25V R146
3K9
R159
36K
C115
22P
C67
47u/25V
LEVEL
R100
10K0
R99
10K0
3c
5e
1a
4d
2b
X9
JY-6351G-02-250
T
R
S
RN
TN
LINE IN 7/8
3c
5e
1a
4d
2b
X10
JY-6351G-02-250
T
R
S
RN
TN
LEFT(MONO)
RIGHT
3
21
U18A
NJM4580M
R62
10K0
C40
22P
C63
47u/25V
R59
10K0
C37
22P
R54
10K0
C136
100P
R56
10K0
C137
100P
5
67
U18B
NJM4580M
R61
10K0
C41
22P
C64
47u/25V
R60
10K0
C39
22P
R57
10K0
C138
100P
R58
10K0
C143
100P
R191
20K
R190
20K
J5
POST
(PRE)
R118
4K7
R119
4K7
84
U19C
84
U18C
C151
100n
C150
100n
+VCC
-VCC
C153
100n
C152
100n
84
U20C
84
U21C
C154
100n
C157
100n
C158
100n
C159
100n
U18~ U21=NJM4580M
VR16
W50K
R107
47K
R117
4K7
C107
2.2u/50V R92
6K8
TR8
BR
TR7
BR
R136
1K5 +VCC
LD4
RED
R127
22K 3
21
U21A
NJM4580M
VR21A
W50K
PEAK
C58
47u/25V R143
3K9 R157
36K
C112
22P
C60
47u/25V
R172
8K2
AUX-1
LEVEL
AUX-POST
R171
12K
R173
12K
LEFT-BUS
RIGHT-BUS
BAL
PGND
R49
10K0
R50
10K0
R106
47K
R128
22K 5
67
U21B
NJM4580M
VR21B
W50K
C59
47u/25V R144
3K9
R158
36K
C113
22P
C62
47u/25V
LEVEL
R98
10K0
R97
10K0
3c
5e
1a
4d
2b
X7
JY-6351G-02-250
T
R
S
RN
TN
LINE IN 5/6
3c
5e
1a
4d
2b
X8
JY-6351G-02-250
T
R
S
RN
TN
LEFT(MONO)
RIGHT
3
21
U19A
NJM4580M
R48
10K0
C14
22P
C57
47u/25V
R45
10K0
C13
22P
R42
10K0
C130
100P
R43
10K0
C133
100P
5
67
U19B
NJM4580M
R53
10K0
C35
22P
C61
47u/25V
R52
10K0
C36
22P
R44
10K0
C134
100P
R51
10K0
C135
100P
R188
20K
R189
20K
J4
POST
(PRE)
R115
4K7
R116
4K7
SW6A
PS-22E85L
SW6B
PS-22E85L
R304
1K2
R305
1K2
SW7A
PS-22E85L
SW7B
PS-22E85L
R306
1K2
R307
1K2
+4/-10 DB
+4/-10 DB
+4/-10 DB
+4/-10 DB
VR22
W50K
VR24
W50K
AMX-120 MKII(2/4)
UNINSERTED
UNINSERTED
--- 5 ---

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RevisionModel No:
3-Jan-2004 KEVIN LIN.
INPUT STAGE ( CH9-CH10)
43of
AMX-120MKII VER021229
A2
84
U11C
+VCC
-VCC
84
U12C
C184
100n
C185
100n
C186
100n
C187
100n
U18~ U21=NJM4580M
VR18
W50K
R111
47K
R123
4K7
C109
2.2u/50V R94
6K8
TR12
BR
TR11
BR
R140
1K5 +VCC
LD6
RED
R133
22K 3
21
U12A
NJM4580M
VR28A
W50K
PEAK
C99
47u/25V R147
3K9 R166
36K
C124
22P
C101
47u/25V
R184
8K2
AUX-1
LEVEL
AUX-POST
R183
12K
R185
12K
LEFT-BUS
RIGHT-BUS
BAL
PGND
R86
10K0
R87
10K0
R110
47K
R134
22K 5
67
U12B
NJM4580M
VR28B
W50K
C100
47u/25V R148
3K9
R167
36K
C125
22P
C103
47u/25V
LEVEL
R102
10K0
R101
10K0
3c
5e
1a
4d
2b
X19
JY-6351G-02-250
T
R
S
RN
TN
LINE IN 9/10
3c
5e
1a
4d
2b
X20
JY-6351G-02-250
T
R
S
RN
TN
LEFT(MONO)
RIGHT
3
21
U11A
NJM4580M
R85
10K0
C48
22P
C97
47u/25V
R84
10K0
C47
22P
R81
10K0
C146
100P
R82
10K0
C147
100P
5
67
U11B
NJM4580M
R90
10K0
C49
22P
C102
47u/25V
R89
10K0
C50
22P
R83
10K0
C148
100P
R88
10K0
C149
100P
R201
20K
R202
20K
J6
POST
(PRE)
R121
4K7
R122
4K7
8
914
U8C
LM339
1
6
7
U8B
LM339
1
6
7
U7B
LM339
8
914
U7C
LM339
LD9
GR LD11
GR LD13
GR LD15
GR
R245
120R
R246
110R R252
150R R254
1K R253
820R
+VCC
R251
10R
-VCC
PGND
10
11 13
U8D
LM339
5
42
U8A
LM339
5
42
U7A
LM339
10
11 13
U7D
LM339
LD10
GR LD12
GR LD14
GR LD16
GR
LEFT METER
(-20) (0)
3
21
U6A
NJM4580M
R258
100K
R259
100K C190
47u/25V
PGND
TR13
HR
+VCC
D1A
DA204K
D1B
DA204K
TR14
HR
R225
120R
R250
470R
R247
470R
R103
10K0
PGND
5
67
U6B
NJM4580M
R255
100K
R260
100K C191
47u/25V
PGND
312
U8E
LM339
312
U7E
LM339
84
U6C
NJM4580M
C182
100n
C178
100n
R243
47R
R242
47R
C104
47u/25V
C105
47u/25V
+VCC
-VCC
PGND
LD7
RED
LD8
GR
R124
4K7
R244
2K
PGND
PGND
PH PWR
(+5) (+18)
PWR ON
PHANTOM
+VCC
R262
10K0
R261
10K0
PGNDPGND
D2
RLS4148
D3
RLS4148
D4
RLS4148
D5
RLS4148
L-METER
R-METER
-VCC
SW8A
PS-22E85L
R308
1K2
+4/-10 DB
SW8B
PS-22E85L
R309
1K2
+4/-10 DB
VR29
W50K
AMX-120MKII (3/4)
UNINSERTED
--- 6 ---

1 2 3 4 5 6 78
A
B
C
D
8
7654321
D
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A
AMX-120 MKII.S03
Titel
Size
File:
Date: Drawn By:
Sheet
RevisionModel No:
3-Jan-2004 KEVIN LIN.
STEREO AUX & SENDS & MAIN OUT & 2TK & CTRL R & PHONES
44of
AMX-120 MKII VER031229
A2
C188
100P
C69
47u/25V R203
15K
R131
22K
C189
100P
C75
47u/25V R204
15K
R132
22K
VR26B
W50K
VR26A
W50K
3
21
U13A
NJM4580M
5
67
U13B
NJM4580M
R205
30K
C43
22P
C77
47u/25V
R177
5K11
R206
30K
C44
22P
C78
47u/25V
R180
5K11
5
67
U14B
NJM4580M
3
21
U14A
NJM4580M
R178
5K1
C116
22P
LEFT-BUS
RIGHT-BUS
C117
22P
R179
5K1
C71
47u/25V
C81
47u/25V
5
67
U15B
NJM4580M
3
21
U15A
NJM4580M
R163
30K
C119
22P
R230
3K6
C72
47u/25V
VR25B
W50K
MAIN MIX
VR25A
W50K
R162
30K
C118
22P
R231
3K6
C73
47u/25V
C74
47u/25V
C83
47u/25V
R65
10K0
R72
10K0
R211
120R
3c
5e
1a
4d
2b
X12
JY-6351G-02-250
R210
120R
3c
5e
1a
4d
2b
X15
JY-6351G-02-250
R218
120R
R209
120R
MAIN OUT
LEFT
RIGHT
R232
1K
R233
1K
L(WHITE)
R(RED)
C84
47u/25V
R195
20K 3
21
U16A
NJM4580M
R200
20K
C123
22P
C85
47u/25V
R75
10K0
R182
5K11
C76
47u/25V
R193
20K 5
67
U16B
NJM4580M
R194
20K
C120
22P
C79
47u/25V
R66
10K0
R181
5K11
TAPE IN
1
2
3
SW1A
PS-22E85L
LEFT-BUS
4
5
6
P
SW1B
PS-22E85L
RIGHT-BUS
2TK TO MIX
1
2
3
SW2A
PS-22E85L
R234
27K
2TK TO
3
21
U17A
NJM4580M
VR27A
W50K
C80
47u/25V R238
7K5
R164
36K
C46
22P
C82
47u/25V
R67
10K0
3
21
U23A
BA15218N
5
67
U23B
BA15218N
3c
5e
1a
4d
2b
X18
JY-6351G-02-250
R223
120R
R219
120R
CTRL ROOM OUT
C122
22P
R71
10K0
R216
120R
3c
5e
1a
4d
2b
X16
JY-6351G-02-250
R217
120R
PHONES
R215
120R
R214
120R
4
5
6
P
SW2B
PS-22E85L
R235
27K
5
67
U17B
NJM4580M
VR27B
W50K
C86
47u/25V R239
7K5 R165
36K
C45
22P
C93
47u/25V
R76
10K0
3c
5e
1a
4d
2b
X17
JY-6351G-02-250
3
21
U22A
BA15218N
5
67
U22B
BA15218N
R224
120R
R222
120R
R70
10K0
C121
22P
84
U22C
BA15218N
84
U23C
BA15218N
R241
47R
R240
47R
C91
47u/25V
C92
47u/25V
AUX RETURNS
L-METER
R-METER
3c
5e
1a
4d
2b
X11
JY-6351G-02-250
AUX SENDS
R208
120R
R207
120R
R192
20K
C70
47u/25V
3
21
U24A
NJM4580M
R161
36K
C42
22P
AUX-1
ROOM
C144
100P
C145
100P
TAPE OUT
MAIN MIX
T
R
S
RN
TN
LEFT-BUS
RIGHT-BUS
T
R
S
RN
TN
T
R
S
RN
TN
LEFT
RIGHT
R226
18K
R227
18K
CONTROL
PHONES/
CTRL ROOM
1 4
2 5
3
6
X21
SCP6873NS3232
LEFT
RIGHT
C176
100n
C177
100n
MOUT-L
MOUT-R
LEFT-BUS
RIGHT-BUS
AUX-1
84
U17C
84
U16C
+VCC
-VCC
84
U24C
C160
100n
C161
100n
C162
100n
C165
100n
C166
100n
C167
100n
84
U15C
84
U14C
C168
100n
C169
100n
C170
100n
C173
100n
84
U13C
C174
100n
C175
100n
U24= NJM4580M
U13~ U17= NJM4580M
EFXRTN-L
EFXRTN-R
C233
47u/25V
5
67
U24B
NJM4580M
R46
36K
C38
22P
R322
6K2
VR30
W50K
AUX SENDS
AMX-120 MKII (4/4)
D12
1N4002
D13
1N4002
ZD1
1N5261
C401
47uF/100V
D15
1N4002
D14
1N4002
C402
47uF/100V
TR21
7815A
C408
1000uF/35V
PGND
C403
47u/25V
D16
RLS4148
C409
1000uF/35V C404
47u/25V
D11
RLS4148
C405
100uF/100V
PGND
R441
390K
C407
47uF/100V
R442
10K0
R443
10R
R440
20K
C406
47uF/100V
TR23
TIP122
+VCC
-VCC
PH PWR
TR22
7915A
PHANTOM PWR
(47V 0.5W)
CN1
AC IN SW11
PGND R444
0R0
PHANTOM
SW10
TR20
7805
PGND
+5VD
C400
1000uF/16V
PGNDDGND
R445
0R0
AMX-120 NOT USE
--- 7 ---

AMX-120 MKII-Top Overlay
5. PCB Layout
--- 8 ---

AMX-120 MKII-Bottom Overlay
--- 9 ---

AMX-120 MKII-Bottom Layer
--- 10 ---

123456
A
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54321
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A
Title
Number RevisionSize
B
Date: 18-Dec-2003 Sheet of
File:AMX-120MKII DrawnBy:
A
M
X
-
1
2
0
S
W
1
1
S
W
1
0
D
C
I
N
P
O
W
E
R
S
W
P
H
A
N
T
O
M
S
W
A
C
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3
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V
T
G
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4
0
電壓轉換器
AMX-120 MKII WIRING DIAGRAM
6. Wiring Diagram
Voltage transform
MKII
--- 11 ---

7. Exploded Views & Mechanical Parts List
MODEL No: AMX-120 MKII
--- 12 ---

S/N Part No Description Specification Qty
1 MA04536 panel AMX-120 ALTO 1
2 MB03080 rear board AMX-120 1
3 HI00026 power switch RA12KKATOF 2P 1
4 HI00171 power switch R612KKAT0F1 1
5NI02377 knob
φ5.5*7.5mm(3.3*3.3mm)
6
6 NI01863 key φ5.5*W10*7.5 2
7 NI02083 knob φ10.5*18mm 6
8 NI02081 knob φ10.5*18mm 7
9 NI02082 knob φ10.5*18mm 6
10 NI02817 knob φ10.5*18mm 8
11 NI02714 knob φ10*13.5mm 2
12 NI02837 knob φ35*11mm 534C 1
13 MG00041 screw M3*6 20
14 MG00061 screw M3*10 8
15 ME00060 nut JY-6351G-02-250 16
16 MF00061 washer JY-6351G-02-250 16
17 MI01906 heat sink AMX-120_V1.1 1
18 NC00005 silicone insulator TO-220 square type 3
19 MG00162 screw M3*8 3
20 ME00015 nut 3m/m 3
21 NI02834 handle 208*33*26mm AMX-120 black 1
22 HK00813 PC board P-AMX-120FX-DIP(AMX-120) 1
23 NI02249 insulate bean TW-1(TO-220) 3
Mechanical Parts List
--- 13 ---

S/NLayer Part NoDescriptionSpecificationInsert locatio Remark
1PF03649 MIXING CONSOLE AMX-120 MKⅡ
_ALTO_240V_CH_(DYNAMIC)
2├0001 TG00038 adaptor 240V/50Hz_AC18V/1000mA_EI-48
3├0002 NI00252 sleeve φ4*20mm
4├0003 NI00498 self-adhere foot cushion 12.7*7*6mm(SF-005)
5├0004 NF01656 instruction AMX-120 ALTO_V1.4
6├0005 NI03063 handle AMX-100;100FX;120_V1.0
7├0006 NI02837 knob φ35*11mm 534C
8├0007 NI02714 knob φ10*13.5mm
9├0008 NI02377 knob-RS φ5.5*7.5(3.3*3.3mm)_V1.2
10 ├0009 NI01863 key-RS φ5.5*W10*7.5_V1.3
11 ├0010 NI02817 knob φ10.5*18mm
12 ├0011 NI02081 knob φ10.5*18mm
13 ├0012 NI02083 knob φ10.5*18mm
14 ├0013 NI02082 knob φ10.5*18mm
15 ├0014 NE12191 label AMX-120
16 ├0015 NE05004 label ALTO PF_V1.2
17 ├0016 NE02717 label MADE IN CHINA
18 ├0017 NB02748 carton AMX-100;100FX;120_V1.0
19 ├0018 NB02750 gift carton-RS AMX-120 ALTO _V1.0
20 ├0019 NB02888 barrier AMX-100;120_V1.0
21 ├0020 NB02887 barrier AMX-100;120_V1.0
22 ├0021 MI02085 fixed bracket AMX-120 left_V1.0
23 ├0022 MI02087 fixed bracket AMX-120 right_V1.0
24 ├0023 NA00861 PE bag-RS 0.04t*350*230mm_V1.0
25 ├0024 MG00304 copper pillar M3*14*0.5PH Fix PCB and front
panel
26 ├0025 MG00041 screw M3*6
27 ├0026 MG00061 screw-RS M3*10
28 ├0027 MG00050 screw M3*8
29 ├0028 MF00061 MIC jack φ9.6*φ13*0.5t
30 ├0029 ME00060 MIC jack JY-6351G-02-250
31 ├0030 MA06827 panel-RS AMX-120-MKⅡ ALTO_V1.0
32 ├0031 MB03080 rear board-RS AMX-120_V1.4
33 ├0032 HI00171 power switch-RS R612KKAT0F1
34 ├0033 HI00026 power switch-RS RA12KKATOF 2P
35 ├0034 HA01388 wire-RS 2P 100mm UL1007 24AWG
36 ├0035 HA01442 wire-RS 2P 200mm UL1007 26AWG
37 ├0036 HK00813 PC board P-AMX-120FX-DIP(AMX-120)
38 │ ├0001 CB00242 electrolytic capacitor 22uF/35V φ5*11mm C15,C18
39 │ ├0002 CB00042 electrolytic capacitor 47uF/63V 105℃ LZ φ8*11mm C21,C22,C24,C25
40 │ ├0003 CB00328 electrolytic capacitor-RS 100uF/100V φ10*20mm 105℃ C405
41 │ ├0004 CB00255 electrolytic capacitor 1000uF/10V φ8*11mm 5mm C23,C26
42 │ ├0005 CB00134 electrolytic capacitor 1000uF/35V 105℃ SH φ12*21mm C408,C409
43 │ ├0006 HC00183 DC jack-RS KJ-36-S φ3.5 CN1
44 │ ├0007 SA00052 L.E.D φ3 round(green)long foot 26 LD8,LD9,LD10,LD11,LD12
45 │ ├0008 SA00053 L.E.D φ3 round(red)long foot 26mm LD1,LD2,LD7,LD15,LD16
46 │ ├0009 SA00054 L.E.D 3m/m round(yellow)long foot 26 LD13,LD14
47 │ ├0010 NI01782 LED spacer support LEDS-11 11mm
8. BOM List
--- 14 ---

S/NLayer Part NoDescriptionSpecificationInsert locatio Remark
48 │ ├0011 HC00065 connector(male) 2P 2.5mm 90° SW10,SW11
49 │ ├0012 HI00236 push-button switch-RS 2 6P KFC-D85-C(SELF-LOCK) SW1,SW2,SW3,SW4,SW5,SW6,SW
7,SW8
50 │ ├0013 SD00077 integrated circuit-RS L7815CV(TO220)/(ST/MOROCCO) TR21
51 │ ├0014 SD00079 integrated circuit L7915CV(TO220)/(ST) TR22
52 │ ├0015 SB00043 transistor-RS-ACT TIP122(TO220)/(ST) TR23
53 │ ├0016 SD00007 integrated circuit BA15218N(M5218L)(SIP8)/(ROHM) U22,U23
54 │ ├0017 RC00727 potentiometer-RS Z10KΩ XV09213YNPV30F914Z10K VR1,VR2
55 │ ├0018 RC00369 potentiometer(A10K-41
stage) W50KΩ RV16A01-30-25F-W50K-
3F97 VR25
56 │ ├0019 HC00125 MIC jack-RS JY-6351G-02-250 X3,X4,X5,X6,X7,X8,X9,X10,X11,X
15,X16,X17,X18,X19,X20,X12
57 │ ├0020 HC00126 balance MIC jack-RS JY-5042-030G female plug 180° X1,X2
58 │ ├0021 HC00403 RCA jack SCP6873NS3232T2 4P X21
59 │ ├0022 MI01906 heat sink-RS-ACT AMX-120_V1.4
60 │ ├0023 NI02249 plastic washer TW-1(TO-220)
61 │ ├0024 NC00167 mica-RS 13*18(φ3.6)TO-220
62 │ ├0025 MG00166 screw M3*10
63 │ ├0026 ME00015 color nut 3m/m
64 │ ├0027 MF00037 washer φ3.2*φ5*0.8t
65 │ ├0028 ME00303 copper nut-RS φ10*φ7*2.5
66 │ ├0029 MF00189 washer-RS φ12*φ7.2*0.4
67 │ ├0030 HA00375 wire-RS 100mm black L5R5
68 │ ├0031 NI00252 sleeve φ4*20mm
69 │ ├0032 HA02382 wire-RS 55mm black L5R5 P7-P8
70 │ ├0033 HA00053 wire-RS 74mm black L3R3 P1-P3
71 │ ├0034 HA02201 wire-RS 18mm black L5R12 P3-P4
72 │ ├0035 AC00603 lead free soldering bar S100
73 │ ├0036 HK00817 PC board P-AMX-120FX-SMD(AMX-120)
74 │ │ ├0001 CI00059 SMD ceramic capacitor
0603 100PF/50V NPO ±5%
C126,C127,C128,C129,C130,C133,C
134,C135,C136,C137,C138,C143,C1
44,C145,C146,C147,C148,C149,C18
8,C189
75 │ │ ├0002 CI00063
S
MD ceram
i
c ca
p
ac
i
to
r
0603
470PF/50V NPO ±5﹪ C1,C2,C3,C5,C7,C10
76 │ │ ├0003 CI00075 SMD ceramic capacitor
0603 0.1uF/50V Y5V +80,-20%
C150,C151,C152,C153,C154,C157,C
158,C159,C160,C161,C162,C165,C1
66,C167,C168,C169,C170,C173,C17
4,C175,C176,C177,C178,C182,C184,
C185,C186,C187,C203,C204,C205,C
206,C210,C211,C287,C288,C289,C2
90,C291,C292,C299,C300,C301,C30
2,C58,C59,C65,C66
77 │ │ ├0004 SE00008 SMD rectifier diode DA204K/T-146 D1
78 │ │ ├0005 SE00011 SMD rectifier diode RLS4148 0.5A (LL-34) D2,D3,D4,D5,D11,D16
79 │ │ ├0006 RD00059 SMD fixed resistor 1/10W 0.0Ω ±5% 0603 R445
80 │ │ ├0007 RD00061 SMD fixed resistor 1/10W 10Ω ±5% 0603 R251
81 │ │ ├0008 RD00265 SMD fixed resistor 1/10W 27Ω ±5% 0603 R73,R74
82 │ │ ├0009 RD00065 SMD fixed resistor 1/10W 47Ω ±5% 0603 R242,R243,R1,R2,R37,R38
83 │ │ ├0010 RD00305 SMD fixed resistor 1/10W 110Ω ±5% 0603 R246
84 │ │ ├0011 RD00069 SMD fixed resistor 1/10W 120Ω ±5% 0603 R207,R208,R209,R210,R211,R214,R
215,R216,R217,R218,R219,R222,R2
23,R224
85 │ │ ├0012 RD00070 SMD fixed resistor 1/10W 150Ω ±5% 0603 R252
--- 15 ---

S/NLayer Part NoDescriptionSpecificationInsert locatio Remark
86 │ │ ├0013 RD00078 SMD fixed resistor 1/10W 470Ω ±5% 0603 R247,R250
87 │ │ ├0014 RD00082 SMD fixed resistor 1/10W 820Ω ±5% 0603 R253
88 │ │ ├0015 RD00349 SMD fixed resistor 1/10W 910Ω ±5% 0603 R196,R197,R198,R199
89 │ │ ├0016 RD00083 SMD fixed resistor 1/10W 1.0KΩ ±5% 0603 R232,R233,R254,R124
90 │ │ ├0017 RD00350 SMD fixed resistor 1/10W 1.1KΩ ±1% 0603 R212,R213
91 │ │ ├0018 RD00084 SMD fixed resistor 1/10W 1.2KΩ ±5% 0603 R302,R303,R304,R305,R306,R307,R
308,R309
92 │ │ ├0019 RD00351 SMD fixed resistor 1/10W 1.3KΩ ±5% 0603 R137,R139,R267,R268
93 │ │ ├0020 RD00085 SMD fixed resistor 1/10W 1.5KΩ ±5% 0603 R264,R265
94 │ │ ├0021 RD00087 SMD fixed resistor 1/10W 2.0KΩ ±5% 0603 R244
95 │ │ ├0022 RD00352 SMD fixed resistor 1/10W 3.6KΩ ±5% 0603 R23,R24,R29,R30,R230,R231
96 │ │ ├0023 RD00092 SMD fixed resistor 1/10W 3.9KΩ ±5% 0603 R148,R256,R257
97 │ │ ├0024 RD00093 SMD fixed resistor 1/10W 4.7KΩ ±5% 0603 R77
,
R78
,
R79
,
R80
,
R112
,
R113
,
R115
,
R116,R119,R121,R122,R248,R249,R
118
98 │ │ ├0025 RD00096 SMD fixed resistor 1/10W 6.2KΩ ±5% 0603 R125,R126,R127,R128,R129,R130,R
133,R134
99 │ │ ├0026 RD00097 SMD fixed resistor 1/10W 6.8KΩ ±5% 0603 R150,R151,R152,R154,R155,R156,R
269,R272
100 │ │ ├0027 RD00098 SMD fixed resistor 1/10W 7.5KΩ ±5% 0603 R238,R239
101 │ │ ├0028 RD00099 SMD fixed resistor 1/10W 8.2KΩ ±5% 0603 R168,R172,R176,R184
102 │ │ ├0029 RD00102 SMD fixed resistor 1/10W 12KΩ ±5% 0603 R169,R170,R171,R173,R174,R175,R
183,R185
103 │ │ ├0030 RD00103 SMD fixed resistor 1/10W 15KΩ ±5% 0603 R203,R204
104 │ │ ├0031 RD00104 SMD fixed resistor 1/10W 18KΩ ±5% 0603 R226,R227
105 │ │ ├0032 RD00306 SMD fixed resistor 1/10W 20KΩ ±5% 0603 R186,R187,R188,R189,R190,R191,R
192,R193,R194,R195,R200,R201,R2
02,R273,R274
106 │ │ ├0033 RD00105 SMD fixed resistor 1/10W 22KΩ ±5% 0603 R131,R132,R236,R237,R275,R322,R
162,R163
107 │ │ ├0034 RD00106 SMD fixed resistor 1/10W 27KΩ ±5% 0603 R234,R235
108 │ │ ├0035 RD00107 SMD fixed resistor 1/10W 30KΩ ±5% 0603 R205,R206
109 │ │ ├0036 RD00353 SMD fixed resistor 1/10W 36KΩ ±5% 0603 R46,R149,R153,R157,R158,R159,R1
60,R161,R164,R165,R166,R167,R27
0
,
R271
110 │ │ ├0037 RD00111 SMD fixed resistor 1/10W 47KΩ ±5% 0603 R228,R229
111 │ │ ├0038 RD00113 SMD fixed resistor 1/10W 62KΩ ±5% 0603 R263,R266
112 │ │ ├0039 RD00116 SMD fixed resistor 1/10W 100KΩ ±5% 0603 R255,R258,R259,R260
113 │ │ ├0040 RD00345 SMD fixed resistor 1/10W 390KΩ ±5% 0603 R441
114 │ │ ├0041 RD00125 SMD fixed resistor 1/10W 1.0MΩ ±5% 0603 R220,R221
115 │ │ ├0042 RD00210 SMD precise resistor 1/10W 5.11KΩ ±1% 0603 R3,R4,R10,R11,R27,R28,R33,R34,R
177,R180,R181,R182,R284,R286,R2
87,R288,R290,R291
116 │ │ ├0043 RD00214 SMD precise resistor 1/10W 10.0KΩ ±1% 0603
R6,R7,R9,R13,R14,R25,R26,R31,R3
2,R35,R36,R39,R40,R41,R42,R43,R
44,R45,R47,R48,R49,R50,R51,R52,
R53,R54,R55,R56,R57,R58,R59,R60
,R61,R62,R63,R64,R65,R66,R67,R7
0,R71,R72,R75,R76,R81,R82,R83,R
84,R85,R86,R87,R88,R89,R90,R95,
R96,R97,R98,R99,R100,R101,R102,
R103,R261,R262,R442,R107,R108,R
109,R117,R178,R179
117 │ │ ├0044 RD00334 SMD precise resistor 1/10W 11.0KΩ ±1% 0603 R19,R20,R21,R22
118 │ │ ├0045 RD00371 SMD precise resistor 1/10W 51.1KΩ ±1% 0603 R8,R68,R69,R386
119 │ │ ├0046 SF00056 transistor MMBT3904(SOT23)/(PHI) TR1,TR2,TR3,TR4,TR15
--- 16 ---

S/NLayer Part NoDescriptionSpecificationInsert locatio Remark
120 │ │ ├0047 SF00053 transistor MMBT3906(SOT23)/(PHI) TR13,TR14
121 │ │ ├0048 SG00210 SMD integrated circuit LM339DT/(ST) U7,U8
122 │ │ ├0049 SG00558 integrated circuit-RS UTC4580M(4580M )(SOP8)/(YW) U1,U2,U3,U4,U5,U6,U9,U10,U11,U
12,U13,U14,U15,U16,U17,U18,U19,
U20,U21,U24,U25,U26,U27
123 │ │ ├0050 RD00365 SMD precise resistor 1/10W 5.62KΩ ±1% 0603 R104,R105,R106,R114
124 │ │ ├0051 AE00553 SenJu solder paste M705-GRN360-K2-V 0.5KG/bottle
125 │ │ ├0052 CI00268 SMD ceramic capacitor-RS
0603 47PF/50V NPO ±5﹪ C4,C11
126 │ │ ├0053 CI00266 SMD ceramic capacitor-RS
0603 22PF/50V NPO ±5﹪
C6,C8,C9,C12,C13,C14,C27,C28,C2
9,C30,C31,C32,C33,C34,C35,C36,C
37,C38,C39,C40,C41,C42,C43,C44,
C45,C46,C47,C48,C49,C50,C110,C1
11,C112,C113,C114,C115,C116,C11
7,C118,C119,C120,C121,C122,C123,
C124,C125,C179,C180,C181,C183,C
106,C108,C109,C192
127 │ │ └0054 HK00834 PC board P-AMX-120-AI
128 │ │ ├0001 HA01920 wire-RS 6mm
J15,J16,J18,J19,J20,J21,J22,J23,J25,J
26,J28,J29,J30,J31,J36,J37,J38,J41,J4
2,J49,J52,J53,J55,J56,J57,J58,J60,J61
,J64,J65,J67,J69,J70,J71,J72,J73,J76,
J77,J78,J80,J81,J83,J84,J85,J87,J88,J
89,J91,J93,J102,J103,J104,J107,J108,
J109,J112,J113,J118,J119,J121,J123,
J126,J128,J129,J130,J131,J133,J135,
J136,J137,J140,J141,J143,J145,J146,
J151,J155,J156,J159,J164,J167,J170,
J171,J173,J174,J176,J177,J178,J179,
J180,J181,J182,J183,J188,J190,J191,
J192,J193,J198,J199,J202,J205,J206,
J207,J209,J211,J214,J215,J216,J220,
J221,J222,J224,J225,J226,J227,J231,
J232,J233,J234,J235,J236,J238,J239,
J240,J241,J242,J244,J245,J246,J248,
J249,J122,J229,J247,J117,J124,J125,
J172,J175
129 │ │ ├0002 HA01925 jump 10mm
J11,J12,J13,J14,J17,J24,J27,J32,J35,J
39,J40,J44,J45,J46,J47,J48,J50,J51,J5
4,J59,J62,J66,J68,J75,J79,J86,J92,J94
,J100,J101,J115,J116,J127,J139,J142,
J147,J152,J153,J154,J157,J158,J161,
J163,J165,J168,J169,J184,J185,J187,
J189,J194,J195,J196,J197,J200,J204,
J208,J210,J217,J218,J219,J223,J228,
J132,J237,J111,J138,J74,J230
130 │ │ ├0003 HA01931 jump 16mm
J7,J8,J10,J33,J43,J63,J90,J95,J96,J97
,J98,J99,J114,J144,J148,J149,J150,J1
60,J162,J186,J201,J203,J212,J213,J2
43,J250,J251,J9
131 │ │ ├0004 CB00238 electrolytic capacitor 0.22uF/50V φ5*11mm C198,C199,C200,C201,C202,C207
132 │ │ ├0005 CB00248 electrolytic capacitor 2.2uF/50V ψ4*5mm C195,C196
133 │ │ ├0006 CB00242 electrolytic capacitor 22uF/35V φ5*11mm C16,C19
134 │ │ ├0007 CB00194 electrolytic capacitor 47uF/25V φ5*11mm
C17,C20,C51,C52,C53,C54,C55,C56
,C57,C60,C61,C62,C63,C64,C67,C6
8,C69,C70,C71,C72,C73,C74,C75,C
76,C77,C78,C79,C80,C81,C82,C83,
C84,C85,C86,C87,C88,C89,C90,C91
,C92,C93,C94,C95,C96,C97,C98,C9
9,C100,C101,C102,C103,C104,C105,
C190,C191,C208,C209,C233,C403,C
404,C107
135 │ │ ├0008 CB00254 electrolytic capacitor 47uF/100V φ10*12mm 5mm C401,C402,C406,C407
--- 17 ---

S/NLayer Part NoDescriptionSpecificationInsert locatio Remark
136 │ │ ├0009 CF00138 metal-film capacitor MSC 0.012uF/63V ±5% CASE01 C155,C156,C171,C172
137 │ │ ├0010 CF00136 metal-film capacitor MSC 0.018uF/63V 5% CASE01 C131,C132,C163,C164
138 │ │ ├0011 CF00137 metal-film capacitor MSC 0.033uF/63V 5% CASE01 C139,C140,C141,C142
139 │ │ ├0012 RA01258 fixed resistor 1/4W 10Ω R443
140 │ │ ├0013 RA01260 fixed resistor 1/4W 120Ω R225,R245
141 │ │ ├0014 RA01115 fixed resistor 1/4W 20KΩ R440
142 │ │ ├0015 RA01259 fixed resistor 1/4W 47Ω R240,R241
143 │ │ ├0016 RA01262 precise resistor 1/4W 6.81KΩ ±1% R15,R16,R17,R18
144 │ │ ├0017 SA00127 zener diode 1/2W 47V 1N5261 ZD1
145 │ │ └0018 HB01111 PC板-RS AMX-120FX_VER040711
146 │ ├0037 SA00175 Schottky barrier diode 1A/40V 1N5819
147 │ ├0038 RC00672 potentiometer-RS B
50
K
Ω
XV
09213
YNPV
30
F-
1
B
50K
CC
VR3,VR4,VR5,VR6,VR7,VR8
148 │ ├0039 RC00703 potentiometer-RS W50KΩ XV09213YNPV30F-4BP50K
CC
VR9,VR10,VR11,VR12,VR13,VR14
,VR15,VR16,VR17,VR18,VR20,VR
22,VR24,VR29,VR30
149 │ ├0040 RC00670 potentiometer-RS W50KΩ XV012313YGPV30F-4B50K
C.C VR19,VR21,VR23,VR27,VR28,VR3
1
150 │ ├0041 SA00094 rectifier diode 1N4002/100V D12,D13,D14,D15
151 │ ├0042 ND00957 EV foam-RS 1.0t*265*7mm black
152 │ └0043 CB00151 electrolytic capacitor 220uF/63V φ10*16mm
153 ├0037 NA00863 PE bag-RS 0.04t*440*350 mm Machine package
154 ├0038 NA00862 PE bag-RS 0.04t*580*300 mm Rack package
155 ├0039 NF00061 assurance card-RS-C ALTO_V1.1
156 ├0040 NE19912 label-RS-CT N2609 DYNAMIC MUSIC_V1.0
157 └0041 NE19901 label-RS N2609_V1.0
--- 18 ---
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