Alto AMX 180FX-USB User manual

MODEL: AMX 180FX-USB

CONTENT
1. INTRODUCTION……………………………………………………………………………..1
2. TECHNICAL SPECIFICATION……………………………………………………………..2
3. BLOCK DIAGRAM……………………………………………………………....................35
4. SCHEMATIC DIAGRAM…………………………………………………………………….47
5. WIRING DIAGRAM………………………………………………………………………….1211
6. PCB LAYOUT………………………………………………………………………………..1313
7. TEST PROCEDURE………………………………………………………….....................1819
8. EXPLODED VIEW & MECHANICAL PARTS LIST……………………………………..2529
9. BOM…………………………………………………………………………………………..273

1. INTRODUCTION
- 5 MIC input channels with gold plated XLR and balanced LINE inputs
- 4 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
- Insert on each of mono input channels
- Switchable Low-cut filter on each mono channel
- +48dBu/-10dBV on each channel
- Warm, natural 3-babd EQ on each channel
- Peak LED on each channel
- Mute/ALT 3-4, SOLO function on each channel
- 4 AUX returns for additional functionality
- Control room and headphone outputs
- 2-Track inputs assignable to main mix, control room/headphone outputs
- Highly accurate 12-segment bar graph meters
- 24 bit digital effect processor
- 256 effects (16 presets*16 variations)
- Effect on/off by means of MUTE switch or a footswitch connected to the DFX
FOOTSWITCH
- 16 Bit 32~48KHz ADC/DAC USB input and output with selectable track
- No software drivers are need with windows XP or Mac OSX
- Performance and excellent noise figures
- Manufactured under ISO9001 certified management system
- 1 -

15dB @ 12KHz
2. TECHNICAL SPECIFICATION
Mono input channels Microphone input Electronically balanced ,discrete input configuration
Frequency response 10Hz to 55KHz, 3dB
Distortion (THD&N)
Gain range
SNR (Signal Noise Rated)
Line input
Frequency response
Distortion (THD&N)
Sensitivity range
0.005% at +4dBu, 1KHz
0dB to 44dB(MIC)
115dB
Electronically balanced
10Hz to 55KHz, 3dB
0.005% at +4dBu, 1KHz
+15dBu to -30dBu
Stereo input channels
10Hz to 55KHz, 3dB
Main Mix Section Noise (Bus noise ) Fader 0 dB, channels muted:-100.0dBr (ref.:+4dBu)
Fader 0 dB,all input channels assigned and set to
UNITY gain:-90dBr(ref.:+4dBu)
Max output +22dBu balanced XLR,
+22dBu unbalanced,1/4" jacks
AUX Return gain range OFF to +15dB
AUX Sends max out +22dBu
Line input Balanced
Frequency response
Distortion (THD&N) 0.005% at +4dBu, 1KHz
Impedance Microphone input 1.4K ohm
Channel insert return 2.5K ohm
All other inputs 10Kohm or greater
Tape out 1K ohm
All other output 120 ohm
Equalization Hi shelving
Mid bell
Low shelving
12dB @ 2.5KHz
15dB @ 80Hz
USB SECTION
390mm 330mm 43mmDimension (W D H)
35watts
Power Consumption
Power supply
(AC/AC Adaptor)
Main voltage USA/ Canada 100-120V~,60Hz
Europe 210-230V~,50Hz/60Hz
U.K/Australia 240V~,50Hz
Physical
Net weight
ADC / DAC 16 Bit 32~48KHz
Fully Compliant with USB 1.1 specification
S/PDIF input and output interface
No software drivers or need with windows XP or Mac OS X
15.35" 12.99" 1.69"
3.8Kg
-2 -

12345678910 11 12
A B C D
12
1110987654321
D
C B A
MONO INPUT CHANNELS (1-4)
2 1 3
MIC IN
+48V
3-BAND EQ 12K80
HI PASS
2
1 3
LO CUT
PEAK
LEFT-BUS
RIGHT-BUS
AUX-1
AUX-2
RIGHT-BUS
LEFT-BUS AUX-1 AUX-2
STEREO INPUT CHANNELS (5-12)
EQ 12K80
LEFT-BUS
RIGHT-BUS
AUX-1
AUX-2
AUX-1
AUX SEND
AUX-2
MAIN OUT
LEFT-BUS
RIGHT-BUS
2TK TO MIX
RIGHT-BUS LEFT-BUS
TAPE IN
RIGHT
2TK
2TK
75Hz
+/-15db
MAIN MIX LEVEL
AUX SEND1
T R S
AUX SEND2
T R S
MAIN MIX LEFT
T R S
MAIN MIX RIGHT
T R S
LEFT
TAPE OUT
2 1 3 2 1 3
PAN
PHANTOM
LINE IN
GAIN
-
+
POWER
MID HI
AUX1 AUX2
LEVEL
POST
PRE
BALANCE
AUX1 AUX2
LEVEL
PEAK
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:0~40dB LINE IN TRIM:+15dB~-25dB
AFL-L
AFL-R
SOLO(PFL)
SOLO
ON
()
AFL-L AFL-R SOLO(PFL)
SOLO
ON
()
AFL-L AFL-R SOLO(PFL)
EFX SEND
LEFT-BUS
RIGHT-BUS
AUX-1
AUX-2
AFL L
AFL R
SOLO(PFL)
EFX SEND LOGIC
3c 5e 1a 4d 2b
INSERT
T
R
S
RN TN
ALT-3(L)
ALT-4(R) ALT-3(L) ALT-4(R)
ALT-4
ALT-3
ALT-4
ALT-3
AUX1
LEVEL
AUX2
LEVEL
ALT-3(L)
ALT-4(R)
ALT3-4
LEVEL
ALT 3-4 OUT
ALT-3(L)
T R S
ALT-4(R)
T R S
ALT 3-4 TO MIX
RIGHT-BUS LEFT-BUS
ALT 3-4
MAIN MIX CONTROL ROOM SOURCE
MAIN/ALT MAIN/ALT
1 2 1 2
POST
PRE
1 2 1 2
POST
PRE
POST
PRE
2TK
RIGHT
LEFT
LOGIC
LO
2.5K
3-BAND EQ
12K80
+/-15db
MID HILO
2.5K 2.5K
(LEVEL +4dBu/-10dBv)
MUTE/ALT3-4 LED
MUTE/ALT3-4 LED
2TK LEVEL
MAIN MIX LEVEL
(LEFT)
(RIGHT)
AMX180FX-USB
LEFT-BUS RIGHT-BUS
STEREO AUX RETURN 2
21
3
EFX TO AUX-1
21
3
RIGHT-BUS LEFT-BUS AUX-1 AUX-1
3c 5e 1a 4d 2b
LEFT
3c 5e 1a 4d 2b
RIGHT
AUX2 / DSP
STEREO AUX RETURN 1
3c 5e 1a 4d 2b
LEFT(MONO)
3c 5e 1a 4d 2b
RIGHT
AUX1 RETURN
-
+
T
R
S
RN TN
T
R
S
RN TN
T
R
S
RN TN
T
R
S
RN TN
-
+
-
+
-
+
RETURN
AUX2 / DSP
DSP BOARD
PRESETS
VARIATIONS
MUTE
DSP FOOTSWITCH
STEREO CHANNELS 11 STEREO CHANNELS 12
2
1 3
2
1 3
PHONES OUTPUT
LEFT METER
RIGHT METER
CONTROL ROOM OUTPUT
LEFT
T R S
RIGHT
T R S
PHONES
T R S
& PHONES
CONTROL ROOM
AFL L AFL R SOLO(PFL)
PFL LED
SOLO CTRL
SOLO ACTIVE
(LEVEL SET)
SOLO MODE
PFL
()
AFL
()
Vin L
ADC
Vin L
Vout L
DAC
Vout L
USB
PROTOCOL
CONTROLLER
USB MODULE
USB PORT TO PC
MAIN MIX LEFT MAIN MIX RIGHT
RIGHT-BUS LEFT-BUS
USB RECORD
MONO CHANNEL 1 MONO CHANNEL 2
2
1 3
2
1 3
USB PLAYBACK
2
1 3
2
1 3
3. BLOCK DIAGRAM
- 3 -

12345678910 11 12
A B C D
12
1110987654321
D
C B A
EQ HI
C65
18n(M) VR1
B50K
R50
6K8
VR3 B50K
R49
6K8
LO
R81
10K
C5
47u/25V
5 67
U1B
4580M
R177
1M
C137
22P
R1
1K1
VR2
B50K
R13
1K3
MID
R26
910R
C101
12n(M)
R25 910R
C114
33n(M) C113
33n(M)
C89
12n(M)
C77
18n(M)
C9
47u/25V
R140
6K8
VR5
W50K
AUX-1
R117
47K
R197
4K7
C161
2.2u/50V R57
6K8
TR2
3904
TR1
3904
R189
1K5
+VCC
LD3
RED
R133
680R 3
21
U1A
4580M
VR7A
10KD
PEAK
R221 15K
C141
22P
VR4
W50K
C13
47u/25V
R139
6K8
AUX-2
LEVEL
AUX-POST
R137
5K1
R138
5K1
LEFT-BUS
RIGHT-BUS
PAN
PGND1
AUX-PRE
80HZ
2.5K
1 2 3
J1
POST (PRE)
C1
47u/25V
EQ HI
12KHZ
C69
18n(M) VR29A
B50K
R62
6K8
VR31A B50K
R61 6K8
LO
R89
10K
C17
47u/25V
3 21
U5A
4580M
R181
1M
C145
22P
R5
1K1
VR30A
B50K
R17
1K3
MID
R33
910R
C105
12n(M)
R34 910R
C122
33n(M) C121
33n(M)
C93
12n(M)
C81
18n(M)
C18
47u/25V
R121 47K R209
4K7 C165
2.2u/50V R77
6K8
TR4
3904
TR3
3904
R193 1K5
+VCC
LD15 RED
R153
5K1 3
21
U6A
4580M
VR35B
10KD
PEAK
R225 22K
C153
22P
C33
47u/25V
LEVEL
BAL
PGND1
80HZ 2.5K
EQ HI
12KHZ
C73
18n(M) VR29B
B50K
R70
6K8
VR31B B50K
R69
6K8
LO
R93
10K
C25
47u/25V
5 67
U5B
4580M
R185
1M
C149
22P
R9
1K1
VR30B
B50K
R21
1K3
MID
R42 910R
C109
12n(M)
R41 910R
C130
33n(M) C129
33n(M)
C97
12n(M)
C82
18n(M)
C26
47u/25V
80HZ 2.5K
R97
7K5
R98
7K5
R154
5K1 5
67
U6B
4580M
VR35A 10KD
R226
22K
C154
22P
C34
47u/25V
LEVEL
R105
4K7
R106 4K7
21
3
SW2A
PS-42E85L
54
6
SW2B
PS-42E85L
87
9
SW2C
PS-42E85L
11 10
12
SW2D PS-42E85L
ALT-3 ALT-4
21
3
SW1A
PS-22E85L
21
3
SW3A
PS-42E85L
54
6
SW3B
PS-42E85L
87
9
SW3C
PS-42E85L
11 10
12
SW3D PS-42E85L
AFL-L AFL-R
R233
27K
R234
27K
AUX1 PRE/POST
SW2:MUTE/ALT3-4 SW3:SOLO,PFL
R85
17K4
SOLO(PFL)
D2
BAS316
LOGIC
LD2 YEL
(SOLO)
LD1
RED
-VCC
(MUTE/ALT3-4)
CH1
11 10
12
SW5D PS-42E85L
LD4
REDCH2
11 10
12
SW8D PS-42E85L
LD7
REDCH3
11 10
12
SW11D PS-42E85L
LD10
REDCH4
11 10
12
SW14D PS-42E85L
LD13
REDCH5/6
11 10
12
SW17D PS-42E85L
LD16
REDCH7/8
11 10
12
SW20D PS-42E85L
LD19
REDCH9/10
11 10
12
SW23D PS-42E85L
LD22
REDCH11/12
R125
2K2
-VCC
(LOGIC=2.0V or 0.5V)
EQ HI
C66
18n(M) VR8
B50K
R52
6K8
VR10 B50K
R51
6K8
LO
R82
10K
C6
47u/25V
5 67
U2B
4580M
R178
1M
C138
22P
R2
1K1
VR9
B50K
R14
1K3
MID
R28
910R
C102
12n(M)
R27 910R
C116
33n(M) C115
33n(M)
C90
12n(M)
C78
18n(M)
C10
47u/25V
R144
6K8
VR12
W50K
AUX-1
R118
47K
R198
4K7
C162
2.2u/50V R58
6K8
TR6
3904
TR5
3904
R190
1K5
+VCC
LD6
RED
R134
680R 3
21
U2A
4580M
VR14A
10KD
PEAK
R222 15K
C142
22P
VR11
W50K
C14
47u/25V
R143
6K8
AUX-2
LEVEL
AUX-POST
R141
5K1
R142
5K1
LEFT-BUS
RIGHT-BUS
PAN
PGND1
AUX-PRE
80HZ
2.5K
J2
POST (PRE)
C2
47u/25V
21
3
SW5A
PS-42E85L
54
6
SW5B
PS-42E85L
87
9
SW5C
PS-42E85L
ALT-3 ALT-4
21
3
SW4A
PS-22E85L
21
3
SW6A
PS-42E85L
54
6
SW6B
PS-42E85L
87
9
SW6C
PS-42E85L
11 10
12
SW6D PS-42E85L
AFL-L AFL-R
R235
27K
R236
27K
AUX1 PRE/POST
SW5:MUTE/ALT3-4 SW6:SOLO,PFL
R86
17K4
SOLO(PFL)
D4
BAS316
LOGIC
LD5 YEL
(SOLO)
R126
2K2
-VCC
(LOGIC=2.0V or 0.5V)
EQ HI
C67
18n(M) VR15
B50K
R54
6K8
VR17 B50K
R53
6K8
LO
R83
10K
C7
47u/25V
5 67
U3B
4580M
R179
1M
C139
22P
R3
1K1
VR16
B50K
R15
1K3
MID
R30
910R
C103
12n(M)
R29 910R
C118
33n(M) C117
33n(M)
C91
12n(M)
C79
18n(M)
C11
47u/25V
R148
6K8
VR19
W50K
AUX-1
R119
47K
R199
4K7
C163
2.2u/50V R59
6K8
TR10
3904
TR9
3904
R191
1K5
+VCC
LD9
RED
R135
680R 3
21
U3A
4580M
VR21A
10KD
PEAK
R223 15K
C143
22P
VR18
W50K
C15
47u/25V
R147
6K8
AUX-2
LEVEL
AUX-POST
R145
5K1
R146
5K1
LEFT-BUS
RIGHT-BUS
PAN
PGND1
AUX-PRE
80HZ
2.5K
J3
POST (PRE)
C3
47u/25V
21
3
SW8A
PS-42E85L
54
6
SW8B
PS-42E85L
87
9
SW8C
PS-42E85L
ALT-3 ALT-4
21
3
SW7A
PS-22E85L
21
3
SW9A
PS-42E85L
54
6
SW9B
PS-42E85L
87
9
SW9C
PS-42E85L
11 10
12
SW9D
PS-42E85L
AFL-L AFL-R
R237
27K
R238
27K
AUX1 PRE/POST
SW8:MUTE/ALT3-4 SW9:SOLO,PFL
R87
17K4
SOLO(PFL)
D6
BAS316
LOGIC
LD8
YEL
(SOLO)
R127
2K2
-VCC
(LOGIC=2.0V or 0.5V)
EQ HI
C68
18n(M) VR22
B50K
R56
6K8
VR24 B50K
R55
6K8
LO
R84
10K
C8
47u/25V
5 67
U4B
4580M
R180
1M
C140
22P
R4
1K1
VR23
B50K
R16
1K3
MID
R32
910R
C104
12n(M)
R31 910R
C120
33n(M) C119
33n(M)
C92
12n(M)
C80
18n(M)
C12
47u/25V
R152
6K8
VR26
W50K
AUX-1
R120
47K
R200
4K7
C164
2.2u/50V R60
6K8
TR16
3904
TR15
3904
R192
1K5
+VCC
LD12
RED
R136
680R 3
21
U4A
4580M
VR28A
10KD
PEAK
R224 15K
C144
22P
VR25
W50K
C16
47u/25V
R151
6K8
AUX-2
LEVEL
AUX-POST
R149
5K1
R150
5K1
LEFT-BUS
RIGHT-BUS
PAN
PGND1
AUX-PRE
80HZ
2.5K
J4
POST (PRE)
C4
47u/25V
21
3
SW11A
PS-42E85L
54
6
SW11B
PS-42E85L
87
9
SW11C
PS-42E85L
ALT-3 ALT-4
21
3
SW10A
PS-22E85L
21
3
SW12A
PS-42E85L
54
6
SW12B
PS-42E85L
87
9
SW12C
PS-42E85L
11 10
12
SW12D
PS-42E85L
AFL-L AFL-R
R239
27K
R240
27K
AUX1 PRE/POST
SW11:MUTE/ALT3-4 SW12:SOLO,PFL
R88
17K4
SOLO(PFL)
D8
BAS316
LOGIC
LD11
YEL
(SOLO)
R128
2K2
-VCC
(LOGIC=2.0V or 0.5V)
R161
5K1
R162
5K1
LEFT-BUS
RIGHT-BUS
21
3
SW14A
PS-42E85L
54
6
SW14B
PS-42E85L
ALT-3 ALT-4
21
3
SW15A
PS-42E85L
54
6
SW15B
PS-42E85L
AFL-L AFL-R
R241
27K
R242
27K
R164
5K1
VR33
W50K
AUX-1
VR32
W50K
R163
5K1
AUX-2
AUX-POST
AUX-PRE
J5
POST (PRE)
87
9
SW14C
PS-42E85L
21
3
SW13A
PS-22E85L
87
9
SW15C
PS-42E85L
AUX1 PRE/POST
R107
10K
SOLO(PFL)
11 10
12
SW15D
PS-42E85L D3
BAS316
LOGIC
LD14
YEL
(SOLO)
R129
2K2
-VCC
(LOGIC=2.0V or 0.5V)
SW14:MUTE/ALT3-4 SW15:SOLO,PFL
EQ HI
12KHZ
C70
18n(M) VR36A
B50K
R64
6K8
VR38A B50K
R63 6K8
LO
R90
10K
C19
47u/25V
3 21
U7A
4580M
R182
1M
C146
22P
R6
1K1
VR37A
B50K
R18
1K3
MID
R35
910R
C106
12n(M)
R36 910R
C124
33n(M) C123
33n(M)
C94
12n(M)
C83
18n(M)
C20
47u/25V
R122 47K R210
4K7 C166
2.2u/50V R78
6K8
TR8
3904
TR7
3904
R194 1K5
+VCC
LD18 RED
R155
5K1 3
21
U8A
4580M
VR42B
10KD
PEAK
R227 22K
C155
22P
C35
47u/25V
LEVEL
BAL
PGND1
80HZ 2.5K
EQ HI
12KHZ
C74
18n(M) VR36B
B50K
R72
6K8
VR38B B50K
R71
6K8
LO
R94
10K
C27
47u/25V
5 67
U7B
4580M
R186
1M
C150
22P
R10
1K1
VR37B
B50K
R22
1K3
MID
R44 910R
C110
12n(M)
R43 910R
C132
33n(M) C131
33n(M)
C98
12n(M)
C84
18n(M)
C28
47u/25V
80HZ 2.5K
R99
7K5
R100
7K5
R156
5K1 5
67
U8B
4580M
VR42A 10KD
R228
22K
C156
22P
C36
47u/25V
LEVEL
R108
4K7
R109 4K7
R165
5K1
R166
5K1
LEFT-BUS
RIGHT-BUS
21
3
SW17A
PS-42E85L
54
6
SW17B
PS-42E85L
ALT-3 ALT-4
21
3
SW18A
PS-42E85L
54
6
SW18B
PS-42E85L
AFL-L AFL-R
R243
27K
R244
27K
R168
5K1
VR40
W50K
AUX-1
VR39
W50K
R167
5K1
AUX-2
AUX-POST
AUX-PRE
J6
POST (PRE)
87
9
SW17C
PS-42E85L
21
3
SW16A
PS-22E85L
87
9
SW18C
PS-42E85L
AUX1 PRE/POST
R110
10K
SOLO(PFL)
11 10
12
SW18D
PS-42E85L D5
BAS316
LOGIC
LD17
YEL
(SOLO)
R130
2K2
-VCC
(LOGIC=2.0V or 0.5V)
SW17:MUTE/ALT3-4 SW18:SOLO,PFL
EQ HI
12KHZ
C71
18n(M) VR43A
B50K
R66
6K8
VR45A B50K
R65 6K8
LO
R91
10K
C21
47u/25V
3 21
U9A
4580M
R183
1M
C147
22P
R7
1K1
VR44A
B50K
R19
1K3
MID
R37
910R
C107
12n(M)
R38 910R
C126
33n(M) C125
33n(M)
C95
12n(M)
C85
18n(M)
C22
47u/25V
R123 47K R211
4K7 C167
2.2u/50V R79
6K8
TR12
3904
TR11
3904
R195 1K5
+VCC
LD21 RED
R157
5K1 3
21
U10A
4580M
VR49B
10KD
PEAK
R229 22K
C157
22P
C37
47u/25V
LEVEL
BAL
PGND1
80HZ 2.5K
EQ HI
12KHZ
C75
18n(M) VR43B
B50K
R74
6K8
VR45B B50K
R73
6K8
LO
R95
10K
C29
47u/25V
5 67
U9B
4580M
R187
1M
C151
22P
R11
1K1
VR44B
B50K
R23
1K3
MID
R46 910R
C111
12n(M)
R45 910R
C134
33n(M) C133
33n(M)
C99
12n(M)
C86
18n(M)
C30
47u/25V
80HZ 2.5K
R101
7K5
R102
7K5
R158
5K1 5
67
U10B
4580M
VR49A 10KD
R230
22K
C158
22P
C38
47u/25V
LEVEL
R111
4K7
R112 4K7
R169
5K1
R170
5K1
LEFT-BUS
RIGHT-BUS
21
3
SW20A
PS-42E85L
54
6
SW20B
PS-42E85L
ALT-3 ALT-4
21
3
SW21A
PS-42E85L
54
6
SW21B
PS-42E85L
AFL-L AFL-R
R245
27K
R246
27K
R172
5K1
VR47
W50K
AUX-1
VR46
W50K
R171
5K1
AUX-2
AUX-POST
AUX-PRE
J7
POST (PRE)
87
9
SW20C
PS-42E85L
21
3
SW19A
PS-22E85L
87
9
SW21C
PS-42E85L
AUX1 PRE/POST
R113
10K
SOLO(PFL)
11 10
12
SW21D PS-42E85L D7
BAS316
LOGIC
LD20
YEL
(SOLO)
R131
2K2
-VCC
(LOGIC=2.0V or 0.5V)
SW20:MUTE/ALT3-4 SW21:SOLO,PFL
EQ HI
12KHZ
C72
18n(M) VR50A
B50K
R68
6K8
VR52A B50K
R67 6K8
LO
R92
10K
C23
47u/25V
3 21
U11A
4580M
R184
1M
C148
22P
R8
1K1
VR51A
B50K
R20
1K3
MID
R39
910R
C108
12n(M)
R40 910R
C128
33n(M) C127
33n(M)
C96
12n(M)
C87
18n(M)
C24
47u/25V
R124 47K R212
4K7 C168
2.2u/50V R80
6K8
TR18
3904
TR17
3904
R196 1K5
+VCC
LD24 RED
R159
5K1 3
21
U12A
4580M
VR56B
10KD
PEAK
R231 22K
C159
22P
C39
47u/25V
LEVEL
BAL
PGND1
80HZ 2.5K
EQ HI
12KHZ
C76
18n(M) VR50B
B50K
R76
6K8
VR52B B50K
R75
6K8
LO
R96
10K
C31
47u/25V
5 67
U11B
4580M
R188
1M
C152
22P
R12
1K1
VR51B
B50K
R24
1K3
MID
R48 910R
C112
12n(M)
R47 910R
C136
33n(M) C135
33n(M)
C100
12n(M)
C88
18n(M)
C32
47u/25V
80HZ 2.5K
R103
7K5
R104
7K5
R160
5K1 5
67
U12B
4580M
VR56A 10KD
R232
22K
C160
22P
C40
47u/25V
LEVEL
R114
4K7
R115 4K7
R173
5K1
R174
5K1
LEFT-BUS
RIGHT-BUS
21
3
SW23A
PS-42E85L
54
6
SW23B
PS-42E85L
ALT-3 ALT-4
21
3
SW24A
PS-42E85L
54
6
SW24B
PS-42E85L
AFL-L AFL-R
R247
27K
R248
27K
R176
5K1
VR54
W50K
AUX-1
VR53
W50K
R175
5K1
AUX-2
AUX-POST
AUX-PRE
J8
POST (PRE)
87
9
SW23C
PS-42E85L
21
3
SW22A
PS-22E85L
87
9
SW24C
PS-42E85L
AUX1 PRE/POST
R116
10K
SOLO(PFL)
11 10
12
SW24D
PS-42E85L
D9
BAS316
LOGIC
LD23
YEL
(SOLO)
R132
2K2
-VCC
(LOGIC=2.0V or 0.5V)
SW23:MUTE/ALT3-4 SW23:SOLO,PFL
84
U3C
4580M
84
U6C
4580M
84
U2C
4580M
84
U5C
4580M
84
U8C
4580M
84
U11C
4580M
84
U12C
4580M
84
U9C
4580M
84
U1C
4580M
84
U4C
4580M
84
U7C
4580M
84
U10C
4580M
C41 100n
C42 100n
C43 100n
C46 100n
C44 100n
C47 100n
C45 100n
C48 100n
C49 100n
C52 100n
C50 100n
C53 100n
C51 100n
C54 100n
C55 100n
C57 100n
C56 100n
C58 100n
C59 100n
C62 100n
C60 100n
C63 100n
C61 100n
C64 100n
+VCC
-VCC
TR19
3906
R250
120R 1/4W
R249 510R
+VCC
CR-A
AMX180FXMN1-USB AMX180FXMN1-USB.S02 AMX180FXMN1-USB AMX180FXMN1-USB.S03
RTN-CH1 RTN-CH2 RTN-CH3 RTN-CH4
PRE-CH5
PRE-CH6
PRE-CH7 PRE-CH8 PRE-CH9
PRE-CH10 PRE-CH11 PRE-CH12
RTN-CH1 RTN-CH2 RTN-CH3 RTN-CH4
PRE-CH5
PRE-CH6
PRE-CH7 PRE-CH8 PRE-CH9 PRE-CH10 PRE-CH11 PRE-CH12
LOGIC LOGIC LOGIC
LOGIC
LOGIC LOGIC LOGIC LOGIC
AMX180FXMN1-USB AMX180FXMN1-USB.S01
VR6
B5K
R201 4K7 R202 4K7
VR13
B5K
R203 4K7 R204 4K7
VR20
B5K
R205 4K7 R206 4K7
VR27
B5K
R207 4K7 R208 4K7
VR34
B5K
R213 4K7 R214 4K7
VR41
B5K
R216 4K7 R215 4K7
VR48
B5K
R217 4K7 R218 4K7
VR55
B5K
R219 4K7 R220 4K7
AMX180FXMN1-USB(1/4)
R430 5K1
R428 7K68 R429 7K68
R436 5K1 R437 5K1
R435 7K68 R443 7K68
R444 5K1
R433 5K1
R431 5K1 R432 5K1
R434 5K1
R441 5K1
R438 5K1 R439 5K1
R442 5K1 R447 5K1 R448 5K1
R440 5K1 R445 5K1
R450 5K1 R451 5K1
R446 5K1 R449 5K1
CH1 CH2
R464 0R
3 21
U36A
4580M
R467
10K
C314
22P
C316
47u/25V
R465 10K
5 67
U36B
4580M
R468
10K
C315
22P
C317
47u/25V
R466 10K
84
U36C
4580M
C318 100n
C319 100n
04_1
4. SCHEMATIC DIAGRAM
- 4 -

1 2 3 4 5 6 78
A B C D
8
7654321
D
C B A
5 67
U13B
4580M
3 21
U13A
4580M
R251
10K
C169
22P
LEFT-BUS
RIGHT-BUS
C170
22P
R252
10K
C187
47u/25V
C188
47u/25V
VR62A 10KD
MAIN MIX
VR63A 10KD
MAIN MIX
LEFT
RIGHT
C206
47u/25V
R314
1K5 3
21
U22A
4580M
R313
2K
C186
22P
C212
47u/25V
R304
10K
R262
8K2
C205
47u/25V
R312
1K5 5
67
U22B
4580M
R311
2K
C185
22P
C211
47u/25V
R303
10K
R261
8K2
LEFT-BUS
RIGHT-BUS
2TK TO MIX
C251 100P
C252
100P
2TK-IN-L 2TK-IN-R
3 21
U16A
4580M
3 21
U17A
4580M
R253
27K
C171
22P
ALT-3 ALT-4
C172
22P
R254
27K
C189
47u/25V
C190
47u/25V
ALT 3-4
(ALT-3)
C243
47u/25V
ALT 3/4 OUT
C244
47u/25V
3 21
U18A
4580M
3 21
U19A
4580M
R267
26K1
C173
22P
AUX-1 AUX-2
C174
22P
R268
26K1
C195
47u/25V
C191
47u/25V
5 67
U18B
4580M
5 67
U19B
4580M
R271
36K
C179
22P
VR60
W50K
AUX1 SEND
VR61
W50K
R272
36K
C180
22P
C199
47u/25V
C200
47u/25V
R289 10K
R290 10K
AUX2 SEND
R279 8K2
R280
8K2
AUX-SEND1 AUX-SEND2
5 67
U16B
4580M
5 67
U17B
4580M
R269
36K
C177
22P
VR59B
W50K
VR59A
W50K
R270
36K
C178
22P
R277 6K2
R278
6K2
SW27A
PS-22E85L
SW27B
PS-22E85L
LEFT-BUS
R306
27K
RIGHT-BUS
R305
27K
(ALT3/4 TO MIX)
SW28A
PS-22E85L
SW28B
PS-22E85L
84
U18C
4580M
84
U17C
4580M
84
U20C
4580M
84
U21C
4580M
84
U13C
4580M
84
U16C
4580M
84
U19C
4580M
84
U22C
4580M
C217 100n
C219 100n
C222 100n
C225 100n
C223 100n
C226 100n
C227 100n
C230 100n
C228 100n
C231 100n
C229 100n
C232 100n
C234 100n
C237 100n
C235 100n
C238 100n
+VCC
-VCC
ALT3-L ALT4-R
MAINR MAINL
AUX-SEND1 AUX-SEND2
2TK-IN-L 2TK-IN-R
2TK TO CR-L 2TK TO CR-R
R287 10K R288 10K
VR65A
W50K
VR65B
W50K
2TK IN
R291 8K2
R307
22K
R294
8K2
R308
22K
VR58B
W50K
VR58A
W50K
3 21
U20A
4580M
5 67
U20B
4580M
R317
36K
C253
22P
C213
47u/25V
R263
19K6
R318
36K
C254
22P
C214
47u/25V
R264
19K6
R266
19K6
R265
19K6
AUX RETURN 1
R321
27K4
R322
27K4
EFX TO AUX1
AUX-1 AUX-1
LEFT-BUS
RIGHT-BUS
R298 8K2
R309
22K
R300
8K2
R310
22K
VR57B
W50K
VR57A
W50K
3 21
U21A
4580M
5 67
U21B
4580M
R319
36K
C255
22P
C215
47u/25V R315
20K
R320
36K
C256
22P
C216
47u/25V R316
20K
AUX RETURN 2
LEFT-BUS RIGHT-BUS
AUX-RTN1-L AUX-RTN1-R AUX-RTN2-R AUX-RTN2-L SW25A
PS-22E85L
SW25B
PS-22E85L
AUX-RTN1-L AUX-RTN1-R AUX-RTN2-R AUX-RTN2-L
AMX180FXMN1-USB(2/4)
R452 5K1 R453 5K1
R454 36K R455 36K
C209 47u/25V C210 47u/25V
R458 3K6 R459 3K6
5 67
U28B 4580M
3 21
U28A 4580M
84
U28C
4580M
C310 100n C311 100n
C312 22P C313 22P
C175
47u/25V
R259 680R
R255 10K
C176
47u/25V
R256 10K
R257 5K1
MAINL
R260 680R
R258 5K1
MAINR
- 5 -

1 2 3 4 5 6 78
A B C D
8
7654321
D
C B A
5 67
U23B
4580M
R376
20K
C285
22P C292
47u/25V
3 21
U23A
4580M
R426
17K4
C287
22P
R385
5K1
VR64B 10KD
CTRL ROOM
LEFT
CTRL-R-L
TR20
J112
R383
5K1
SW29A
PS-22E85L
SW30A
PS-22E85L
SW31A
PS-22E85L
MAIN MIX
ALT-3
2TK
R372
20K
R373
20K
R406
20K
R412
62K
R366
0R
R358
56K
R420
47K
R407
12K
R410
33K
LOGIC
R356 100K
R360
15K
R363
10K
+VCC
3 21
U26A
4580M
R380 220K
R361
15K
+VCC
R364
10K
C296 100n
D11
BAS316
R381
5K1
LD27
YEL
LD26
RED
21
3
SW26A
PS-42E85L PFL
SOLO
5 67
U25B
4580M
R378
68K
C283
22P
C290
47u/25V
AFL-L
R369
20K
5
4 6
SW26B
PS-42E85L
5 67
U26B
4580M
R379
68K
C284
22P
C291
47u/25V
AFL-R
R370
20K
8
7 9
SW26C
PS-42E85L
D12
BAS316
SOLO(PFL)
11 10
12
SW26D
PS-42E85L
R382
5K1
R371
20K C299
2.2u/50V
SW-FET
SW-FET
PFL-IN-L
PFL-IN-L PFL-IN-R
L-METER
TR21
J112
SW-FET
5 67
U24B
4580M
R377
20K
C286
22P C293
47u/25V
3 21
U24A
4580M
R427
17K4
C288
22P
R386
5K1
VR64A 10KD
CTRL ROOM
RIGHT
CTRL-R-R
TR22 J112
R384
5K1
SW29B
PS-22E85L
SW30B
PS-22E85L
SW31B
PS-22E85L
MAIN MIX
ALT-4
2TK
R374
20K
R375
20K
R408
20K
R413
62K
R367
0R
R359
56K
R421
47K
R409
12K
R411
33K
SW-FET
PFL-IN-R
R-METER
TR23
J112
SW-FET
TR24
J112
R357 100K
CTRL ROOM SOURCE
8
914
U31C
LM339
1
6
7
U31B
LM339
1
6
7
U30B
LM339
8
914
U30C
LM339
8
914
U33C
LM339
1
6
7
U33B
LM339
1
6
7
U32B
LM339
8
914
U32C
LM339
LD41
GR LD40
GR LD39
GR LD38
GR LD37
GR LD36
GR LD35
GR LD34
GR
R387
120R 1/4W
R391 120R R401
470R R404
330R R402
470R R405
330R R403
470R R414
510R R415
620R
+VCC
R390
56R
-VCC
PGND
10
11 13
U31D
LM339
5
42
U31A
LM339
5
42
U30A
LM339
10
11 13
U30D
LM339
10
11 13
U33D
LM339
5
42
U33A
LM339
5
42
U32A
LM339
10
11 13
U32D
LM339
LD53 GR LD52
GR LD51
GR LD50
GR LD49
GR LD48
GR LD47
GR LD46
GR
-VCC
LEFT METER
(-30) (-20) (-10) (-7) (-4) (-2) (0) (+2)
5 67
U27B
4580M
R399 36K
R393
0R0
R395
100K C297
47u/25V
PGND
10
11 13
U35D
LM339
5
42
U35A
LM339
5
42
U34A
LM339
10
11 13
U34D
LM339
LD45 GR LD44
GR LD43
YEL LD42
RED
8
914
U35C
LM339
1
6
7
U35B
LM339
1
6
7
U34B
LM339
8
914
U34C
LM339
LD33
GR LD32
GR LD31
YEL LD30
RED
R416 1K3 R417
2K R418
5K6 R419
8K2
TR13
3906
+VCC
D1A
DA204K
D1B
DA204K
TR14
3906
R392
120R 1/4W
R388 510R
R389
510R
R365
10K
PGND
3 21
U27A
4580M
R400 36K
R394
0R0
R396
100K C298
47u/25V
PGND
L-METER R-METER
312
U31E
LM339
312
U32E
LM339
312
U30E
LM339
312
U33E
LM339
312
U34E
LM339
84
U27C
4580M
C300
100n
C301
100n
R424
47R
R425
47R
C294
47u/25V
C295
47u/25V
+VCC
-VCC
PGND
LD28
RED
LD29
GR
R423
4K7
R422
2K
PGND PGND
PH LED
(+4) (+7) (+10) (+18)
PWR ON
PHANTOM
+VCC
312
U35E
LM339
R398
10K
R397
10K
PGNDPGND
CR-A
84
U25C
4580M
84
U24C
4580M
84
U23C
4580M
84
U26C
4580M
C302 100n
C303 100n
C304 100n
C307 100n
C305 100n
C308 100n
C306 100n
C309 100n
+VCC
-VCC
3 21
U25A
4580M
R362
10K
C282
22P
C289
47u/25V
CTRL-R-L CTRL-R-R
LOGIC
SW-FET
SW-FET SW-FET SW-FET SW-FET
PFL-IN-R PFL-IN-L
PFL-IN-R PFL-IN-L
R368
20K
MAINL MAINR
ALT3 TO CR-L ALT4 TO CR-R
2TK TO CR-R 2TK TO CR-L
SOLO(PFL)
AFL-L AFL-R
ACTIVE
D13 RLS4148
D14
RLS4148
D16 RLS4148
D17
RLS4148
AMX180FXMN1-USB(3/4)
PRE-CH5 PRE-CH6 PRE-CH7 PRE-CH8
PRE-CH9 PRE-CH10 PRE-CH11 PRE-CH12
+VCC
-VCC
GND
GND
MAINL MAINR
AUX-RTN1-L AUX-RTN1-R
AUX-SEND1 AUX-SEND2
RTN-CH1 RTN-CH2 RTN-CH3 RTN-CH4
AUX-RTN2-L AUX-RTN2-R
1 2 3 4 5 6 7 8 9 10 11 12 13 14
CN1 CON14
1 2 3 4 5 6 7 8 9 10 11 12 13 14
CN2 CON14
EFXRTN-R EFXRTN-L 1
2
CN17 CON2
CTRL-R-L CTRL-R-R 2TK-IN-L 2TK-IN-R
PH LED
ALT4-R ALT3-L
2TK-IN-L 2TK-IN-R
CTRL-R-L CTRL-R-R
FOOTSW
PGND
+5VD
DGND
GND
ALT3 TO CR-L ALT4 TO CR-R
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
CN3 CON16
1 2 3 4 5
CN5 CON5
CH1 CH2
LEFT-BUS
RIGHT-BUS
CH1 CH2 LEFT-BUS RIGHT-BUS
- 6 -

1234
A B C D
4
321
D
C B A
AMX180FXMN1-USB(4/4)
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
CN4 CON16
C261_1 C262_1 TR400_C
+5VD
CN11_16 U49_1 C263_1
PGND DGND
LD401_2 C260_2 R335_2 R331_2
12 34 56 78 910 1112 1314 1516
CN11
HEADER 8X2 1
2 3 4
COM
EN2
SDB161PVB15FS
1 2 3 4
COM
EN1
SDB161PVB15FS
1 2
3 4
5 6
7 8
AR1 680R*4
1 2
3 4
5 6
7 8
AR2 680R*4
DGND
DGND
+5VD
DGND
+5VD 1
2 4 8
1 2 4 8 PRESETVARIATION
CN11_16 R331_2 R335_2 C260_2
C261
4.7uF
C262
4.7uF
3
5
7
RL1B RY-5W-K
4
6
8
RL1C RY-5W-K
C263
4.7uF
AUX-SEND2
(MUTE) (MUTE)
LD401 RED
PEAK(FLICKER) MUTE(GLOW)
C261_1 C262_1
C263_1
R352
220R
R353
220R
1 2 3
SW401A PS-22E85NL
DGND (MUTE)
12
RL1A
RY-5W-K
+5VD
C275
100N
D20
RLS4148
FOOTSW
TR400_C U49_1
LD401_2
+VCC GND -VCC
+VCC
JP1
PGND
EFXRTN-L EFXRTN-R
R274 10K
TR26 3904
DGND DGND
TR27
3906
R273 10K
DGND DGND
R275 47K
C181 330uF/16V
+5VD
TR25
3904
R276 20K
R281
470R
DGND DGND
- 7 -

1 2 3 4 5 6 78
A B C D
8
7654321
D
C B A
D1
1N4002
D2
1N4002
ZD1 1N5261
C169
100u/100V
D4
1N4002
D3
1N4002
C170
100u/100V
TR1
7815A
C174
2200u/25V
PGND
C176
220u/25V
D5
RLS4148
C173
2200u/25V C177
220u/25V
D6 RLS4148
C175
100u/100V
PGND
R207
390K
C171
100u/100V
R208 47K
R206
4R7
R209
20K
C172
47u/100V
TR4
TIP122
+VCC
-VCC
TR3
7915A
(47V 0.5W)
CN5 AC IN SW10
CN2.5-2P-90
PGND
R205 0R
PHANTOM
SW11 CN2.5-2P-180
TR2
7805
PGND
+5VD
C178
1000uF/16V
PGNDDGND
R204 0R
PHANTOM PWR
3c 5e 1a
4d 2b
X28
JY-6351G-02-250
T
R
S
RN TN
INSERT1
3c 5e 1a
4d 2b
X31
JY-6351G-02-250
T
R
S
RN TN
INSERT2
3c 5e 1a
4d 2b
X34
JY-6351G-02-250
T
R
S
RN TN
INSERT3
3c 5e 1a
4d 2b
X35
JY-6351G-02-250
T
R
S
RN TN
INSERT4
3c 5e 1a
4d 2b
X30
JY-6351G-02-250
T
R
S
RN TN MAIN R (UNBAL)
3c 5e 1a
4d 2b
X33
JY-6351G-02-250
T
R
S
RN TN MAIN L (UNBAL)
R186
120R
R184
120R
R190
120R
R185
120R 3c
5e 1a
4d 2b
X29
JY-6351G-02-250
T
R
S
RN TN
ALT-3 (LEFT)
3c 5e 1a
4d 2b
X32
JY-6351G-02-250
T
R
S
RN TN
ALT-4 (RIGHT)
R183
120R
R181
120R
R189
120R
R182
120R
R180 120R
R187
120R
R188
120R
R191
120R
3c 5e 1a
4d 2b
X36
JY-6351G-02-250
FOOTSW
RTN-CH1 INS-CH1 RTN-CH2 INS-CH2 RTN-CH3 INS-CH3 RTN-CH4 INS-CH4
ALT3-L ALT4-R
AMX180FXPU1-USB AMX180FXPU1-USB.S01
3 21
U18A 4580M
5 67
U18B 4580M
C7 22P
C9 22P
R34 5K1
R35 5K1
R210 10K R211 10K
C179 47u/25V C180 47u/25V
R3 5K1
R4 5K1
ALT3 TO CR-L ALT4 TO CR-R
AMX180FXPU1-USB(1/2)
1 2 3 4 5 6 7 8 9
10 11 12
CN6 USB MIXER
AGND +5VD USB_GND
D- D+ VINL VINR VOUTL VOUTR
1 2 3 4
CN4 USB B TYPE
USB_GND
D- D+
1 2 3 4 5
CN8 CON5
R101
10K
R214 10K C101 22P
3 21
U20A 4580M
R215
10K
C105 22P
5 67
U20B 4580M
R103
10K
3 2
1
U21A 4580M
R221
56K
C164 22P R104
10K0
5 6
7
U21B 4580M
R222
56K
C165 22P R212
10K0
C197 47uF/25V C199 47uF/25V
CH11 CH12
LEFT-BUS
RIGHT-BUS
MAINL MAINR
CH1 CH2
R227
8K06
R228
8K06
VINL
VINR
CH1 CH2
LEFT-BUS
RIGHT-BUS
VOUTL VOUTR
C184 100n C188 100n
84
U20C 4580M
C189 100n C190 100n
84
U21C 4580M
+VCC
-VCC
CH1 CH2 LEFT-BUS RIGHT-BUS
2
1 3SW12A
SW-2WAY
5
4 6SW12B
SW-2WAY
USB RECORD
VINR
VINL
VINL VINR
USB PLAYBACK
VOUTL VOUTR
2
1 3SW13A
SW-2WAY
5
4 6SW13B
SW-2WAY
VOUTL VOUTR
USB MIXER
MAINL MAINR
PH PWR
R230 100K
GND GND
3 21
U24A 4580M
3 21
U23A
4580M
R253
15K0
C211
33P
R246 11K
R252
15K0
C210
33P
R245 11k
C218 47u/25V
C217 47u/25V
R261 22K
R260 22K
(BALANCED)
5 67
U24B 4580M
C216 33P
C220 47u/25V
R254 18K
R262 22K R257 68R0
MAIN OUT
LEFT
RIGHT
5 67
U23B 4580M
C215
33P
C219 47u/25V
R251 18K
R259 22K R255 68R0
R250 18K
C214 33P
R249 18K
C213 33P
R258 68R0
R244
11K
R241 10K0 R242 10K0
R248 18K
C212 33P
R247 18K
C209 33P
R237 10K0 R238 10K0
R256 68R0
R243
11K (BALANCED)
2 1 3
X37
JY-5030-030G
2 1 3
X38
JY-5030-030G
MAIN OUT
RIGHT
LEFT
7 8 9
P
SW9C
PS-42E85L
4 5 6
P
SW9B
PS-42E85L
1 2 3
SW9A
PS-42E85L
10 11 12
P
SW9D
PS-42E85L
R192 120R
R193
120R
R200 5K1
R194
120R
R198
120R
R202 5K1
R195
120R
R196
120R
R201 5K1
R197
120R
R199
120R
R203
5K1
MAIN-R-3 MAIN-L-3
MAIN-R-2
MAIN-L-2
84
U24C
4580M
84
U23C
4580M
C205 100n
C206 100n
C207 100n
C208 100n
+VCC
-VCC
PH PWR-LED
PH PWR-LED
TR5 3904
R229
47K
+VCCPH LED
D28 5817 D27 5817
AGND +VCC -VCC
R99 0R
- 8 -

12345678910 11 12
A B C D
12
1110987654321
D
C B A
84
U3C
4580M
84
U6C
4580M
84
U2C
4580M
C139 100n
C137
100n
C140
100n
C138
100n
+VCC
-VCC
C141 100n
C142 100n
84
U5C
4580M
84
U8C
4580M
84
U11C
4580M
84
U12C
4580M
84
U16C
4580M
C143 100n
C144
100n
C145 100n
C146 100n
C147 100n
C148
100n
C149 100n
C150 100n
C152 100n
C153
100n
C154 100n
C155 100n
C156 100n
C157 100n
C158 100n
C159
100n
C160 100n
C161 100n
84
U1C
4580M
84
U4C
4580M
84
U7C
4580M
84
U17C
4580M
3c 5e 1a 4d 2b
X4 JY-6351G-02-250
T
R
S
RN TN
LINE IN 5
3c 5e 1a 4d 2b
X5 JY-6351G-02-250
T
R
S
RN TN
LEFT(MONO)
RIGHT
5 67
U13B
4580M
R96
2K20 C51
22P
R93
2K20
C66
22P
R79 10K
C121
100P
R90 10K
C124 100P
3 21
U13A
4580M
R97
2K20 C68
22P
R94
2K20
C64
22P
R89 10K
C122
100P
R91 10K
C123
100P
R82 10K0
R83 10K0
R147 10K0 R148 10K0
3c 5e 1a 4d 2b
X7
JY-6351G-02-250
T
R
S
RN TN
3c 5e 1a 4d 2b
X8
JY-6351G-02-250
T
R
S
RN TN
5 67
U16B 4580M
R114
2K20 C56
22P C108
47u/25V
R110 2K20
C69 22P
R84 10K
C127
100P
R106
10K
C129 100P
3 21
U16A
4580M
R113 2K20 C72
22P C109
47u/25V
R112 2K20
C71 22P
R107 10K
C131 100P
R108
10K
C132
100P
R149
20K0
R151
20K0
3c 5e 1a 4d 2b
X9
JY-6351G-02-250
T
R
S
RN TN
3c 5e 1a 4d 2b
X12
JY-6351G-02-250
T
R
S
RN TN
5 67
U17B 4580M
R115 2K20 C73
22P C110
47u/25V
R111 2K20
C70
22P
R105 10K
C128
100P
R109 10K
C130 100P
3 21
U17A
4580M
R125 2K20 C81
22P C115
47u/25V
R124 2K20
C80
22P
R122 10K
C135 100P
R123
10K
C136
100P
R150
R155
LINE IN 6
LINE IN 9
LEFT(MONO)
RIGHT
LINE IN 10 LINE IN 11
LEFT(MONO)
RIGHT
LINE IN 12
3c 5e 1a 4d 2b
X13
JY-6351G-02-250
STEREO AUX
LEFT 1
3c 5e 1a 4d 2b
X14
JY-6351G-02-250
RIGHT 1
RETURN2
STEREO AUX
RETURN1
3c 5e 1a 4d 2b
X15
JY-6351G-02-250
3c 5e 1a 4d 2b
X16
JY-6351G-02-250
RIGHT 2
LEFT 2
(MONO / MASTER)
3c 5e 1a 4d 2b
X17
JY-6351G-02-250
AUX SEND1
R165 120R
R164 120R
3c 5e 1a 4d 2b
X18
JY-6351G-02-250
AUX SEND2
R166
120R
R169
120R
T
R
S
RN TN
T
R
S
RN TN
3c 5e 1a 4d 2b
X20
JY-6351G-02-250
R168 120R
R171
120R CTRL ROOM OUT
3c 5e 1a 4d 2b
X19
JY-6351G-02-250
R170 120R
R167
120R
LEFT
RIGHT
CTRL-R-L CTRL-R-R
12
R176
1K
R177
1K
L(WHITE)
R(RED)
TAPE IN TAPE OUT
1 4 2 5
3
6
X27
SCP6873NS3232
2TK-IN-L 2TK-IN-R MAINR MAINL
5 67
U9B
BA15218N
5 67
U10B
BA15218N
C120
22P
R127
10K
R174
120R
3c 5e 1a 4d 2b
X21
JY-6351G-02-250
R175
120R
PHONES
R173
120R
R172 120R
3 21
U9A
BA15218N
3 21
U10A
BA15218N
R126
10K
C119
22P
CTRL-R-L CTRL-R-R
R159
5K1
SW7A
PS-22E85L
R160
5K1
SW7B
PS-22E85L
R161
5K1
SW8A
PS-22E85L
R163
5K1
SW8B
PS-22E85L
R156
5K1
SW5A
PS-22E85L
R157 5K1
SW5B
PS-22E85L
C106
47u/25V
C107
47u/25V
84
U15C
4580M
84
U13C
4580M
(LEVEL +4dBu/-10dBv) (LEVEL +4dBu/-10dBv) (LEVEL +4dBu/-10dBv)
(LEVEL +4dBu/-10dBv) (LEVEL +4dBu/-10dBv) (LEVEL +4dBu/-10dBv)
PRE-CH5
PRE-CH6
PRE-CH9
PRE-CH10 PRE-CH11 PRE-CH12
C162 100n
C163 100n
C166 100n
C167 100n
84
U9C
BA15218N
84
U10C
BA15218N
C113
47u/25V
C116
47u/25V
C151 100n
C168 100n
+VCC -VCC
3c 5e 1a 4d 2b
X6 JY-6351G-02-250
T
R
S
RN TN
3c 5e 1a 4d 2b
X11 JY-6351G-02-250
T
R
S
RN TN
5 67
U15B 4580M
R98 2K20 C67
22P C103
47u/25V
R95
2K20
C65 22P
R88
10K
C125
100P
R92
10K
C126 100P
3 21
U15A
4580M
R121
2K20 C79
22P C114
47u/25V
R120 2K20
C78 22P
R118 10K
C133 100P
R119 10K
C134
100P
R146
20K0
R154
20K0
LINE IN 7
LEFT(MONO)
RIGHT
LINE IN 8
R158
5K1
SW6A
PS-22E85L
R162
5K1
SW6B
PS-22E85L
(LEVEL +4dBu/-10dBv) (LEVEL +4dBu/-10dBv)
PRE-CH7 PRE-CH8
VR5
Z10K
C2
470P
C21
22u/35V R32
11K0
LINE IN1
MIC 1
C31
47u/50V
R41
3K60
R21
6.81K 1%
PH PWR
C3
470P
R22
6.81K 1%
C33
47u/50V
C6
47P
R31
11K0
R43
3K60
C23
22u/35V
R2
51K
R1
51K C5
470P
2 1 3 4
X22
SMC-6.02
R56 5K11
R58
5K11
C47
22P
C46
22P R77
10K
R51
27R
C41
1000u/10V
R76 10K
R59
5K11 C48
22P
R62
5K11
C50
22P
C94 47u/25V
R140
20K
3c 5e 1a 4d 2b
X1
JY-6351G-02-250
R128
62K
R132
1K3
R142
20K
C96
47u/25V
C82
0.22u/50V
C83
0.22u/50V C84
0.22u/50V
R136
6K8
1 2 3
SW1A
PS-22E85L
LO CUT
VR6
Z10K
C1
470P C22
22u/35V
R33 11K0
LINE IN2
MIC 2
C32
47u/50V
R42
3K60
R23
6.81K 1%
PH PWR
C4
470P
R28
6.81K 1%
C36
47u/50V
C16
47P
R36 11K0
R46
3K60
C27
22u/35V
R7
51K
R6
51K C13
470P
2 1 3 4
X25
SMC-6.02
R57
5K11
R68 5K11
C60
22P
C58
22P R86
10K
R54 27R
C43
1000u/10V
R78 10K
R60
5K11
C49
22P R61
5K11
C63
22P
C95
47u/25V
R141
20K
3c 5e 1a 4d 2b
X2
JY-6351G-02-250
R130
62K
R133
1K3
R145 20K
C100
47u/25V
C86
0.22u/50V
C87
0.22u/50V
C89
0.22u/50V
R137
6K8
1 2 3
SW2A
PS-22E85L
LO CUT
VR7
Z10K
C11
470P C26
22u/35V
R38 11K0
LINE IN3
MIC 3
C37
47u/50V
R47
3K60
R26
6.81K 1%
PH PWR
C12
470P
R27
6.81K 1%
C38
47u/50V
C15
47P
R37 11K0 R48
3K60
C28
22u/35V
R8
51K
R5
51K C14
470P
2 1 3 4
X24
SMC-6.02
R69 5K11
R67 5K11
C59
22P
C57
22P
R85 10K
R53 27R
C44
1000u/10V
R87 10K
R70
5K11 C61
22P
R71
5K11
C62
22P
C98
47u/25V
R143
20K
3c 5e 1a 4d 2b
X3
JY-6351G-02-250
R129
62K
R134
1K3
R144 20K
C99
47u/25V
C85
0.22u/50V
C88
0.22u/50V
C90
0.22u/50V
R138
6K8
1 2 3
SW3A
PS-22E85L
LO CUT
VR8
Z10K
C17
470P C29
22u/35V
R40 11K0
LINE IN4
MIC 4
C39
47u/50V
R49
3K60
R30
6.81K 1%
PH PWR
C18
470P
R29
6.81K 1%
C40
47u/50V
C20
47P
R39 11K0 R50
3K60
C30
22u/35V
R10
51K
R9
51K C19
470P
2 1 3 4
X26
SMC-6.02
R73 5K11
R72 5K11
C75
22P
C74
22P
R116 10K
R55 27R
C45
1000u/10V
R117 10K
R74
5K11 C76
22P
R75
5K11
C77
22P
C111
47u/25V
R152
20K
3c 5e 1a 4d 2b
X10
JY-6351G-02-250
R131
62K
R135
1K3
R153 20K
C112
47u/25V
C91
0.22u/50V
C92
0.22u/50V
C93
0.22u/50V
R139
6K8
1 2 3
SW4A
PS-22E85L
LO CUT
5 67
U2B
4580M
3 21
U1A
4580M
5 67
U1B
4580M
3 21
U2A
4580M
3 21
U3A
4580M
5 67
U3B
4580M
3 21
U4A
4580M
5 67
U4B
4580M
3 21
U5A
4580M
5 67
U5B
4580M
3 21
U6A
4580M
5 67
U6B
4580M
3 21
U7A
4580M
5 67
U7B
4580M
3 21
U8A
4580M
5 67
U8B
4580M
R13
47R
R12
47R
R11
47R
R14
47R
R17 47R R18 47R R19
47R
R20 47R
VR9
Z10K
MIC 5
C34
47u/50V
R44
3K60
R24
6.81K 1%
PH PWR
C8
470P
R25
6.81K 1%
C35
47u/50V
C10
47P
R45
3K60
2 1 3 4
X23
SMC-6.02
R63 5K11
R64
5K11
C53
22P
C52
22P R81
10K
R52
27R
C42
1000u/10V
R80 10K
R65
5K11 C54
22P
R66
5K11
C55
22P
C97 47u/25V
5 67
U12B 4580M
3 21
U11A 4580M
3 21
U12A
4580M
R16
47R
R15
47R
PRE-CH5 PRE-CH6 PRE-CH7 PRE-CH8
PRE-CH9 PRE-CH10 PRE-CH11 PRE-CH12
+VCC
-VCC
GND
GND CTRL-R-L
CTRL-R-R 2TK-IN-L 2TK-IN-R
PH LED
ALT4-R
ALT3-L
AUX-RTN1-L
AUX-RTN1-R
AUX-SEND1 AUX-SEND2
2TK-IN-L 2TK-IN-R
CTRL-R-L
CTRL-R-R
FOOTSW
PGND
RTN-CH1
INS-CH1
RTN-CH2
INS-CH2
RTN-CH3
INS-CH3
RTN-CH4
INS-CH4
MAINR MAINL
AUX-RTN2-L
AUX-RTN2-R
AUX-RTN2-L AUX-RTN2-R
AUX-SEND1 AUX-SEND2
AUX-RTN1-R
AUX-RTN1-L
+5VD
DGND
1 2 3 4 5 6 7 8 9 10 11 12 13 14
CN1 CON14
C191
100P
C183
47u/25V
C192
100P
C185
47u/25V
C193
100P
C186
47u/25V
C194
100P
C187
47u/25V
R178 R179
GND
EFXRTN-L
EFXRTN-R
EFXRTN-R
EFXRTN-L
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
CN2 CON16
84
U18C
4580M
C24 100n C25 100n
ALT3 TO CR-L
ALT4 TO CR-R
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
CN3 CON16
AMX180FXPU1-USB(2/2)
R100 20K
CH11 CH12
2
1 3
SW14A PS-22E85L
5
4 6
SW14B PS-22E85L
D11 4148 D7
4148
D8 4148 D9
4148
+VCC -VCC +VCC -VCC
D12 4148 D10
4148
D17 4148 D18
4148
+VCC -VCC +VCC -VCC
D22 4148 D19
4148
D20 4148 D21
4148
+VCC -VCC +VCC -VCC
D26 4148 D23
4148
D24 4148 D25
4148
+VCC -VCC +VCC -VCC
D16 4148 D13
4148
D14 4148 D15
4148
+VCC -VCC +VCC -VCC
R239
20K
R240
20K
C203 47u/25V C204 47u/25V
MAINL MAINR
R271 2K20
R273
2K20
R263 510R
R277
2K20
R274
2K20
R265 510R
R276 2K20
R275
2K20
R266 510R
R283 2K20
R269 510R
R284
2K20
R272 2K20
R278 2K20 R264 510R
R281 2K20
R279 2K20 R267 510R
R282 2K20
R280 2K20 R268 510R
R286 2K20
R285 2K20 R270 510R
- 9 -

12345678
A B C D
8
7654321
D
C B A
C329 22P C345
1.5nF 2.5%
5 6
7
U44B
4580M
R399 10K
R420 100R
R422
3K3 R397
10K
R398
10K
3 2
1
U44A
4580M
R400
10K
C331 22P C347
1.5nF 2.5%
5 6
7
U45B
4580M
R406 10K
R421 100R
R423 3K3 R402
10K
R405
10K
3 2
1
U45A
4580M
R408
10K
5 67
U46B
4580M
3 21
U46A
4580M
C346
1.5nF 2.5% R404
10K
R403 10K
C332 22P
R407 10K
C330
22P
R424 2K2
R401 10K
(MUTE) (MUTE)
CLK 4
J2
S
5
R
1
Q
6
Q
7K3
U48A 74HC109
+5VD R413
10K
D7 BAS316
12
U49A 74HC14
C352 1uF
DGND
+5VD
R414 10K
D15
BAS316
C353 1uF
DGND
R410 10K
R426 220R
R419 7K5
84
U44C
4580M
84
U46C
4580M
84
U45C
4580M
C336 100N
C337 100N
C338 100N
C339
100N
+VCC
-VCC
3 4
U49B 74HC14
5 6
U49C 74HC14
8 9
U49D
74HC14
12 13
U49F
74HC14
147
U49G
74HC14
DGND
CLK 12
J14
S
11
R
15
Q
10
Q
9K13
U48B 74HC109
DGND
168
U48C
74HC109 C341
100N
C340
100N +5VD
DGND
C351 10uF
DSP-PRE
DGND
3 2
1
U47A
LM393
5 6
7
U47B LM393
R416 4K7
+VCC
R418 1K
C334 100N
R417 1M R425
2M2
R431 820K
D10A
RB400D
PEAK(FLICKER) MUTE(GLOW)
84
U47C
LM393
TR17 3904
DGND
R411
10K R412
10K
DGND
OUT
3RS 4
TG 2 TH 6
CTR
5
DS
7
U43A NE555
C333
100N
DGND
+5VD
R415 47K
C350 10uF
DGND
81
U43B
NE555
C349 33P C348 33P
D16 DA202K
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
CN1 CN1-2.0-16P
GND +VCC -VCC NetC342_1 NetC344_1 NetTR16_C +5VD NetCN6_16 NetU49_1 NetC343_1 PGND DGND NetLD54_2 NetC332_2 NetR408_2 NetR400_2
ZD1 2.4V ZD2
2.4V
R409 10K
TR16
3904
DGNDDGND
R1 0R
- 10 -

1 2 34
A B C D
4
321
D
C B A
D+
1
D-
2
VBUS
3
DGND
4
HID0
5
HID1
6
HID2
7
SEL0
8
SEL1
9
VCCCI
10
AGNDC
11
VINL
12
VINR
13
VCOM
14 VOUTR 15
VOUTL 16 VCCP1I 17 AGNDP 18 VCCP2I 19
XTO 20
XTI 21
AGNDX 22
VCCXI 23
DIN 24
DOUT 25
DGND 26
VDDI 27
SSPDN 28
U1 PCM2902
1 2
R4 22R R3 22R
R5 1K5
USB_GND
DGND
C6 10uF C5 10uF
AGND
C4 10uF C3 10uF
C13 1uF
C12 1uF C11 1uF
X1
12MHz
C8 22P
DGND DGND
C9 22P
C10 1uF
DGND
DGND
C2 10uF C1 10uF
C7
100uF
R2 0R
+5V
USB_GND
R6 10M
AGND USB_GND
VINL VINR VOUTL VOUTR
AMX-USB
R9 10R
R7 1K5
C26 1n
3 21
U2A 4580M
R14 3K9
C24 4.7nF
R12 12K
R10 4K7 C20
10uF
C14 330P
AGND AGND
R18 100R
R8 1K5
C27 1n
5 67
U2B 4580M
R15 3K9
C25 4.7nF
R13 12K
R11 4K7 C21
10uF
C16 330P
AGND AGND
R19 100R
1 2 3 4 5 6 7 8 9
10 11 12
CN1 CON12
D- D+
+5V
C28 220P
3 2
1
U3A 4580M
R24
18K
C29 220P
5 6
7
U3B 4580M
R25 18K
R16 3K9 R17 3K9
R22 27K R23 27K
C18 1.8nF
AGND
C15 1.8nF
AGND
R20 100R R21 100R
C19 330P
AGND
C17 330P
AGND
C23
10uF
C22
10uF
+VCC -VCC
C30 100n C32 100n
+VCC
-VCC
C31 100n C33 100n
84
U2C
4580M
84
U3C
4580M
AGND
AGND
IN
IN
GG
OUT OUT
TR1 A1117
C34 100n
R26 3K16 R1 1K82
3.6V~3.8V
DGND
L1 BLM21
C35 100n
USB_GND
- 11 -

12345678
A B C D
8
7654321
D
C B A
AMX-180FX USB
PCB AMX180FXMN1-USB： PCB AMX180FXPU1-USB：
CN3
SW10
CN8 CN2
CN2 CN17
18VAC~
TG00041 AC/120V
POWER SW
AC IN
P
H
A
N
T
O
M
S
W
CN3
SW11
CN5
CN1 CN1
Voltage Converter
5. WIRING DIAGRAM
- 12 -

6. PCB LAYOUT
-13 -

PCB:AMX-USB B Top Layer Top Overlay Top Solder
PCB:AMX-USB Bottom Layer Bottom Overlay Bottom Solder
- 14 -

PCB:AMX180FXMN1-USB Top Layer Top Overlay Top Solder
PCB:AMX180FXMN1-USB Bottom Layer Bottom Overlay Bottom Solder
- 15 -

PCB:AMX180FXPU1-USB Bottom Layrt Botttom Overlay Bottom Solder
PCB:AMX180FXPU1-USB Top Layrt Top Overlay Top Solder
- 16 -

PCB:DSP-PRE Bottom Layer Bottom Overlay Bottom Solder
PCB:DSP-PRE Top Layer Top Overlay Top Solder
- 17 -

7. TEST PROCEDURE
1. Instruments:
1). AP (Audio precision)
2). Dual oscillograph
3). voltmeter
4).USB connector line
2. Instruments Setting:
1). AP output: 0dBu 1KHz SINE wave, Load out 40ΩBal-Gnd or Load out 20ΩUnbal-Gnd.
2). AP input: Load 100KΩBNC-Float or Load 100KΩXLR-Bal BW: 22Hz~22KHz. Fltr:
A-Weighting (1207).
3. Visual Check: check the surface of the AMX-180FX, and be sure it is OK; check the
potentiometer knob, and be sure it has no frication.
4. Functional Test:
1). After the surface check is OK, input the proper AC power voltage, open the maim
power switch, the POWER led will light up. Then open the PHANTOM switch, the
PHANTOM led will light up. The second and third pin on each MIC output socket {MIC1,
MIC2, MIC3, MIC4, MIC (MONO)} has 48V PHANTOM voltage which is tested by
voltmeter, and close this switch (notice: we should close this switch for the following
test , or the instrument will be damaged).
2). Put the MAIN MIX LEVEL, PHONES/CONTROL ROOM, EQ, AUX, PAN, and BAL
knob in 0; put the TRIM, AUX RTN1 and AUX RTN2 in min, the entire keys is OFF.
(when test the LEVEL of CH1~CH2, we should turn the LEVEL to max)
3). AP input 0dBu, connect the balanced input to MIC {MIC1, MIC2, MIC3, MIC4, MIC
(MONO)} respectively; when the balanced output is in MAIN MIX OUTPUT, the output
is +5dBu (±2dB) THD+N<0.005%.
- 18 -