Alto PM-12 DRAGONFLY User manual


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

MODEL: PM-12/16
Version 2.0

CONTENTS
1. Introduction……………………………………………………………2
2. Specification…………………………………………………………..3
3. Block Diagram………………………………………………………...4
4. Schematic Diagram…………………………………………………..6
5. Wiring Diagram……………………………………………………….36
6. PCB Layout……………………………………………………………38
7. Test Procedure & Test Result……………………………………...64
8. Exploded Views & Mechanical Part List………………………….69
9. BOM……………………………………………………………………..75
1

1. Introduction
Thank you very much for expressing your confidence in ▲LTO products by purchasing ▲LTO
PM-12/16 Dragonfly multi-Channel Mixing Console with Digital Effects. The PM-12/16 are
professional compact mixer, which provides the state of the art switching power and advanced
digital amplifier technology specifically. You will get the smooth, accurate more natural and open
sound from this apparatus, it is really ideal for large gigs, recording and fixed PA installations.
The PM-12/16 Dragonfly multi-Channel Mixing Console with Digital Effects are packed with some
key features that can not be found in other consoles of its size: mono (these are provided with
ultra low is provided with warm, natural EQ (mono channels are equipped with 3-band MID
sweep EQ; stereo channels are equipped with 4-band fixed frequency EQ); 24 bits digital stereo
effect processor with 256 presets (16 presets ×16 variations); built-in digital power amplifier;
highly accurate 12-segment bar graph meters; subgroups output ets…
lDragonfly digital amplifier technology, offering high power and a very dynamic sound.
lExtremely high efficiency means the amplifier is so compact that the console is no larger
and barely and heavier than an equivalent passive console.
lBuilt-in the state of the art switching power.
lMIC input channels with gold plated XLRs and balanced LINE inputs.
lStereo input channels with balanced TRS jacks.
lUltra-low noise discrete MIC preamps with +48V phantom power.
lExtremely high headroom offering more dynamic range
l60mm high precision faders.
lEach input channel with Mute, SOLO function, overload & signal present LEDs and low cut
filters(except for stereo channel).
lSUB1-2, SUB3-4 and MAIN L-R signal assignment switch.
l4AUX sends per channel: 2 PRE/POST faders switch-able for monitoring application effects
& sound processor input; 2POST faders for internal digital DFX or as external send.
l4-band fixed EQ on stereo line channels.
l3-band EQ with swept mid on microphone channels.
lChannel inserts on each mono channel plus main mix insert for flexible connection of
outboard equipment.
l24-bit digital stereo effect processor with 256 effects(16 presets×16 variations)
lStereo 9-band graphic EQ.
lTNC socket for connecting lamp.
lControl room/phones matrix.
l2-track recording IN/OUT
lHighly accurate 12 segment output level meters.
l2×300W(4Ω)
l6.3ψjack + 4 way speaker
2

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12345678910 11 12
A
B
C
D
12
1110987654321
D
C
B
A
CH2-CH12 IDENTICAL TO CH1
2
1
3
CH1
+48V
3-BAND EQ
12K100Hz-8kHz80
HI PASS
SG/OL
LEFT-BUS RIGHT-BUS AUX1 AUX2
RIGHT-BUS
LEFT-BUS
AUX1
AUX2
STEREO INPUT CHANNELS (CH13-14)
LEFT-BUS
RIGHT-BUS
AUX1
AUX4
MAIN OUT
LEFT-BUS
RIGHT-BUS
TAPE IN
RIGHT
2TK
2TK
LEFT METER
RIGHT METER
75Hz
+/-15db
4-BAND EQ
12K50080
+/-15db
MAIN MIX
MAIN MIX LEFT
T
R
S
MAIN MIX RIGHT
T
R
S
PHONE B
T
R
S
LEVEL
PHONES
LEFT
TAPE OUT
2
1
3
2
1
3
LEVEL
STEREO AUX RTN1 3c
5e
1a
4d
2b
3c
5e
1a
4d
2b
LEVEL
-
+
T
R
S
RN
TN
T
R
S
RN
TN
PAN
PHANTOM
CH1
GAIN
-
+
POWER
-
+
LO (FREQ) HI
AUX2
AUX1
FADER
POST
PRE
BALANCE
FADER
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:0~45dB
LINE IN TRIM:+15dB~-30dB
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 AUX1 AUX2 AFL-L AFL-R SOLO(PFL) DFX SEND
AFL L
AFL R
SOLO(PFL) PFL LED
LOGIC
SOLO CTRL
SOLO ACTIVE
(LEVEL SET)
SOLO MODE
PFL
()
AFL
()
3c
5e
1a
4d
2b
INSERT T
R
S
RN
TN
SUB1 SUB2 SUB1
SUB2
SUB2
SUB1
AUX SEND1
LEVEL
AUX SEND 4
LEVEL
+4dB/MIC
+4dB/MIC
SUB1
LEVEL
SUB OUT
SUB1
T
R
S
SUB1 TO MIX
RIGHT-BUS
LEFT-BUS
SUB1/2
MAIN MIX
CONTROL ROOM SOURCE
ASSIGN
2TK
RIGHT
LEFT
MID
LO M-H HIL-M
3K
12K50080 3K
SUB3 SUB4
SUB3 SUB4 AUX3 AUX4
SUB4
SUB3
AUX3 AUX4
MUTE
AUX4
AUX3
AUX3
AUX4
-20dB=SG(FLICKER)
+15dB=OL(GLOW)
RIGHT-BUS
LEFT-BUS
SUB2
SUB1
ASSIGN
SUB4
SUB3
AUX2
AUX2
AUX1
POST
PRE
AUX4
AUX3
AUX3
AUX4
SOLO LED
SOLO LED
-20dB=SG(FLICKER)
+15dB=OL(GLOW)
MUTE
MONITOR
AUX1
AUX1
DFX TO
RIGHT-BUS
STEREO AUX RTN2 3c
5e
1a
4d
2b
3c
5e
1a
4d
2b
LEVEL
-
+
T
R
S
RN
TN
T
R
S
RN
TN -
+
MONITOR
DFX TO
AUX2
LEFT-BUS
STEREO AUX RTN3 3c
5e
1a
4d
2b
3c
5e
1a
4d
2b
LEVEL
-
+
T
R
S
RN
TN
T
R
S
RN
TN -
+
STEREO AUX RTN4 3c
5e
1a
4d
2b
3c
5e
1a
4d
2b
LEVEL
-
+
T
R
S
RN
TN
T
R
S
RN
TN -
+
ASSIGN TO
C-R/PHONES
CTRL/L CTRL/R
SOLO
ON
()
AFL-L
AFL-R
SOLO(PFL)
SOLO LED
RIGHT-BUS
LEFT-BUS
SUB2
SUB1
AUX RTN4
SUB4
SUB3
RIGHT-BUS
LEFT-BUS
CTRL-R-R
CTRL-R-L
(AUX SEND 2/3 IDENTICAL)
AFL-L
AFL-R
SOLO(PFL)
AFL-L
AFL-R
SOLO(PFL)
SOLO
ON
()
SOLO
ON
()
3c
5e
1a
4d
2b
MAIN INSERT
T
L
S
RN
TN
3c
5e
1a
4d
2b
MAIN INSERT
T
R
S
RN
TN
3c
5e
1a
4d
2b
MONO OUTPUT
T
R
S
RN
TN
MONO LEVEL
3c
5e
1a
4d
2b
AUX/DFX SEND
T
R
S
RN
TN
3c
5e
1a
4d
2b
AUX SEND
T
R
S
RN
TN AUX SEND 1/2/3
AUX SEND 4
2TK TO MAIN
2TK TO MAIN
SUB1
SUBMIX 2 3 4 IDENTICAL TOSUB1
(TRIM)
4-BAND EQ
+/-15db
MIC IN
LINE IN
CTRL ROOM OUTPUT
LEFT
T
R
S
RIGHT
T
R
S
PHONES OUTPUT
PHONE A
T
R
S
LEVEL
CTRL ROOM
SUB3/4
AFL-L
AFL-R
SOLO(PFL)
CTRL/L CTRL/R
FROM SUB2
FROM SUB3
FROM SUB4
DSP BOARD
PRESETS
VARIATIONS
MUTE
DSP FOOTSWITCH
FX OUT L
FX OUT R
CTRL-R-R
CTRL-R-L
DFX SEND
DFX SEND
SG/OL
LEFT(MONO)
RIGHT
LEFT(MONO)
RIGHT
LEFT(MONO)
RIGHT
LEFT(MONO)
RIGHT
AUX RETURN
SOLO
ASSIGN TO
RIGHT-BUS
LEFT-BUS
GEQ
GEQ
EQ ON
PM16MAP.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
15-Jan-2005 TSB.
ALTO MIXING CONSOLE
11of
PM-16 BLOCK DIAGRAM VER050115 A3
LOGIC
AUX2
AUX1
DFX RETURN TO
ALTO PM-16
BLOCK DIAGRAM
3c
5e
1a
4d
2b SUB1 INSERT
T
S
RN
TN
IDENTICAL TO SUB1 INSERTSUBINSERT 2 3 4
DFX OUT T
R
S
R
LIMITER
R AMP
L AMP
L SPEAKER OUT
R SPEAKER OUT
CH15-16 IDENTICAL TO CH13-14
3. Black Diagram
4

12345678910 11 12
A
B
C
D
12
1110987654321
D
C
B
A
CH2-CH8 IDENTICAL TO CH1
2
1
3
CH1
+48V
3-BAND EQ
12K100Hz-8kHz80
HI PASS
SG/OL
LEFT-BUS RIGHT-BUS AUX1 AUX2
RIGHT-BUS
LEFT-BUS
AUX1
AUX2
STEREO INPUT CHANNELS (CH9-10)
LEFT-BUS
RIGHT-BUS
AUX1
AUX4
MAIN OUT
LEFT-BUS
RIGHT-BUS
TAPE IN
RIGHT
2TK
2TK
LEFT METER
RIGHT METER
75Hz
+/-15db
4-BAND EQ
12K50080
+/-15db
MAIN MIX
MAIN MIX LEFT
T
R
S
MAIN MIX RIGHT
T
R
S
PHONE B
T
R
S
LEVEL
PHONES
LEFT
TAPE OUT
2
1
3
2
1
3
LEVEL
STEREO AUX RTN1 3c
5e
1a
4d
2b
3c
5e
1a
4d
2b
LEVEL
-
+
T
R
S
RN
TN
T
R
S
RN
TN
PAN
PHANTOM
CH1
GAIN
-
+
POWER
-
+
LO (FREQ) HI
AUX2
AUX1
FADER
POST
PRE
BALANCE
FADER
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
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 AUX1 AUX2 AFL-L AFL-R SOLO(PFL) DFX SEND
AFL L
AFL R
SOLO(PFL) PFL LED
LOGIC
SOLO CTRL
SOLO ACTIVE
(LEVEL SET)
SOLO MODE
PFL
()
AFL
()
3c
5e
1a
4d
2b
INSERT T
R
S
RN
TN
SUB1 SUB2 SUB1
SUB2
SUB2
SUB1
AUX SEND1
LEVEL
AUX SEND 4
LEVEL
+4dB/MIC
+4dB/MIC
SUB1
LEVEL
SUB OUT
SUB1
T
R
S
SUB1 TO MIX
RIGHT-BUS
LEFT-BUS
SUB1/2
MAIN MIX
CONTROL ROOM SOURCE
ASSIGN
2TK
RIGHT
LEFT
MID
LO M-H HIL-M
3K
12K50080 3K
SUB3 SUB4
SUB3 SUB4 AUX3 AUX4
SUB4
SUB3
AUX3 AUX4
MUTE
AUX4
AUX3
AUX3
AUX4
-20dB=SG(FLICKER)
+15dB=OL(GLOW)
RIGHT-BUS
LEFT-BUS
SUB2
SUB1
ASSIGN
SUB4
SUB3
AUX2
AUX2
AUX1
POST
PRE
AUX4
AUX3
AUX3
AUX4
SOLO LED
SOLO LED
-20dB=SG(FLICKER)
+15dB=OL(GLOW)
MUTE
MONITOR
AUX1
AUX1
DFX TO
RIGHT-BUS
STEREO AUX RTN2 3c
5e
1a
4d
2b
3c
5e
1a
4d
2b
LEVEL
-
+
T
R
S
RN
TN
T
R
S
RN
TN -
+
MONITOR
DFX TO
AUX2
LEFT-BUS
STEREO AUX RTN3 3c
5e
1a
4d
2b
3c
5e
1a
4d
2b
LEVEL
-
+
T
R
S
RN
TN
T
R
S
RN
TN -
+
STEREO AUX RTN4 3c
5e
1a
4d
2b
3c
5e
1a
4d
2b
LEVEL
-
+
T
R
S
RN
TN
T
R
S
RN
TN -
+
ASSIGN TO
C-R/PHONES
CTRL/L CTRL/R
SOLO
ON
()
AFL-L
AFL-R
SOLO(PFL)
SOLO LED
RIGHT-BUS
LEFT-BUS
SUB2
SUB1
AUX RTN4
SUB4
SUB3
RIGHT-BUS
LEFT-BUS
CTRL-R-R
CTRL-R-L
(AUX SEND 2/3 IDENTICAL)
AFL-L
AFL-R
SOLO(PFL)
AFL-L
AFL-R
SOLO(PFL)
SOLO
ON
()
SOLO
ON
()
3c
5e
1a
4d
2b
MAIN INSERT
T
L
S
RN
TN
3c
5e
1a
4d
2b
MAIN INSERT
T
R
S
RN
TN
3c
5e
1a
4d
2b
MONO OUTPUT
T
R
S
RN
TN
MONO LEVEL
3c
5e
1a
4d
2b
AUX/DFX SEND
T
R
S
RN
TN
3c
5e
1a
4d
2b
AUX SEND
T
R
S
RN
TN AUX SEND 1/2/3
AUX SEND 4
2TK TO MAIN
2TK TO MAIN
SUB1
SUBMIX 2 3 4 IDENTICAL TO SUB1
(TRIM)
4-BAND EQ
+/-15db
MIC IN
LINE IN
CTRL ROOM OUTPUT
LEFT
T
R
S
RIGHT
T
R
S
PHONES OUTPUT
PHONE A
T
R
S
LEVEL
CTRL ROOM
SUB3/4
AFL-L
AFL-R
SOLO(PFL)
CTRL/L CTRL/R
FROM SUB2
FROM SUB3
FROM SUB4
DSP BOARD
PRESETS
VARIATIONS
MUTE
DSP FOOTSWITCH
FX OUT L
FX OUT R
CTRL-R-R
CTRL-R-L
DFX SEND
DFX SEND
SG/OL
LEFT(MONO)
RIGHT
LEFT(MONO)
RIGHT
LEFT(MONO)
RIGHT
LEFT(MONO)
RIGHT
AUX RETURN
SOLO
ASSIGN TO
RIGHT-BUS
LEFT-BUS
GEQ
GEQ
EQ ON
PM12MAP.Sch
Titel
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File:
Date: Drawn By: Sheet
RevisionModel No:
12-Jan-2004 BAO.
ALTO MIXING CONSOLE
11of
PM-12 BLOCK DIAGRAM VER031126 A3
LOGIC
AUX2
AUX1
DFX RETURN TO
ALTO PM-12
BLOCK DIAGRAM
3c
5e
1a
4d
2b SUB1 INSERT
T
S
RN
TN
IDENTICAL TO SUB1 INSERTSUB INSERT 2 3 4
DFX OUT T
R
S
R
LIMITER
R AMP
L AMP
L SPEAKER OUT
R SPEAKER OUT
CH11-12 IDENTICAL TO CH9-10
5

1 2 3 4 5 6 78
A
B
C
D
8
7654321
D
C
B
A
R46
4R7
R47
4R7
C38
1n
C34
1n
C44
1000u/10V
R54
4R7
VR1
O10K
R101
1K50
R11
2K49 3
21
U2A
4580M
R124
5K11
C50
22P
C99
47u/25V
5
67
U2B
4580M
R157
62K
R153
1K3
R66
20K
R65
20K
C100
47u/25V
C86
0.22u/50V
C85
0.22u/50V
C93
0.22u/50V
R199
6K8
LO CUT
2
1
3
4
X1
JY-5042-030G
3c
5e
1a
4d
2b
X2
JY-6351G-02-250
T
R
S
RN
TN
C21
330P
C1
10N
R83
470R
R12
2K49
C11
47u/63V
C12
47u/63V
R93
6K34
R94
6K34
C27
22u/35V
C26
22u/35V
R2
6K81
R1
6K81
3
21
U4A
4580M
R128
5K11
C54
22P
C101
47u/25V
5
67
U4B
4580M
R158
62K
R154
1K3
R68
20K
R67
20K
C102
47u/25V
C88
0.22u/50V
C87
0.22u/50V
C94
0.22u/50V
R200
6K8
2
1
3
4
X3
JY-5042-030G
3c
5e
1a
4d
2b
X4
JY-6351G-02-250
T
R
S
RN
TN
3
21
U6A
4580M
R132
5K11
C58
22P
C103
47u/25V
5
67
U6B
4580M
R159
62K
R155
1K3
R70
20K
R69
20K
C104
47u/25V
C90
0.22u/50V
C89
0.22u/50V
C95
0.22u/50V
R201
6K8
2
1
3
4
X5
JY-5042-030G
3c
5e
1a
4d
2b
X6
JY-6351G-02-250
T
R
S
RN
TN
3
21
U8A
4580M
R136
5K11
C62
22P
C105
47u/25V
5
67
U8B
4580M
R160
62K
R156
1K3
R72
20K
R71
20K
C106
47u/25V
C92
0.22u/50V
C91
0.22u/50V
C96
0.22u/50V
R202
6K8
2
1
3
4
X7
JY-5042-030G
3c
5e
1a
4d
2b
X8
JY-6351G-02-250
T
R
S
RN
TN
LINE IN1
LINE IN2
LINE IN3
LINE IN4
MIC 1
MIC 2
MIC 3
MIC 4
PH PWR
TR1
HR
TR16
A1316
R102
1K50
-VCC
+VCC
R20
2K49
R23
2K49
C5
10N
R87
470R
TR6
HR
TR20
A1316
-VCC
+VCC
3
21
U1A
4580M
5
67
U1B
4580M
C51
22P
C52
22P
R125
5K11
R126
5K11
R22
2K49
-VCC
R21
2K49
TR5
HR
+VCC
R19
2K49
D1
BAS316
+VCC
R61
20K
-VCC
R143
10K0
R144
10K0
R123
5K11
C49
22P
R48
4R7
R49
4R7
C39
1n
C35
1n
C45
1000u/10V
R55
4R7
VR2
O10K
R103
1K50
R13
2K49
C22
330P
C2
10N
R84
470R
R14
2K49
C13
47u/63V
C14
47u/63V
R95
6K34
R96
6K34
C29
22u/35V
C28
22u/35V
R4
6K81
R3
6K81
PH PWR
TR2
HR
TR17
A1316
R104
1K50
-VCC
+VCC
R25
2K49
R28
2K49
C6
10N
R88
470R
TR8
HR
TR21
A1316
-VCC
+VCC
3
21
U3A
4580M
5
67
U3B
4580M
C55
22P
C56
22P
R129
5K11
R130
5K11
R27
2K49
-VCC
R26
2K49
TR7
HR
+VCC
R24
2K49
D2
BAS316
+VCC
R62
20K
-VCC
R145
10K0
R146
10K0
R127
5K11
C53
22P
R50
4R7
R51
4R7
C40
1n
C36
1n
C46
1000u/10V
R56
4R7
VR3
O10K
R105
1K50
R15
2K49
C23
330P
C3
10N
R85
470R
R16
2K49
C15
47u/63V
C16
47u/63V
R97
6K34
R98
6K34
C31
22u/35V
C30
22u/35V
R6
6K81
R5
6K81
PH PWR
TR3
HR
TR18
A1316
R106
1K50
-VCC
+VCC
R30
2K49
R33
2K49
C7
10N
R89
470R
TR10
HR
TR22
A1316
-VCC
+VCC
3
21
U5A
4580M
5
67
U5B
4580M
C59
22P
C60
22P
R133
5K11
R134
5K11
R32
2K49
-VCC
R31
2K49
TR9
HR
+VCC
R29
2K49
D3
BAS316
+VCC
R63
20K
-VCC
R147
10K0
R148
10K0
R131
5K11
C57
22P
R52
4R7
R53
4R7
C41
1n
C37
1n
C47
1000u/10V
R57
4R7
VR4
O10K
R107
1K50
R17
2K49
C24
330P
C4
10N
R86
470R
R18
2K49
C17
47u/63V
C18
47u/63V
R99
6K34
R100
6K34
C33
22u/35V
C32
22u/35V
R8
6K81
R7
6K81
PH PWR
TR4
HR
TR19
A1316
R108
1K50
-VCC
+VCC
R35
2K49
R38
2K49
C8
10N
R90
470R
TR12
HR
TR23
A1316
-VCC
+VCC
3
21
U7A
4580M
5
67
U7B
4580M
C63
22P
C64
22P
R137
5K11
R138
5K11
R37
2K49
-VCC
R36
2K49
TR11
HR
+VCC
R34
2K49
D4
BAS316
+VCC
R64
20K
-VCC
R149
10K0
R150
10K0
R135
5K11
C61
22P
MIC GAIN=0~-60dB
LINE IN GAIN=-15~-40dB
PM16PU1.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
15-Jan-2005 TSB.
INPUT STAGE ( CH1-CH4)
11of
ALTO PM16 VER050115
A3
PCB# PM16PU1.PCB
SW1A
PS-22E85L
SW1B
PS-22E85L
LO CUT
SW2A
PS-22E85L
SW2B
PS-22E85L
LO CUT
SW3A
PS-22E85L
SW3B
PS-22E85L
LO CUT
SW4A
PS-22E85L
SW4B
PS-22E85L
PRECH1
PRECH2
PRECH3
PRECH4
84
U3C
4580M
84
U6C
4580M
84
U2C
4580M
C121
100N
C120
100N
C123
100N
C122
100N
C124
100N
C132
100N
84
U5C
4580M
84
U8C
4580M
C125
100N
C133
100N
C126
100N
C134
100N
C127
100N
C135
100N
C128
100N
C136
100N
C129
100N
C137
100N
84
U1C
4580M
84
U4C
4580M
84
U7C
4580M
+VCC
-VCC
PM16PU1
3c
5e
1a
4d
2b
X9
JY-6351G-02-250
T
R
S
RN
TN
INSERT1
INS1
R82
120R
3c
5e
1a
4d
2b
X10
JY-6351G-02-250
T
R
S
RN
TN
INSERT2
INS2
R75
120R
3c
5e
1a
4d
2b
X11
JY-6351G-02-250
T
R
S
RN
TN
INSERT3
INS3
R78
120R
3c
5e
1a
4d
2b
X12
JY-6351G-02-250
T
R
S
RN
TN
INSERT4
INS4
R80
120R
PRECH1
PRECH2
PRECH3
PRECH4
3c
5e
1a
4d
2b
X17
JY-6351G-02-250
DIRECT1
R203
120R
R204
120R
T
R
S
RN
TN
DIR-OUT1
3c
5e
1a
4d
2b
X18
JY-6351G-02-250
DIRECT2
R205
120R
R206
120R
T
R
S
RN
TN
DIR-OUT2
3c
5e
1a
4d
2b
X19
JY-6351G-02-250
DIRECT3
R207
120R
R208
120R
T
R
S
RN
TN
DIR-OUT3
3c
5e
1a
4d
2b
X20
JY-6351G-02-250
DIRECT4
R209
120R
R210
120R
T
R
S
RN
TN
DIR-OUT4
1
2
3
4
5
6
7
8
9
10
11
12
CN1
2.0-12P
(TO PM16MN1)
DIR-OUT1 GND
GND
GND
GND
-VCC GND
+VCC
-VCC
DIR-OUT1
PRECH2
PRECH1
DIR-OUT2
+VCC
DIR-OUT2 GND
1
2
3
4
5
6
7
8
9
10
11
12
CN2
2.0-12P
(TO PM16MN1)
DIR-OUT3 GND
GND
GND
GND
-VCC GND
+VCC
-VCC
DIR-OUT3
PRECH4
PRECH3
DIR-OUT4
+VCC
DIR-OUT4 GND
1
2
3
4
CN3
3.9-4P
(TO PM12PU2)
+VCC
-VCC
PH PWR
1
2
3
4
CN4
3.9-4P
(TO PM12PU1)
4. Schematic Diagram
6

1 2 34
A
B
C
D
4
321
D
C
B
A
PM16MN1.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
15-Jan-2005 KEVIN LIN.
MAIN INPUT STAGE
40of
ALTO PM16 VER030319
A4
PCB# PM16MN1.PCB
PM16MN1
CH1
CH1.SCH
CH2
CH2.SCH
CH3
CH3.SCH
CH4
CH4.SCH
84
U3_1C
4580M
C19_1
100n
C18_1
100n +RVCC
-RVCC
84
U3_3C
4580M
C19_3
100n
C18_3
100n R1
47R
C3
47uF
R2
47R
C4
47uF
C1
47uF
C2
47uF PGND
+PVCC
-PVCC
PGNDPGND
1
2
3
4
5
6
7
8
9
10
11
12
CN1
2.0-12P
(TO PM16PU1)
DIR-OUT1 GND
GND
GND
GND
-VCC GND
+VCC
-VCC
DIR-OUT1
PRECH2
PRECH1
DIR-OUT2
+VCC
DIR-OUT2 GND
1
2
3
4
5
6
7
8
9
10
11
12
CN2
2.0-12P
(TO PM16PU1)
DIR-OUT3 GND
GND
GND
GND
-VCC GND
+VCC
-VCC
DIR-OUT3
PRECH4
PRECH3
DIR-OUT4
+VCC
DIR-OUT4 GND
(TO PM12MN2)
AUX1
AUX3
AUX4
AUX2
LEFT-BUS
RIGHT-BUS
SUB1
SUB2
SOLO(PFL)
LOGIC
SUB3
SUB4
AFL-L
AFL-R
-RVCC
+RVCC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CN4
CON14
1
2
3
4
CN3
CON4
(TO PM12MN1)
AUX1
AUX3
AUX4
AUX2
LEFT-BUS
RIGHT-BUS
SUB1
SUB2
SOLO(PFL)
LOGIC
SUB3
SUB4
AFL-L
AFL-R
-RVCC
+RVCC
PGND
PGND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CN6
CON14
1
2
3
4
CN5
CON4
PGND
PGND
7

12345678
A
B
C
D
8
7654321
D
C
B
A
R18_1
5K1
VR7_1
W50K
AUX1
R8_1
5K1
5
67
U2_1B
4580M
R20_1
10K
C9_1
22P
VR5_1
W50K
C4_1
47uF
R16_1
5K1
AUX3
AUX-POST
R9_1
5K1
R10_1
5K1
LEFT-BUS
RIGHT-BUS
PAN
AUX-PRE
CH1.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
15-Jan-2005 KEVIN LIN.
MAIN INPUT STAGE
41of
ALTO PM16 VER030319
A3
21
3
SW5_1A
PS-22E85L
54
6
SW5_1B
PS-22E85L
21
3
SW1_1A
PS-22E85L
54
6
SW1_1B
PS-22E85L
21
3
SW3_1A
PS-22E85L
54
6
SW3_1B
PS-22E85L
54
6
SW6_1B
PS-42E85L
21
3
SW6_1A
PS-42E85L
SUB1
SUB2
R12_1
5K1
R13_1
5K1
AUX1/2 PRE/POST
R4_1
10K
SOLO(PFL)
D1_1
BAS316
LOGIC
LD3_1
YEL
(SOLO)
R23_1
2K2
-RVCC
(LOGIC=2.0V or 0.5V)
84
U2_1C
4580M
84
U1_1C
4580M
C13_1
100n
C14_1
100n
C15_1
100n
C16_1
100n
+VCC
-VCC
LOGIC
PCB# PM16MN1.PCB
EQ HI (12K)
C7_1
6.8n(M) VR1_1
B50K
R25_1
5K6
VR4_1
B50K
R24_1
5K6 LO (80Hz)
R3_1
10K
3
21
U2_1A
4580M
R7_1
1M
C6_1
22P
R5_1
3K9
VR2_1
B50K MID (FREQ=100Hz-8K)
C11_1
33n(M) C12_1
33n(M)
C8_1
6.8n(M)
C3_1
47uF
C2_1
47uF
PRECH1 PRECH1
3
21
U1_1A
4580M
5
67
U1_1B
4580M
R1_1
10K R2_1 10K
C5_1 22P
C10_1
152(M)
R11_1
5K1
R6_1
3K
VR3_1B
500KC
VR3_1A
500KC
R22_1
6K5
C1_1
682(M)
R21_1
6K2
PM16MN1 (CH1)
21
3
SW4_1A
PS-22E85L
54
6
SW4_1B
PS-22E85L
SUB3
SUB4
R14_1
5K1
R15_1
5K1
87
9
SW6_1C
PS-42E85L
11 10
12
SW6_1D
PS-42E85L
AFL-L
AFL-R
R27_1
6K8
R28_1
6K8
VR8_1
W50K
R17_1
5K1
AUX4
AUX-POST
R19_1
5K1
AUX2
VR6_1
W50K
AUX-PRE
2
1
3
SW2_1A
PS-22E85L-2
LD2_1
RED
R26_1
3K3
+RVCC
DIR-OUT1
MUTE
C17_1
100n
84
U4_1C
LM393
R36_1
4K7
+RVCC
R34_1
10K
R33_1
10K
R38_1
10K
R29_1
100K
R31_1
100K C20_1
1uF R30_1
8K2
PGND PGND
PGND
PGND
LD4_1
LED-2P
TR1_1
HR
R32_1
82R
1
2
3
4
8
U4_1A
393
5
67
U4_1B
393 R39_1
27K
R51_1
1K
3
21
U3_1A
4580M
PGND
綠紅
D2_1
4148
D3_1
4148
C22_1
1uF
PGND
D4_1
4148
PGND
+RVCC
TR3_1
7002
R35_1
10K
C21_1
470P
VR10_1A
10KD
5
4
6
SW2_1B
PS-22E85L-2
R40_1
5K1 VR9_1
W50K
R41_1
4K7
R42_1
4K7
LEVEL
PGND PGND
+RVCC
PGND
PGND
8

12345678
A
B
C
D
8
7654321
D
C
B
A
R18_2
5K1
VR7_2
W50K
AUX1
R8_2
5K1
5
67
U2_2B
4580M
R20_2
10K
C9_2
22P
VR5_2
W50K
C4_2
47uF
R16_2
5K1
AUX3
LEVEL
AUX-POST
R9_2
5K1
R10_2
5K1
LEFT-BUS
RIGHT-BUS
PAN
AUX-PRE
CH2.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
15-Jan-2005 KEVIN LIN.
MAIN INPUT STAGE
42of
ALTO PM16 VER030319
A3
21
3
SW5_2A
PS-22E85L
54
6
SW5_2B
PS-22E85L
21
3
SW1_2A
PS-22E85L
54
6
SW1_2B
PS-22E85L
21
3
SW3_2A
PS-22E85L
54
6
SW3_2B
PS-22E85L
54
6
SW6_2B
PS-42E85L
21
3
SW6_2A
PS-42E85L
SUB1
SUB2
R12_2
5K1
R13_2
5K1
AUX1/2 PRE/POST
R4_2
10K
SOLO(PFL)
D1_2
BAS316
LOGIC
LD3_2
YEL
(SOLO)
R23_2
2K2
-RVCC
(LOGIC=2.0V or 0.5V)
84
U2_2C
4580M
84
U1_2C
4580M
C13_2
100n
C14_2
100n
C15_2
100n
C16_2
100n
+VCC
-VCC
LOGIC
PCB# PM16MN1.PCB
EQ HI (12K)
C7_2
6.8n(M) VR1_2
B50K
R25_2
5K6
VR4_2
B50K
R24_2
5K6 LO (80Hz)
R3_2
10K
3
21
U2_2A
4580M
R7_2
1M
C6_2
22P
R5_2
3K9
VR2_2
B50K MID (FREQ=100Hz-8K)
C11_2
33n(M) C12_2
33n(M)
C8_2
6.8n(M)
C3_2
47uF
C2_2
47uF
PRECH2 PRECH2
3
21
U1_2A
4580M
5
67
U1_2B
4580M
R1_2
10K R2_2 10K
C5_2 22P
C10_2
152(M)
R11_2
5K1
R6_2
3K
VR3_2B
500KC
VR3_2A
500KC
R22_2
6K5
C1_2
682(M)
R21_2
6K2
PM16MN1 (CH2)
21
3
SW4_2A
PS-22E85L
54
6
SW4_2B
PS-22E85L
SUB3
SUB4
R14_2
5K1
R15_2
5K1
87
9
SW6_2C
PS-42E85L
11 10
12
SW6_2D
PS-42E85L
AFL-L
AFL-R
R27_2
6K8
R28_2
6K8
VR8_2
W50K
R17_2
5K1
AUX4
AUX-POST
R19_2
5K1
AUX2
VR6_2
W50K
AUX-PRE
2
1
3
SW2_2A
PS-22E85L-2
LD2_2
RED
R26_2
3K3
+RVCC
DIR-OUT2
MUTE
C17_2
100n
84
U4_2C
LM393
VR10_2A
10KD
5
4
6
SW2_2B
PS-22E85L-2
R40_2
5K1 VR9_2
W50K
R41_2
4K7
R42_2
4K7
R36_2
4K7
+RVCC
R34_2
10K
R33_2
10K
R38_2
10K
R29_2
100K
R31_2
100K C20_2
1uF R30_2 8K2
PGND PGND
PGND
PGND
LD4_2
LED-2P
TR1_2
HR
R32_2
82R
1
2
3
4
8
U4_2A
393
5
67
U4_2B
393 R39_2
27K
R51_2
1K
5
67
U3_1B
4580M
PGND
綠紅
D2_2
4148
D3_2
4148
C22_2
1uF
PGND
D4_2
4148
PGND
+RVCC
TR3_2
7002
R35_2
10K
C21_2
470P
PGND PGND
+RVCC
PGND
PGND
9

12345678
A
B
C
D
8
7654321
D
C
B
A
R18_3
5K1
VR7_3
W50K
AUX1
R8_3
5K1
5
67
U2_3B
4580M
R20_3
10K
C9_3
22P
VR5_3
W50K
C4_3
47uF
R16_3
5K1
AUX3
AUX-POST
R9_3
5K1
R10_3
5K1
LEFT-BUS
RIGHT-BUS
PAN
AUX-PRE
CH3.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
15-Jan-2005 KEVIN LIN.
MAIN INPUT STAGE
43of
ALTO PM16 VER030319
A3
21
3
SW5_3A
PS-22E85L
54
6
SW5_3B
PS-22E85L
21
3
SW1_3A
PS-22E85L
54
6
SW1_3B
PS-22E85L
21
3
SW3_3A
PS-22E85L
54
6
SW3_3B
PS-22E85L
54
6
SW6_3B
PS-42E85L
21
3
SW6_3A
PS-42E85L
SUB1
SUB2
R12_3
5K1
R13_3
5K1
AUX1/2 PRE/POST
R4_3
10K
SOLO(PFL)
D1_3
BAS316
LOGIC
LD3_3
YEL
(SOLO)
R23_3
2K2
-RVCC
(LOGIC=2.0V or 0.5V)
84
U2_3C
4580M
84
U1_3C
4580M
C13_3
100n
C14_3
100n
C15_3
100n
C16_3
100n
+VCC
-VCC
LOGIC
PCB# PM16MN1.PCB
EQ HI (12K)
C7_3
6.8n(M) VR1_3
B50K
R25_3
5K6
VR4_3
B50K
R24_3
5K6 LO (80Hz)
R3_3
10K
3
21
U2_3A
4580M
R7_3
1M
C6_3
22P
R5_3
3K9
VR2_3
B50K MID (FREQ=100Hz-8K)
C11_3
33n(M) C12_3
33n(M)
C8_3
6.8n(M)
C3_3
47uF
C2_3
47uF
PRECH3 PRECH3
3
21
U1_3A
4580M
5
67
U1_3B
4580M
R1_3
10K R2_3 10K
C5_3 22P
C10_3
152(M)
R11_3
5K1
R6_3
3K
VR3_3B
500KC
VR3_3A
500KC
R22_3
6K5
C1_3
682(M)
R21_3
6K2
PM16MN1 (CH3)
21
3
SW4_3A
PS-22E85L
54
6
SW4_3B
PS-22E85L
SUB3
SUB4
R14_3
5K1
R15_3
5K1
87
9
SW6_3C
PS-42E85L
11 10
12
SW6_3D
PS-42E85L
AFL-L
AFL-R
R27_3
6K8
R28_3
6K8
VR8_3
W50K
R17_3
5K1
AUX4
AUX-POST
R19_3
5K1
AUX2
VR6_3
W50K
AUX-PRE
2
1
3
SW2_3A
PS-22E85L-2
LD2_3
RED
R26_3
3K3
+RVCC
DIR-OUT3
MUTE
C17_3
100n
84
U4_3C
LM393 R36_3
4K7
+RVCC
R34_3
10K
R33_3
10K
R38_3
10K
R29_3
100K
R31_3
100K C20_3
1uF R30_3 8K2
PGND PGND
PGND
PGND
LD4_3
LED-2P
TR1_3
HR
R32_3
82R
1
2
3
4
8
U4_3A
393
5
67
U4_3B
393 R39_3
27K
R51_3
1K
3
21
U3_3A
4580M
PGND
綠紅
D2_3
4148
D3_3
4148
C22_3
1uF
PGND
D4_3
4148
PGND
+RVCC
TR3_3
7002
R35_3
10K
C21_3
470P
VR10_3A
10KD
5
4
6
SW2_3B
PS-22E85L-2
R40_3
5K1 VR9_3
W50K
R41_3
4K7
R42_3
4K7
LEVEL
PGND PGND
+RVCC
PGND
PGND
10

12345678
A
B
C
D
8
7654321
D
C
B
A
R18_4
5K1
VR7_4
W50K
AUX1
R8_4
5K1
5
67
U2_4B
4580M
R20_4
10K
C9_4
22P
VR5_4
W50K
C4_4
47uF
R16_4
5K1
AUX3
AUX-POST
R9_4
5K1
R10_4
5K1
LEFT-BUS
RIGHT-BUS
PAN
AUX-PRE
CH4.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
15-Jan-2005 KEVIN LIN.
MAIN INPUT STAGE
44of
ALTO PM16 VER030319
A3
21
3
SW5_4A
PS-22E85L
54
6
SW5_4B
PS-22E85L
21
3
SW1_4A
PS-22E85L
54
6
SW1_4B
PS-22E85L
21
3
SW3_4A
PS-22E85L
54
6
SW3_4B
PS-22E85L
54
6
SW6_4B
PS-42E85L
21
3
SW6_4A
PS-42E85L
SUB1
SUB2
R12_4
5K1
R13_4
5K1
AUX1/2 PRE/POST
R4_4
10K
SOLO(PFL)
D1_4
BAS316
LOGIC
LD3_4
YEL
(SOLO)
R23_4
2K2
-RVCC
(LOGIC=2.0V or 0.5V)
84
U2_4C
4580M
84
U1_4C
4580M
C13_4
100n
C14_4
100n
C15_4
100n
C16_4
100n
+VCC
-VCC
LOGIC
PCB# PM16MN1.PCB
EQ HI (12K)
C7_4
6.8n(M) VR1_4
B50K
R25_4
5K6
VR4_4
B50K
R24_4
5K6 LO (80Hz)
R3_4
10K
3
21
U2_4A
4580M
R7_4
1M
C6_4
22P
R5_4
3K9
VR2_4
B50K MID (FREQ=100Hz-8K)
C11_4
33n(M) C12_4
33n(M)
C8_4
6.8n(M)
C3_4
47uF
C2_4
47uF
PRECH4 PRECH4
3
21
U1_4A
4580M
5
67
U1_4B
4580M
R1_4
10K R2_4 10K
C5_4 22P
C10_4
152(M)
R11_4
5K1
R6_4
3K
VR3_4B
500KC
VR3_4A
500KC
R22_4
6K2
C1_4
682(M)
R21_4
6K2
PM16MN1 (CH4)
21
3
SW4_4A
PS-22E85L
54
6
SW4_4B
PS-22E85L
SUB3
SUB4
R14_4
5K1
R15_4
5K1
87
9
SW6_4C
PS-42E85L
11 10
12
SW6_4D
PS-42E85L
AFL-L
AFL-R
R27_4
6K8
R28_4
6K8
VR8_4
W50K
R17_4
5K1
AUX4
AUX-POST
R19_4
5K1
AUX2
VR6_4
W50K
AUX-PRE
2
1
3
SW2_4A
PS-22E85L-2
LD2_4
RED
R26_4
3K3
+RVCC
DIR-OUT4
MUTE
C17_4
100n
84
U4_4C
LM393 R36_4
4K7
+RVCC
R34_4
10K
R33_4
10K
R38_4
10K
R29_4
100K
R31_4
100K C20_4
1uF R30_4 8K2
PGND PGND
PGND
PGND
LD4_4
LED-2P
TR1_4
HR
R32_4
82R
1
2
3
4
8
U4_4A
393
5
67
U4_4B
393 R39_4
27K
R51_4
1K
5
67
U3_3B
4580M
PGND
綠紅
D2_4
4148
D3_4
4148
C22_4
1uF
PGND
D4_4
4148
PGND
+RVCC
TR3_4
7002
R35_4
10K
C21_4
470P
VR10_4A
10KD
5
4
6
SW2_4B
PS-22E85L-2
R40_4
5K1 VR9_4
W50K
R41_4
4K7
R42_4
4K7
LEVEL
PGND PGND
+RVCC
PGND
PGND
11

1234
A
B
C
D
4
321
D
C
B
A
PM12MN1.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
19-Feb-2005 KEVIN LIN.
MAIN INPUT STAGE
80of
ALTO PM12 VER030319
A3
PCB# PM12MN1.PCB
PM12MN1
CH1
CH1.SCH
CH2
CH2.SCH
CH3
CH3.SCH
CH4
CH4.SCH
CH5
CH5.SCH
CH6
CH6.SCH
CH7
CH7.SCH
CH8
CH8.SCH
(TO PM12MN2)
AUX1
AUX3
AUX4
AUX2
84
U3_1C
4580M
C19_1
100n
C18_1
100n +RVCC
-RVCC
84
U3_3C
4580M
C19_3
100n
C18_3
100n
84
U3_5C
4580M
C19_5
100n
C18_5
100n
84
U3_7C
4580M
C19_7
100n
C18_7
100n R1
0R
C3
47uF
R2
0R
C4
47uF
C1
47uF
C2
47uF PGND
+PVCC
-PVCC
1
2
3
4
5
6
7
8
9
10
11
12
CN1
2.0-12P
(TO PM12PU1)
DIR-OUT1 GND
GND
GND
GND
-VCC GND
+VCC
-VCC
DIR-OUT1
PRECH2
PRECH1
DIR-OUT2
+VCC
DIR-OUT2 GND
1
2
3
4
5
6
7
8
9
10
11
12
CN2
2.0-12P
(TO PM12PU1)
DIR-OUT3 GND
GND
GND
GND
-VCC GND
+VCC
-VCC
DIR-OUT3
PRECH4
PRECH3
DIR-OUT4
+VCC
DIR-OUT4 GND
1
2
3
4
5
6
7
8
9
10
11
12
CN3
2.0-12P
(TO PM12PU1)
DIR-OUT5 GND
GND
GND
GND
-VCC GND
+VCC
-VCC
DIR-OUT5
PRECH6
PRECH5
DIR-OUT6
+VCC
DIR-OUT6 GND
1
2
3
4
5
6
7
8
9
10
11
12
CN4
2.0-12P
(TO PM12PU1)
DIR-OUT7 GND
GND
GND
GND
-VCC GND
+VCC
-VCC
DIR-OUT7
PRECH8
PRECH7
DIR-OUT8
+VCC
DIR-OUT8 GND
PGNDPGNDPGNDPGND
LEFT-BUS
RIGHT-BUS
SUB1
SUB2
SOLO(PFL)
LOGIC
SUB3
SUB4
AFL-L
AFL-R
-RVCC
+RVCC
PGND
PGND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CN5
CON14
1
2
3
4
CN6
CON4
12

12345678
A
B
C
D
8
7654321
D
C
B
A
R18_1
5K1
VR7_1
W50K
AUX1
R8_1
5K1
5
67
U2_1B
4580M
R20_1
10K
C9_1
22P
VR5_1
W50K
C4_1
47uF
R16_1
5K1
AUX3
AUX-POST
R9_1
5K1
R10_1
5K1
LEFT-BUS
RIGHT-BUS
PAN
AUX-PRE
CH1.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
19-Feb-2005 KEVIN LIN.
MAIN INPUT STAGE
81of
ALTO PM12 VER030319
A3
21
3
SW5_1A
PS-22E85L
54
6
SW5_1B
PS-22E85L
21
3
SW1_1A
PS-22E85L
54
6
SW1_1B
PS-22E85L
21
3
SW3_1A
PS-22E85L
54
6
SW3_1B
PS-22E85L
54
6
SW6_1B
PS-42E85L
21
3
SW6_1A
PS-42E85L
SUB1
SUB2
R12_1
5K1
R13_1
5K1
AUX1/2 PRE/POST
R4_1
10K
SOLO(PFL)
D1_1
BAS316
LOGIC
LD3_1
YEL
(SOLO)
R23_1
2K2
-RVCC
(LOGIC=2.0V or 0.5V)
84
U2_1C
4580M
84
U1_1C
4580M
C13_1
100n
C14_1
100n
C15_1
100n
C16_1
100n
+VCC
-VCC
LOGIC
PCB# PM12MN1.PCB
EQ HI (12K)
C7_1
6.8n(M) VR1_1
B50K
R25_1
5K6
VR4_1
B50K
R24_1
5K6 LO (80Hz)
R3_1
10K
3
21
U1_1A
4580M
R7_1
1M
C6_1
22P
R5_1
3K9
VR2_1
B50K MID (FREQ=100Hz-8K)
C11_1
33n(M) C12_1
33n(M)
C8_1
6.8n(M)
C3_1
47uF
C2_1
47uF
PRECH1 PRECH1
5
67
U1_1B
4580M
3
21
U2_1A
4580M
R1_1
10K R2_1 10K
C5_1 22P
C10_1
152(M)
R11_1
5K1
R6_1
3K
VR3_1B
500KC
VR3_1A
500KC
R22_1
6K2
C1_1
682(M)
R21_1
6K2
PM12MN1 (CH1)
21
3
SW4_1A
PS-22E85L
54
6
SW4_1B
PS-22E85L
SUB3
SUB4
R14_1
5K1
R15_1
5K1
87
9
SW6_1C
PS-42E85L
11 10
12
SW6_1D
PS-42E85L
AFL-L
AFL-R
R27_1
6K8
R28_1
6K8
VR8_1
W50K
R17_1
5K1
AUX4
AUX-POST
R19_1
5K1
AUX2
VR6_1
W50K
AUX-PRE
2
1
3
SW2_1A
PS-22E85L-2
LD2_1
RED
R26_1
3K3
+RVCC
DIR-OUT1
MUTE
C17_1
100n
84
U4_1C
LM393
R36_1
4K7
+RVCC
R34_1
10K
R33_1
10K
R38_1
10K
R29_1
100K
R31_1
100K C20_1
1uF R30_1
8K2
PGND PGND
PGND
PGND
LD4_1
LED-2P
TR1_1
HR
R32_1
82R
1
2
3
4
8
U4_1A
393
5
67
U4_1B
393 R39_1
27K
R51_1
1K
3
21
U3_1A
4580M
PGND
綠紅
D2_1
4148
D3_1
4148
C22_1
1uF
PGND
D4_1
4148
PGND
+RVCC
TR3_1
7002
R35_1
10K
C21_1
470P
VR10_1A
10KD
5
4
6
SW2_1B
PS-22E85L-2
R40_1
5K1 VR9_1
W50K
R41_1
4K7
R42_1
4K7
LEVEL
PGND PGND
+RVCC
PGND
PGND
13

12345678
A
B
C
D
8
7654321
D
C
B
A
R18_2
5K1
VR7_2
W50K
AUX1
R8_2
5K1
5
67
U2_2B
4580M
R20_2
10K
C9_2
22P
VR5_2
W50K
C4_2
47uF
R16_2
5K1
AUX3
LEVEL
AUX-POST
R9_2
5K1
R10_2
5K1
LEFT-BUS
RIGHT-BUS
PAN
AUX-PRE
CH2.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
19-Feb-2005 KEVIN LIN.
MAIN INPUT STAGE
82of
ALTO PM12 VER030319
A3
21
3
SW5_2A
PS-22E85L
54
6
SW5_2B
PS-22E85L
21
3
SW1_2A
PS-22E85L
54
6
SW1_2B
PS-22E85L
21
3
SW3_2A
PS-22E85L
54
6
SW3_2B
PS-22E85L
54
6
SW6_2B
PS-42E85L
21
3
SW6_2A
PS-42E85L
SUB1
SUB2
R12_2
5K1
R13_2
5K1
AUX1/2 PRE/POST
R4_2
10K
SOLO(PFL)
D1_2
BAS316
LOGIC
LD3_2
YEL
(SOLO)
R23_2
2K2
-RVCC
(LOGIC=2.0V or 0.5V)
84
U2_2C
4580M
84
U1_2C
4580M
C13_2
100n
C14_2
100n
C15_2
100n
C16_2
100n
+VCC
-VCC
LOGIC
PCB# PM12MN1.PCB
EQ HI (12K)
C7_2
6.8n(M) VR1_2
B50K
R25_2
5K6
VR4_2
B50K
R24_2
5K6 LO (80Hz)
R3_2
10K
3
21
U1_2A
4580M
R7_2
1M
C6_2
22P
R5_2
3K9
VR2_2
B50K MID (FREQ=100Hz-8K)
C11_2
33n(M) C12_2
33n(M)
C8_2
6.8n(M)
C3_2
47uF
C2_2
47uF
PRECH2 PRECH2
5
67
U1_2B
4580M
3
21
U2_2A
4580M
R1_2
10K R2_2 10K
C5_2 22P
C10_2
152(M)
R11_2
5K1
R6_2
3K
VR3_2B
500KC
VR3_2A
500KC
R22_2
6K2
C1_2
682(M)
R21_2
6K2
PM12MN1 (CH2)
21
3
SW4_2A
PS-22E85L
54
6
SW4_2B
PS-22E85L
SUB3
SUB4
R14_2
5K1
R15_2
5K1
87
9
SW6_2C
PS-42E85L
11 10
12
SW6_2D
PS-42E85L
AFL-L
AFL-R
R27_2
6K8
R28_2
6K8
VR8_2
W50K
R17_2
5K1
AUX4
AUX-POST
R19_2
5K1
AUX2
VR6_2
W50K
AUX-PRE
2
1
3
SW2_2A
PS-22E85L-2
LD2_2
RED
R26_2
3K3
+RVCC
DIR-OUT2
MUTE
C17_2
100n
84
U4_2C
LM393
VR10_2A
10KD
5
4
6
SW2_2B
PS-22E85L-2
R40_2
5K1 VR9_2
W50K
R41_2
4K7
R42_2
4K7
R36_2
4K7
+RVCC
R34_2
10K
R33_2
10K
R38_2
10K
R29_2
100K
R31_2
100K C20_2
1uF R30_2 8K2
PGND PGND
PGND
PGND
LD4_2
LED-2P
TR1_2
HR
R32_2
82R
1
2
3
4
8
U4_2A
393
5
67
U4_2B
393 R39_2
27K
R51_2
1K
5
67
U3_1B
4580M
PGND
綠紅
D2_2
4148
D3_2
4148
C22_2
1uF
PGND
D4_2
4148
PGND
+RVCC
TR3_2
7002
R35_2
10K
C21_2
470P
PGND PGND
+RVCC
PGND
PGND
14

12345678
A
B
C
D
8
7654321
D
C
B
A
R18_3
5K1
VR7_3
W50K
AUX1
R8_3
5K1
5
67
U2_3B
4580M
R20_3
10K
C9_3
22P
VR5_3
W50K
C4_3
47uF
R16_3
5K1
AUX3
AUX-POST
R9_3
5K1
R10_3
5K1
LEFT-BUS
RIGHT-BUS
PAN
AUX-PRE
CH3.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
19-Feb-2005 KEVIN LIN.
MAIN INPUT STAGE
83of
ALTO PM12 VER030319
A3
21
3
SW5_3A
PS-22E85L
54
6
SW5_3B
PS-22E85L
21
3
SW1_3A
PS-22E85L
54
6
SW1_3B
PS-22E85L
21
3
SW3_3A
PS-22E85L
54
6
SW3_3B
PS-22E85L
54
6
SW6_3B
PS-42E85L
21
3
SW6_3A
PS-42E85L
SUB1
SUB2
R12_3
5K1
R13_3
5K1
AUX1/2 PRE/POST
R4_3
10K
SOLO(PFL)
D1_3
BAS316
LOGIC
LD3_3
YEL
(SOLO)
R23_3
2K2
-RVCC
(LOGIC=2.0V or 0.5V)
84
U2_3C
4580M
84
U1_3C
4580M
C13_3
100n
C14_3
100n
C15_3
100n
C16_3
100n
+VCC
-VCC
LOGIC
PCB# PM12MN1.PCB
EQ HI (12K)
C7_3
6.8n(M) VR1_3
B50K
R25_3
5K6
VR4_3
B50K
R24_3
5K6 LO (80Hz)
R3_3
10K
3
21
U1_3A
4580M
R7_3
1M
C6_3
22P
R5_3
3K9
VR2_3
B50K MID (FREQ=100Hz-8K)
C11_3
33n(M) C12_3
33n(M)
C8_3
6.8n(M)
C3_3
47uF
C2_3
47uF
PRECH3 PRECH3
5
67
U1_3B
4580M
3
21
U2_3A
4580M
R1_3
10K R2_3 10K
C5_3 22P
C10_3
152(M)
R11_3
5K1
R6_3
3K
VR3_3B
500KC
VR3_3A
500KC
R22_3
6K2
C1_3
682(M)
R21_3
6K2
PM12MN1 (CH3)
21
3
SW4_3A
PS-22E85L
54
6
SW4_3B
PS-22E85L
SUB3
SUB4
R14_3
5K1
R15_3
5K1
87
9
SW6_3C
PS-42E85L
11 10
12
SW6_3D
PS-42E85L
AFL-L
AFL-R
R27_3
6K8
R28_3
6K8
VR8_3
W50K
R17_3
5K1
AUX4
AUX-POST
R19_3
5K1
AUX2
VR6_3
W50K
AUX-PRE
2
1
3
SW2_3A
PS-22E85L-2
LD2_3
RED
R26_3
3K3
+RVCC
DIR-OUT3
MUTE
C17_3
100n
84
U4_3C
LM393 R36_3
4K7
+RVCC
R34_3
10K
R33_3
10K
R38_3
10K
R29_3
100K
R31_3
100K C20_3
1uF R30_3 8K2
PGND PGND
PGND
PGND
LD4_3
LED-2P
TR1_3
HR
R32_3
82R
1
2
3
4
8
U4_3A
393
5
67
U4_3B
393 R39_3
27K
R51_3
1K
3
21
U3_3A
4580M
PGND
綠紅
D2_3
4148
D3_3
4148
C22_3
1uF
PGND
D4_3
4148
PGND
+RVCC
TR3_3
7002
R35_3
10K
C21_3
470P
VR10_3A
10KD
5
4
6
SW2_3B
PS-22E85L-2
R40_3
5K1 VR9_3
W50K
R41_3
4K7
R42_3
4K7
LEVEL
PGND PGND
+RVCC
PGND
PGND
15

12345678
A
B
C
D
8
7654321
D
C
B
A
R18_4
5K1
VR7_4
W50K
AUX1
R8_4
5K1
5
67
U2_4B
4580M
R20_4
10K
C9_4
22P
VR5_4
W50K
C4_4
47uF
R16_4
5K1
AUX3
AUX-POST
R9_4
5K1
R10_4
5K1
LEFT-BUS
RIGHT-BUS
PAN
AUX-PRE
CH4.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
19-Feb-2005 KEVIN LIN.
MAIN INPUT STAGE
84of
ALTO PM12 VER030319
A3
21
3
SW5_4A
PS-22E85L
54
6
SW5_4B
PS-22E85L
21
3
SW1_4A
PS-22E85L
54
6
SW1_4B
PS-22E85L
21
3
SW3_4A
PS-22E85L
54
6
SW3_4B
PS-22E85L
54
6
SW6_4B
PS-42E85L
21
3
SW6_4A
PS-42E85L
SUB1
SUB2
R12_4
5K1
R13_4
5K1
AUX1/2 PRE/POST
R4_4
10K
SOLO(PFL)
D1_4
BAS316
LOGIC
LD3_4
YEL
(SOLO)
R23_4
2K2
-RVCC
(LOGIC=2.0V or 0.5V)
84
U2_4C
4580M
84
U1_4C
4580M
C13_4
100n
C14_4
100n
C15_4
100n
C16_4
100n
+VCC
-VCC
LOGIC
PCB# PM12MN1.PCB
EQ HI (12K)
C7_4
6.8n(M) VR1_4
B50K
R25_4
5K6
VR4_4
B50K
R24_4
5K6 LO (80Hz)
R3_4
10K
3
21
U1_4A
4580M
R7_4
1M
C6_4
22P
R5_4
3K9
VR2_4
B50K MID (FREQ=100Hz-8K)
C11_4
33n(M) C12_4
33n(M)
C8_4
6.8n(M)
C3_4
47uF
C2_4
47uF
PRECH4 PRECH4
5
67
U1_4B
4580M
3
21
U2_4A
4580M
R1_4
10K R2_4 10K
C5_4 22P
C10_4
152(M)
R11_4
5K1
R6_4
3K
VR3_4B
500KC
VR3_4A
500KC
R22_4
6K2
C1_4
682(M)
R21_4
6K2
PM12MN1 (CH4)
21
3
SW4_4A
PS-22E85L
54
6
SW4_4B
PS-22E85L
SUB3
SUB4
R14_4
5K1
R15_4
5K1
87
9
SW6_4C
PS-42E85L
11 10
12
SW6_4D
PS-42E85L
AFL-L
AFL-R
R27_4
6K8
R28_4
6K8
VR8_4
W50K
R17_4
5K1
AUX4
AUX-POST
R19_4
5K1
AUX2
VR6_4
W50K
AUX-PRE
2
1
3
SW2_4A
PS-22E85L-2
LD2_4
RED
R26_4
3K3
+RVCC
DIR-OUT4
MUTE
C17_4
100n
84
U4_4C
LM393 R36_4
4K7
+RVCC
R34_4
10K
R33_4
10K
R38_4
10K
R29_4
100K
R31_4
100K C20_4
1uF R30_4 8K2
PGND PGND
PGND
PGND
LD4_4
LED-2P
TR1_4
HR
R32_4
82R
1
2
3
4
8
U4_4A
393
5
67
U4_4B
393 R39_4
27K
R51_4
1K
5
67
U3_3B
4580M
PGND
綠紅
D2_4
4148
D3_4
4148
C22_4
1uF
PGND
D4_4
4148
PGND
+RVCC
TR3_4
7002
R35_4
10K
C21_4
470P
VR10_4A
10KD
5
4
6
SW2_4B
PS-22E85L-2
R40_4
5K1 VR9_4
W50K
R41_4
4K7
R42_4
4K7
LEVEL
PGND PGND
+RVCC
PGND
PGND
16

12345678
A
B
C
D
8
7654321
D
C
B
A
R18_5
5K1
VR7_5
W50K
AUX1
R8_5
5K1
5
67
U2_5B
4580M
R20_5
10K
C9_5
22P
VR5_5
W50K
C4_5
47uF
R16_5
5K1
AUX3
AUX-POST
R9_5
5K1
R10_5
5K1
LEFT-BUS
RIGHT-BUS
AUX-PRE
CH5.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
19-Feb-2005 KEVIN LIN.
MAIN INPUT STAGE
85of
ALTO PM12 VER030319
A3
21
3
SW5_5A
PS-22E85L
54
6
SW5_5B
PS-22E85L
21
3
SW1_5A
PS-22E85L
54
6
SW1_5B
PS-22E85L
21
3
SW3_5A
PS-22E85L
54
6
SW3_5B
PS-22E85L
54
6
SW6_5B
PS-42E85L
21
3
SW6_5A
PS-42E85L
SUB1
SUB2
R12_5
5K1
R13_5
5K1
AUX1/2 PRE/POST
R4_5
10K
SOLO(PFL)
D1_5
BAS316
LOGIC
LD3_5
YEL
(SOLO)
R23_5
2K2
-RVCC
(LOGIC=2.0V or 0.5V)
84
U2_5C
4580M
84
U1_5C
4580M
C13_5
100n
C14_5
100n
C15_5
100n
C16_5
100n
+VCC
-VCC
LOGIC
PCB# PM12MN1.PCB
EQ HI (12K)
C7_5
6.8n(M) VR1_5
B50K
R25_5
5K6
VR4_5
B50K
R24_5
5K6 LO (80Hz)
R3_5
10K
3
21
U1_5A
4580M
R7_5
1M
C6_5
22P
R5_5
3K9
VR2_5
B50K MID (FREQ=100Hz-8K)
C11_5
33n(M) C12_5
33n(M)
C8_5
6.8n(M)
C3_5
47uF
C2_5
47uF
PRECH5 PRECH5
5
67
U1_5B
4580M
3
21
U2_5A
4580M
R1_5
10K R2_5 10K
C5_5 22P
C10_5
152(M)
R11_5
5K1
R6_5
3K
VR3_5B
500KC
VR3_5A
500KC
R22_5
6K2
C1_5
682(M)
R21_5
6K2
PM12MN1 (CH5)
21
3
SW4_5A
PS-22E85L
54
6
SW4_5B
PS-22E85L
SUB3
SUB4
R14_5
5K1
R15_5
5K1
87
9
SW6_5C
PS-42E85L
11 10
12
SW6_5D
PS-42E85L
AFL-L
AFL-R
R27_5
6K8
R28_5
6K8
VR8_5
W50K
R17_5
5K1
AUX4
AUX-POST
R19_5
5K1
AUX2
VR6_5
W50K
AUX-PRE
2
1
3
SW2_5A
PS-22E85L-2
LD2_5
RED
R26_5
3K3
+RVCC
DIR-OUT5
MUTE
C17_5
100n
84
U4_5C
LM393 R36_5
4K7
+RVCC
R34_5
10K
R33_5
10K
R38_5
10K
R29_5
100K
R31_5
100K C20_5
1uF R30_5 8K2
PGND PGND
PGND
PGND
LD4_5
LED-2P
TR1_5
HR
R32_5
82R
1
2
3
4
8
U4_5A
393
5
67
U4_5B
393 R39_5
27K
R51_5
1K
3
21
U3_5A
4580M
PGND
綠紅
D2_5
4148
D3_5
4148
C22_5
1uF
PGND
D4_5
4148
PGND
+RVCC
TR3_5
7002
R35_5
10K
C21_5
470P
VR10_5A
10KD
5
4
6
SW2_5B
PS-22E85L-2
R40_5
5K1 VR9_5
W50K
R41_5
4K7
R42_5
4K7
LEVEL
PGND PGND
+RVCC
PGND
PGND
17

12345678
A
B
C
D
8
7654321
D
C
B
A
R18_6
5K1
VR7_6
W50K
AUX1
R8_6
5K1
5
67
U2_6B
4580M
R20_6
10K
C9_6
22P
VR5_6
W50K
C4_6
47uF
R16_6
5K1
AUX3
AUX-POST
R9_6
5K1
R10_6
5K1
LEFT-BUS
RIGHT-BUS
PAN
AUX-PRE
CH6.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
19-Feb-2005 KEVIN LIN.
MAIN INPUT STAGE
86of
ALTO PM12 VER030319
A3
21
3
SW5_6A
PS-22E85L
54
6
SW5_6B
PS-22E85L
21
3
SW1_6A
PS-22E85L
54
6
SW1_6B
PS-22E85L
21
3
SW3_6A
PS-22E85L
54
6
SW3_6B
PS-22E85L
54
6
SW6_6B
PS-42E85L
21
3
SW6_6A
PS-42E85L
SUB1
SUB2
R12_6
5K1
R13_6
5K1
AUX1/2 PRE/POST
R4_6
10K
SOLO(PFL)
D1_6
BAS316
LOGIC
LD3_6
YEL
(SOLO)
R23_6
2K2
-RVCC
(LOGIC=2.0V or 0.5V)
84
U2_6C
4580M
84
U1_6C
4580M
C13_6
100n
C14_6
100n
C15_6
100n
C16_6
100n
+VCC
-VCC
LOGIC
PCB# PM12MN1.PCB
EQ HI (12K)
C7_6
6.8n(M) VR1_6
B50K
R25_6
5K6
VR4_6
B50K
R24_6
5K6 LO (80Hz)
R3_6
10K
3
21
U1_6A
4580M
R7_6
1M
C6_6
22P
R5_6
3K9
VR2_6
B50K MID (FREQ=100Hz-8K)
C11_6
33n(M) C12_6
33n(M)
C8_6
6.8n(M)
C3_6
47uF
C2_6
47uF
PRECH6 PRECH6
5
67
U1_6B
4580M
3
21
U2_6A
4580M
R1_6
10K R2_6 10K
C5_6 22P
C10_6
152(M)
R11_6
5K1
R6_6
3K
VR3_6B
500KC
VR3_6A
500KC
R22_6
6K2
C1_6
682(M)
R21_6
6K2
PM12MN1 (CH6)
21
3
SW4_6A
PS-22E85L
54
6
SW4_6B
PS-22E85L
SUB3
SUB4
R14_6
5K1
R15_6
5K1
87
9
SW6_6C
PS-42E85L
11 10
12
SW6_6D
PS-42E85L
AFL-L
AFL-R
R27_6
6K8
R28_6
6K8
VR8_6
W50K
R17_6
5K1
AUX4
AUX-POST
R19_6
5K1
AUX2
VR6_6
W50K
AUX-PRE
2
1
3
SW2_6A
PS-22E85L-2
LD2_6
RED
R26_6
3K3
+RVCC
DIR-OUT6
MUTE
C17_6
100n
84
U4_6C
LM393 R36_6
4K7
+RVCC
R34_6
10K
R33_6
10K
R38_6
10K
R29_6
100K
R31_6
100K C20_6
1uF R30_6 8K2
PGND PGND
PGND
PGND
LD4_6
LED-2P
TR1_6
HR
R32_6
82R
1
2
3
4
8
U4_6A
393
5
67
U4_6B
393 R39_6
27K
R51_6
1K
5
67
U3_5B
4580M
PGND
綠紅
D2_6
4148
D3_6
4148
C22_6
1uF
PGND
D4_6
4148
PGND
+RVCC
TR3_6
7002
R35_6
10K
C21_6
470P
VR10_6A
10KD
5
4
6
SW2_6B
PS-22E85L-2
R40_6
5K1 VR9_6
W50K
R41_6
4K7
R42_6
4K7
LEVEL
PGND PGND
+RVCC
PGND
PGND
18

12345678
A
B
C
D
8
7654321
D
C
B
A
R18_7
5K1
VR7_7
W50K
AUX1
R8_7
5K1
5
67
U2_7B
4580M
R20_7
10K
C9_7
22P
VR5_7
W50K
C4_7
47uF
R16_7
5K1
AUX3
LEVEL
AUX-POST
R9_7
5K1
R10_7
5K1
LEFT-BUS
RIGHT-BUS
PAN
AUX-PRE
CH7.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
19-Feb-2005 KEVIN LIN.
MAIN INPUT STAGE
87of
ALTO PM12 VER030319
A3
21
3
SW5_7A
PS-22E85L
54
6
SW5_7B
PS-22E85L
21
3
SW1_7A
PS-22E85L
54
6
SW1_7B
PS-22E85L
21
3
SW3_7A
PS-22E85L
54
6
SW3_7B
PS-22E85L
54
6
SW6_7B
PS-42E85L
21
3
SW6_7A
PS-42E85L
SUB1
SUB2
R12_7
5K1
R13_7
5K1
AUX1/2 PRE/POST
R4_7
10K
SOLO(PFL)
D1_7
BAS316
LOGIC
LD3_7
YEL
(SOLO)
R23_7
2K2
-RVCC
(LOGIC=2.0V or 0.5V)
84
U2_7C
4580M
84
U1_7C
4580M
C13_7
100n
C14_7
100n
C15_7
100n
C16_7
100n
+VCC
-VCC
LOGIC
PCB# PM12MN1.PCB
EQ HI (12K)
C7_7
6.8n(M) VR1_7
B50K
R25_7
5K6
VR4_7
B50K
R24_7
5K6 LO (80Hz)
R3_7
10K
3
21
U1_7A
4580M
R7_7
1M
C6_7
22P
R5_7
3K9
VR2_7
B50K MID (FREQ=100Hz-8K)
C11_7
33n(M) C12_7
33n(M)
C8_7
6.8n(M)
C3_7
47uF
C2_7
47uF
PRECH7 PRECH7
5
67
U1_7B
4580M
3
21
U2_7A
4580M
R1_7
10K R2_7 10K
C5_7 22P
C10_7
152(M)
R11_7
5K1
R6_7
3K
VR3_7B
500KC
VR3_7A
500KC
R22_7
6K2
C1_7
682(M)
R21_7
6K2
PM12MN1 (CH7)
21
3
SW4_7A
PS-22E85L
54
6
SW4_7B
PS-22E85L
SUB3
SUB4
R14_7
5K1
R15_7
5K1
87
9
SW6_7C
PS-42E85L
11 10
12
SW6_7D
PS-42E85L
AFL-L
AFL-R
R27_7
6K8
R28_7
6K8
VR8_7
W50K
R17_7
5K1
AUX4
AUX-POST
R19_7
5K1
AUX2
VR6_7
W50K
AUX-PRE
2
1
3
SW2_7A
PS-22E85L-2
LD2_7
RED
R26_7
3K3
+RVCC
DIR-OUT7
MUTE
C17_7
100n
84
U4_7C
LM393 R36_7
4K7
+RVCC
R34_7
10K
R33_7
10K
R38_7
10K
R29_7
100K
R31_7
100K C20_7
1uF R30_7 8K2
PGND PGND
PGND
PGND
LD4_7
LED-2P
TR1_7
HR
R32_7
82R
1
2
3
4
8
U4_7A
393
5
67
U4_7B
393 R39_7
27K
R51_7
1K
3
21
U3_7A
4580M
PGND
綠紅
D2_7
4148
D3_7
4148
C22_7
1uF
PGND
D4_7
4148
PGND
+RVCC
TR3_7
7002
R35_7
10K
C21_7
470P
VR10_7A
10KD
5
4
6
SW2_7B
PS-22E85L-2
R40_7
5K1
VR9_7
W50K
R41_7
4K7
R42_7
4K7
+RVCC
PGNDPGND
PGND
PGND
19