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1
2
3
CH-4/MONITOR
C1
0805
100P
50V
A
6
-
-
-
R1
W100
J1
S
R
T
20K0
0805
R2
MC33079D
5
13
-
W125
3918
10K
14
U4:4
0805
1/4in JCK
R3
7668
N42
N41
12
W125
SO14
+
10K
C39
CH4-GAIN
B
0805
P1:1
1B LIN
100P
50V
10K
IG
0805
R5
4480
W100
20K0
N37
0805
SG
5
N38
C
J2
S
R
T
6
1/4in JCK
-
-
-
N35
LINK OUT
R11
3918
5
+
W100
4K99
U11:2
0805
N39
6
-
5
R189
D
N40
W100
4K99
J3
R188
0805
S
R
T
1/4in JCK
4K99
R21
LINK IN
6
-
-
-
W100
LINK_GND
4K99
100P
N36
0805
3918
R186
100R
E
1206
R28
W100
IG
2K32
R29
0805
W100
2K32
2
-
0805
1
U14:1
SG
R178
3
7817
LEFT-SIG~
W100
+
F
2K32
R179
MC33078D
0805
2K32
0805
R88
W125
68K
R34
0805
W100
2K32
LINK_GND
0805
R35
W100
2K32
6
-
0805
7
G
U14:2
SG
R180
7817
5
RIGHT-SIG~
+
W100
2K32
R181
MC33078D
0805
2K32
R89
0805
W125
68K
0805
LINK_GND
H
W4
THERMISTOR
25V
Red
100U
C7
C8
N55
2
W4:1
Blk
R37
Q3
2
N56
W125
R38
0805
W4:2
47R
W100
0805
R39
100R
TO92
0805
I
2N5551
2K0
5107
AG
NJM7815FA
+24VDC
U16
IN
OUT
P103
W5
6856
J
C16
1
100N
RAD .2in
N59
3
100V
W5:1
N60
2
3
W5:2
3
N61
3
AG
C19
W5:3
100N
RAD .2in
6857
100V
IN
OUT
U17
K
-24VDC
NJM7915FA
1
2
3
4
5
6
7
N80
MC33079D
P1:2
9
-
1B LIN
7668
N81
10K
8
U4:3
4480
R149
10
D
W125
+
SO14
N82
10K
0805
SG
N43
N44
N45
R168
N47
N46
470R
D
0805
R9
SG
10K
0805
C80
R10
100P
50V
0805
W100
R187
20K0
R12
W100
0805
10K
4K99
0805
CDSF4148
0805
SG
2
-
C2
C3
7
1
U11:1
7817
7817
MC33078D
3
63V
63V
+
R99
220N
220N
MC33078D
RAD .2in
RAD .2in
W125
R20
0805
39K
100K
0805
W100
0805
SG
50V
SG
0805
C79
R31
W250
619R0
1206
R36
W250
R145
619R0
B1
1206
10W0
.
3R9
C69
C70
3U3
4U7
100V
100V
T3
RAD POLY
RAD POLY
W11 3558
3746
+15V
1
N66
W3
FAN
L1
W11:1
25V
370UH
2
Red
3805
N67
100U
2
W11:2
N57
W3:1
3
Blk
N68
N58
2
W11:3
W3:2
4
N69
W11:4
+15V
+15V
W8_ W8
MC33078D
U11:3
63V
5
5
8
8
N62
C17
N63
7817
D12
1U
W8_:5
W8:5
C11
DO-214AC
ES1J
4
4
N65
8
N64
8
W8_:4
W8:4
-15V
63V
D13
C20
DO-214AC
ES1J
1U
C14
-15V
SG
4
5
6
7
8
9
10
R176
W100
2
1K0
-
0805
330N
R153
C71
1
U12:1
W100
63V
7668
1K0
R150
3
+
0805
MC33079D
W125
5K6
R177
0805
W100
C72
1K0
82N
0805
RAD .2in
6
100V
-
R152
R154
3K92
7
U12:2
W100
0805
C73
C74
7668
SG
1K0
5
+
0805
MC33079D
33N
100N
R151
RAD .2in
RAD .2in
10K
100V
100V
0805
SG
12
+
R8
9
14
-
U12:3
U12:4
SG
0805
R15
N48
2K0
8
13
-
7668
D1
W125
MC33079D
0805
47K
10
7668
+
R147
MC33079D
R18
2K0
W125
0805
0805
R19
30K0
30K0
C4
0805
0805
100P
50V
SG
U15:2
U15:1
D6
D4
D5
D3
CDSF4148
CDSF4148
+15V
-15V
R33
R32
0805
0805
3K16
4M7
P104
W12
W2
W6
SG
N71
1
1
1
2
2
2
N53
W2:1
W6:1
W12:1
ICEpower50ASX2
2
2
2
2
2
2
N54
N70
W12:2
W2:2
W6:2
BLOCK10
BLOCK12
YELLOW
+
SP1
+
SP1
BLACK
HORN
-
7567
HORN
8R 50W 1.00" HF DRIVER
-
7567
8R 50W 1.00" HF DRIVER
4
RED
SP2
4
4OHM/10"
SP2~
WOOFER
4
4OHM/12"
7570
WOOFER
BLACK
7569
4
MC33079D
MC33078D
V+
U13:3
U12:5
100V
100V
100V
7817
7668
C9
100N
100N
V-
C10
100N
100V
100V
100V
100N
100N
C13
C18
100N
8
9
10
11
12
13
R102
W100
0805
2K0
R106
6
W100
-
0805
R7
7
2K0
U13:2
W100
5
7817
0805
+
2K0
MC33078D
2
-
W100
AG
R169
1
U13:1
W125
7817
470R
3
+
0805
ZD1
MC33078D
R146
SOD123
2K0
4V7
0805
SG
ZD2
SOD123
IG
4V7
AG
AG
R22
W125
0805
C5
10U
C6
1M
R26
R27
ZD3
0805
D2
0805
20K5
SOD123
2K2
1U
63V
22V
63V
CDSF4148
-24VDC
ICEpower50ASX2
Mains
Black
Live
P100
Fuse
EMI Filter
Neutral
White
Enable
OC
Thermal
P102
Input ch.2
Input filter
&
Audio in
Input ch.1
DC blocking
AGND
MC33078D
U14:3
100V
7817
C12
100N
100V
C15
100N
11
12
13
14
15
16
17
AG = AMP GROUND
IG = INPUT GROUND
SG = SIGNAL GROUND
W1
P102
N49
1
7
W1:1
2
W1:2
7
3
7
W1:3
N50
4
7
W1:4
R14
N51
5
W1:5
7
R16
6
7
W1:6
N52
AG
7
7
W1:7
5122
+15V
J109
Q1
D
R23
R24
2K2
2K2
R25
POWER
S
0805
0805
100K
LD1
TO92
0805
BLU
MPSA13
MPSA13
RED
Q2
R30
TO92
LD2
AG
5105
ZD4
47K5
DISABLE
SOD123
0805
10V
AG
Block Diagram
DC/DC
Vd aux
Rectification
P103
GND
converter
Vs aux
with
and filtering
isolation
Output
stage and
Vo channel 1
filtering
+5V -5V
channel 1
GND
MECC control
Audio out
and HCOM
modulation
Output
Vo channel 2
stage and
P104
filtering
GND
channel 2
AGND
Channel 3 & Links
Section:
BLOCK10-12
Product(s):
PCB#:
M1539
Rev#:
V02
EML Rev#:
V02
Sheet
2
Modified:
2021-03-29
File:
Channel 3&Links~.SCHDOC
Tmp Date:
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A
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C
D
E
F
G
H
I
J
K
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