11
11
10
10
9
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
A
A
B
B
C
C
D
D
E
E
F
F
G
G
H
H
I
I
J
J
K
K
L
L
M
M
N
N
O
O
P
P
Q
Q
of
Filename:
PCB#
Sheet
3
1
Product
Date:
Rev:
YsType: YsType
M1507V04sch.sch2006
M1507
Tue Dec 09, 2014
INPUTS
V04
SB115
W6
FAN
BLK
RED
W4
2
1
/4
W
1M
R10
.
1
/4
W
100K
R28
.
1
/4
W
22K
R38
.
4148
D1
1
/4
W
2K2
R35
.
YEL
4
7
1
3
1
/4
W
100K
R1
.
P104
P103
1
/4
W
2K
R5
.
4148
D4
IC
E
5
0
S
A
X
2
W5
2
3
W2:B
W2
R42
1/4W
2K
2
2
W3:B
W3
P104
SC2
C8
16V
10U
oc
Thermal
Input ch-1
Input ch-2
Audio in
P102
Thermal
Enable
Neutral
Mains
S4
Live
7
7
W4:G
5
7
W4:E
2
7
W4:B
3
7
W4:C
P102
2 of 2
5,6
fuse
Vo ch2
Audio out
GND
3
Vs aux
2
Vd aux
63V
C71
100N
T
H
E
R
M
IS
T
O
R
63V
C35
100N
RAD .2in
100U
C3
25V
Q1
5113
MPSA42
TO92
1
/4
W R60
2K49
C44
33N
100V
R99
1/4W
.
10K0
33N
C37
100V
R9
1/4W
.
47K
R7
1/4W
MINI
20K0
RAD .2in
100U
C5
25V
R3
1/4W
.
10K0
D23
4148
R23
1/4W
.
10K0
R11
1/4W
.
10K0
68N
C36
100V
63V
C102
100N
IC
E
5
0
S
A
X
2
1
/4
W
4K99
R27
.
R76
1/4W
.
10K0
3
3
W2:C
1
3
W2:A
1
/4
W
3K
R41
.
C54
63V
220N
1
/4
W
1K0
R181
MINI
R87
1/4W
MINI
1K0
63V
C24
1U
IN
REF
OUT
MC7915CT
U6
6871
IN
REF
OUT
MC7815CT
U4
6872
D3
0W5
22V0
1
N
5
2
5
1
B
R
L
1
/4
W
2K2
R40
.
4148
D6
M
GAIN
5K 10C
P1
C11
16V
10U
4148
D8
63V
C21
10U
4148
D7
R178
1/4W
.
4K7
C1
100V
100P
R233
5.0W
.
10R
ZD5
0W5
10V0
1N5240BRL
LD2
6405
RED
DISABLED
1
2
W3:A
1
/4
W
2K2
R25
.
SC1
R50
1/4W
.
10K0
W1
B
la
c
k
1
/4
W
47K
R37
.
1
/4
W
100K
R36
.
Bass
Low-Mid
Hi-Mid
AGND
OC
White
6
7
W4:F
4
7
W4:D
1
7
W4:A
R174
1/8W
FLMP
681R
R65
1/4W
.
4K99
Treble
Low
Expander
Input
Filter
R71
1/4W
.
100R
C55
63V
2U2
MECC
Control and
HCOM
Modulation
U9:B
MC33079P
Output
stage and
Filtering
ch.2
R33
1/4W
.
270R
R4
1/4W
.
270R
GND
Vo ch1
1
GND
63V
C26
100N
8
V
+
4
V
-
U1:C
R81
1/4W
.
10K0
4
V
+
1
1
V
-
U9:E
63V
C32
100N
8
V
+
4
V
-
U14:C
63V
C42
100N
33N
C45
100V
63V
C101
100N
1
/4
W
4M7
R30
.
U1:B
TL072
1
/4
W
10K0
R136
.
63V
C23
1U
R51
1/4W
.
30K
R39
1/4W
.
1M
LD1
BLU
POWER
6554
U7:B
MC33078P
MPSA13
Q2
TO92
5105
IC
E
5
0
S
A
X
2
R175
1/4W
.
470R
50V
C81
12N
U9:A
MC33079P
U9:C
MC33079P
DC/DC
Converter
with
isolation
Output
stage and
Filtering
ch.1
R2
1/4W
.
270R
P103
R172
1/4W
10K0
1/4W
2K49
R61
3
4
W1:C
1
4
W1:A
AGND
ICE50SAX2
63V
C28
100N
63V
C43
100N
R34
1/4W
.
47R
R8
1/4W
.
100R
2
W5:B
2
W5:A
C58
100V
100P
U8:B
MC33079P
63V
470N
C10
1
/4
W R59
2K49
C7
100V
33N
C39
63V
220N
U8:A
MC33079P
U1:A
TL072
R86
1/4W
1K0
R58
1/4W
.
1K2
C6
100V
3U3
RAD POLY
63V
C22
100N
4007
D5
4
4
W1:D
S2:A
2
4
W1:B
C70
63V
1U
1N750ARL
ZD3
0W5
4V7
R150
1/4W
.
30K
C34
100V
100P
R26
1/4W
.
4K99
U7:A
MC33078P
R177
1/4W
.
470R
C46
16V
10U
R176
1/4W
MINI
1K0
4R 200W
Woofer
YS#7556
8R 30W
Tweeter
YS#7552
IEC_RECT
90V TO 260V INPUT.
SEE PAGE 2 OF 2
FOR DETAILS.
R20
1/4W
.
10K0
C31
50V
22U
R6
1/4W
.
10K0
R57
1/8W
FLMP
681R
U9:D
MC33079P
TONE CONTROLS[P2]
J4
3923
LINE OUT
63V
C27
100N
4
V
+
1
1
V
-
U8:E
8
V
+
4
V
-
U7:C
S3:B
R74
1/4W
MINI
1K0
50V
C4
330P
1
/4
W
27K
R168
.
M
MASTER
5B LIN
10K
4493
P2
1N750ARL
ZD4
0W5
4V7
2
1
NSL-32SR2
6858
U5:A
TO92
Q9
5122
J109
3
4
NSL-32SR2
U5:B
6858
S2:B
TWEETER (IN/OUT)
63V
C20
100N
4007
D2
U14:A
MC33078P
U14:B
MC33078P
R49
1/4W
.
10K0
U8:C
MC33079P
Rectification
and
Fitering
EMI
FILTER
C47
50V
22U
R64
1/8W
FLMP
681R
R70
1/4W
.
4K99
2
6
1
3
5
4
S
T
R
-
-
-
PHONES
J3
UP
DOWN
S1:B
2
W6:B
2
W6:A
CAUTION HIGH VOLTAGE
2
6
1
3
5
4
S
T
R
-
-
-
J6
AUX IN
TONE CONTROLS[D2]
ICEpower50SAX2 block diagram
S3:A
LIMITER
MC33079P
U8:D
2
6
1
3
5
4
S
T
R
-
-
-
J2
ACTIVE INPUT (-6dB)
UP
DOWN
S1:A
GND / LIFT
2
6
1
3
5
4
S
T
R
-
-
-
J1
PASSIVE INPUT (0dB)
