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A
B
C
5
1
C36
68N
100V
J1
S
R
T
6
-
-
-
PASSIVE INPUT (0dB)
330P
C4
2
50V
5
R10
R7
1M
1/4W
.
20K0
J2
S
R
T
MINI
6
-
-
-
ACTIVE INPUT (-6dB)
3
R9
C7
1/4W
33N
100V
47K
.
220N
63V
U8:A
.
C39
10K0
1/4W
MC33079P
R23
R168
27K
.
4
5
C37
-
-
-
6
33N
100V
J6
6
S
R
T
R59
AUX IN
2K49
D23
4148
R99
C10
1/4W
5
10K0
470N
.
63V
R81
C45
1/4W
33N
10K0
100V
.
R60
2K49
7
C44
33N
100V
100N
C26
100N
100N
63V
U1:C
U9:E
C27
U14:C
C42
63V
63V
8
100N
100N
100N
C71
C28
C43
63V
63V
63V
9
W6
100U
C5
100U
W6:A
2
RAD
.2in
25V
C3
RAD
.2in
25V
W6:B
2
R34
1/4W
MPSA42
47R
.
10
R8
Q1
1/4W
5113
100R
.
R5
TO92
2K
.
11
A
B
C
D
E
F
G
R58
1/4W
1K2
.
R11
R76
R87
1/4W
1/4W
C11
1/4W
10K0
10K0
10U
1K0
.
.
MINI
R74
1/4W
1K0
MINI
TL072
R86
1/4W
TL072
U1:B
1K0
P1
MINI
U1:A
R181
1K0
MINI
220N
63V
C54
R136
10K0
.
C46
10U
16V
R3
1/4W
10K0
U8:C
.
U8:B
MC33079P
.
30K
1/4W
MC33079P
R51
1N750ARL
ZD3
.
4V7
30K
0W5
1/4W
R61
R150
1/4W
0W5
2K49
4V7
100V
100P
R172
ZD4
C34
1/4W
1N750ARL
10K0
C58
100V
100P
U5:B
0W5
6858
6858
22V0
NSL-32SR2
NSL-32SR2
R40
D3
2K2
100N
U5:A
.
U8:E
C101
63V
D6
100N
4148
4148
4148
C102
D1
D7
63V
.
R30
4148
3K
4M7
D4
R28
.
W5
FAN
2
W5:A
U4
MC7815CT
2
W5:B
IN
OUT
REF
6872
100N
C20
P103
W2
63V
1
W2:A
3
2
W2:B
3
3
W2:C
3
100N
C22
63V
6871
REF
IN
OUT
MC7915CT
U6
D
E
F
G
H
I
J
R176
U14:A
1/4W
16V
1K0
16V
10U
MINI
MC33078P
C8
GAIN
R177
R178
M
1/4W
1/4W
270R
4K7
5K 10C
.
.
C1
100P
100V
MC33078P
U14:B
U8:D
MC33079P
.
10K0
1/4W
R27
.
10K0
1/4W
R26
Signal ground
Amp ground
Input ground
TO92
.
1M
5122
1/4W
Q9
R39
R25
J109
63V
2K2
1U
6554
R38
4148
C21
.
POWER
22K
C70
10U
LD1
.
63V
D8
BLU
RED
1N5240BRL
LD2
ZD5
DISABLED
10V0
6405
0W5
W3
P104
1
2
W3:A
2
2
W3:B
TWEETER (IN/OUT)
S2:B
S2:A
W1
1U
4007
1
4
C23
D2
R41
C6
2
63V
RAD POLY
5.0W
4
3U3
100V
10R
3
.
4
4
4
4007
1U
D5
C24
63V
H
I
J
K
L
M
TONE CONTROLS[D2]
TONE CONTROLS[P2]
C55
(Sheet 2 of 2)
63V
2U2
Bass
Low-Mid
Hi-Mid
Treble
Low
Expander
FLMP
681R
1/8W
U9:D
.
R174
100R
MC33079P
1/4W
.
4K99
R71
1/4W
50V
R65
C81
12N
.
.
4K99
470R
1/4W
1/4W
R70
R175
W4
P102
1
7
W4:A
2
Over-current
7
W4:B
3
Thermal
7
W4:C
ICEpower50SAX2 block diagram
4
7
W4:D
5
7
W4:E
6
7
W4:F
7
7
W4:G
CAUTION HIGH VOLTAGE
S3
Live
R35
R36
2K2
100K
.
Mains
fuse
.
MPSA13
White
Q2
Neutral
R37
5105
47K
TO92
.
1
Enable
2
Over-current
IEC_RECT
3
90V TO 260V INPUT.
Thermal
SEE PAGE 2 OF 2
FOR DETAILS.
P102
4
Input ch-2
Input
Audio in
Filter
7
Input ch-1
5,6
AGND
RED
W1:A
YEL
W1:B
BLK
Tweeter
W1:C
Woofer
8R 30W
W1:D
12" 4R 200W
#7552
#7555
K
L
M
N
O
P
R2
1/4W
MC33079P
270R
.
U9:A
R1
100K
R4
.
1/4W
MC33079P
270R
.
U9:B
R33
1/4W
MC33079P
270R
.
U9:C
5
PHONES
J3
T
R
S
6
-
-
-
R6
1/4W
10K0
.
3923
R57
C31
LINE OUT
1/8W
22U
50V
681R
FLMP
J4
R64
C47
1/8W
22U
50V
681R
S1:A
S1:B
FLMP
UP
UP
R20
1/4W
GND / LIFT
10K0
.
DOWN
DOWN
ICE50SAX2
1
Vd aux
DC/DC
Rectification
2
GND
EMI
Converter
and
3
FILTER
with
Vs aux
Fitering
isolation
Output
Vo ch1
stage and
GND
Filtering
ch.1
MECC
Audio out
Control and
HCOM
Output
Modulation
Vo ch2
stage and
GND
Filtering
ch.2
AGND
Product
SB112
INPUTS
PCB#
M1505
Sheet
Date:
Mon Dec 08, 2014
Rev:
V04
YsType: YsType
Filename:
M1505V04sch.sch2006
N
O
P
Q
1
2
3
4
5
6
7
P103
8
9
P104
10
1
of
3
11
Q
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