Schematics - Infinity ENTRA Service Manual

Entra Subwoofer
1 2
A
JK101
R137
Direct 3
15K4
2
B
Normal 1
JK102:A JK102:B
+ +
1 5
LCH R101 LCH
1K 1W
- -
2 6
SPEAKER SPEAKER
IN PUT OUT PUT
C
- -
3 7
RCH R102 RCH
1K 1W
+ +
4 8
R107
1K
D
R103
200K
R104
200K
R105
200K
R106
200K
E
F
G
H
1 2
Preamp Schematic
3 4
D103
1N4148
D104
1N4148
C110
C107 .1u 63V
220P 50V VARIABLE LPF
VR101:A VR101:B
R112
C102 7K5
20KB 20KB
10u 25V
4
2
R116
1 1 3 4
3
5K11
C105
11
220P 50V
TL074
IC101:A C113
C103 .47u 63V
10u 25V
C109
C106 R110
.1u 63V
220P 50V 7K5
D101
1N4148
D102
1N4148
3 4
5 6
R120
C114
16K9
.1u 63V
IC101:D
R117
6
R118 TL074
R109 R111
5 13
5K11 10K 21K5
7 14
15K
6 12 10
TL074
IC101:B
9
C108
C104
.22u 63V .022u 50V IC101:C
5 6
23
7 8
R127
10K
VOLUME CONTROL
C121
8
.1u 63V
0 R122
8
11K
3 2
TL074
2 1
1 3
TL072
3 1
R123 IC102:A
SW101 180 4
1K
VR102
PHASE SW
R124
C122
20KB
10K
.1u 63V
Q101
C1815
3
R136
R125
C118
10K 10K
C120
.1u 63V
10u 16V
L.L
BA4558
R121 4
IC103:A
D109
3 1N4148
10K
1
2
8 R126
220K
C119
C111
R129
22u 16V
220K
.1u 63V
R138
1K
7 8
10
9
R130
2K8
C128
CN101
C123 C125 6 100u 16V
.47u 63V .47u 63V 7
+15V
5
TL072
IC102:B
-15V
R131
C127
44K2 100u 16V
C124
1000u 16V
L.L
R128
R132 R135
180K
3K3 10K
GRN
R133
D110
3
100K
3 2
Q102 1
A1015
Q103 RED
A1015
R134
1 2
3K3
9 10
A
B
C
D
E
F
G
H