Microlab X3-2.1 Schematic
7654321
8
C8
1UF
5
7
9
11
C6'
104
5
7
9
11
*
C20'
104
+VCC
/25V
3
U2
U2
TDA7265
U3
16
-VCC
C7'
100UF
/25V
VCC
3
U2
U4
TDA7265
16
-VCC
C21'
100UF
/25V
C6
C7
100UF
104
4
R5
33K
8
R6
430
10
R5'
33K
2
R6'
430
C20
*
C21
100UF
104
4
R22
47K
R23
8
430
R23'
10
430
R22'
U3
47K
2
SP1
4 ohm
C5
224
R7
3.3
SP2
4 ohm
C5'
224
R7'
3.3
/25V
C19
224
R24
SP3
3.3
C18
562
Title
A3
Date: 27-Mar-2003 Sheet of
File: F:\huang bf\AN\Xa-2`.DDB Drawn By:
16 ohm
C19'
224
R24'
3.3
X3-2.1 SUBWOOFER
Number RevisionSize
SYSTEM
VR2
W100K
R9
2.2M
+VB
-VB
4x1N4004
C1'
0.1UF
8
4
C1
0.1UF
+VB
U1A
4558
2
3
R1
47K
-VB
U1B
6
5
R1'
47K
D5
1N4148
123
U5A
4558
C11
104
R20
R19
150K
27K
123
U4A
4558
C12
104
+VCC
D1D4
-VCC
1
7
C28
47UF
C22
4700UF
25V
C23
4700UF
25V
R10'
1M
R10
2.2M
R25
470/0.5W
R26
470/0.5W
R11100K
R21
27K
C2
682
R2
8.2K
C2'
682
R2'
8.2K
C13
224
6
57
C14
104
ZD1
15V
ZD2
15V
R8
15K
C4
VR4
B50K
VR3'
B50K
0.1UF
C03
333
C4'
0.1UF
C03'
333
C17
1UF
R3
3.3K
R4
6.8K
R3'
3.3K
R4'
6.8K
+VB
*
C29
R12
104
100K
8
R14
765
43K
U5B
4
4558
R13
10K
*
C30
104
-VB
C15
0.22uf
U4B
+VB
-VB
C24
100UF
25V
C25
100UF
25V
VR3
B10K
C16
0.22uf
R28
2.7K
LED1'
GREEN
D
C
B
A
RCA1A
R01
VR1A
1K
B50K
RCA1B
R29
RCA2A
15K
R01'
VR1B
1K
B50K
R29'
RCA2B
15K
C26
103/1KV
SW1
AC IN
1 2 3 4 5 6 78
R16
4.7K
R16'
4.7K
R29
C27
2.7K
0.1uf
R17
4.7K
C9
0.1uf
R18
100K
T1
D3 D2
D
C
B
A
L.M.An
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