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+VCC
C7
JK1 C2 C8
R 682 104 100UF/25V
C4
VR1A
C1 B10K R2 0.22UF TDA2030A SP1
L 3.3K 5
0.47UF 1 4 ohm
D R8 D
4
R1 C03 2 U2
8.2K 3.3
223 R5 3 R7
24K C5 C6
33K
2.2UF 224
VR3A
C1' R8
B50K R6
C2' 3.3
682 510
C4'
0.47UF
R2' 0.22UF TDA2030A SP2
VR1B 3.3K 5
1 4 ohm
B10K 4 R8
R1' 2 U3
8.2K C03' 3.3
223 R5' 3
24K C5' R7' C6'
R9 2.2UF 33K 224
33K VR3B
B50K R6'
C R8' C
510 3.3
R9' -VCC
33K
C8'
C7' 100UF/25V
104
+VB
C11
C13
224
R11
8.2K 104 +VCC
C15
6 0.47UF
2
8 R13 39K R14 R15
10K 10K C21 C22
C9 5 7
104 100UF/25V
3 1 U4B TDA2030A
C16
U4A 5
4 1 SP3
C29 1UF 4558 VR2
C14 4 6 ohm
B 104 R12 B10K U5 B
104 0.47UF 2
100K R17
C12
3 C19
104 22K C18
R19 224
-VB 22UF
39K
R20
R18 3.3
560
+VCC C23 C24
SW1 R21 104 100UF/25V
D1 1N4004 +VB
T1 470/0.5W
-VCC
D2 1N4004 C25 ZD1 C27
AC IN
3300UF 9.1V 47UF
25V R23
D3 1N4004 2.7K
LED1
C26 ZD2
Title
A 3300UF 9.1V C28 A
M-890 SUBWOOFER SYSTEM
25V 47UF
-VCC Size Number Revision
R22
-VCC -VB
D4 1N4004 470/0.5W A4
Date: 25-Nov-2003 Sheet of
File: F:\my file\My Design\M-890.ddb Drawn By: WANGZHAO
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