Microlab M-1000 Schematics
JACK1
FRONT R
JACK1'
FRONT L
BASS IN
C9 1UF
C001
221
C001'
221
R9
47K
R9'
47K
R11 8.2K
VR1B
B50K
R12
100K
VR1A
B50K
2
3
A
+VB
-VB
1
2
1
2
1
2
C23
104
U2
U3
+VCC
U5
-VCC
5
TDA2030A
4
3
5
TDA2030A
4
3
-VCC
C8'
100UF/25V
TDA2030A
5
4
3
+VCC
R7
33K
R7'
33K
C24
100UF/25V
SP1
6 ohm
C6
224
R8
3.3
SP2
6ohm
C6'
224
R8'
3.3
C22
C21
100UF/25V
104
R19
47K
SP3
6 ohm
C19
224
R20
3.3
+VB
U1A
4558
2
1
3
C1
R1
1UF
100K
-VB
U1B
6
C1'
R1'
1UF
100K
C11
104
8
47K
R13
1
U4A
4
4558
C12
104
D1
1N5402
D2
1N5402
7
5
R14
10K
+VCC
C25
3300UF
25V
C26
3300UF
25V
-VCC
R21
680/0.5W
R22
680/0.5W
C2
822
R2
8.2K
C2'
822
R2'
8.2K
C13
224
R15
10K
R3
3.3K
R3'
3.3K
+VB
-VB
U4B
C27
47UF
C28
47UF
C15
0.47UF
6
57
C14
104
ZD1
9.1V
ZD2
9.1V
VR2
B10K
R23
2.7K
R4
6.8K
R4'
6.8K
C16
0.47UF
-VCC
472
C4
0.22UF
C3
C4'
0.22UF
C3'
472
LED1
R17
22K
R5
22K
R5'
22K
C5
2.2UF
C7
C8
104
100UF/25V
R6
560
C5'
2.2UF
R6'
560
C7'
104
C18
22UF
R18
560
AC IN
JACK2
REAR R
JACK2'
REAR L
JK3
BASS
JK3'
CENTER
5
TDA2030A
4
3
5
TDA2030A
4
3
-VCC
2C8'
100UF
TDA2030A
5
4
3
1C8'
100UF
+VCC
1C7
104
SP4
6 ohm
2C6
2R7
224
33K
2R8
3.3
SP5
SP6
6 ohm
6 ohm
2C6'
2R7'
224
33K
2R8'
3.3
1C8
100UF
1C6
224
1R7
33K
1R8
3.3
SYSTEM
+VB
U6A
8
4558
VR3A
2C001
B50K
221
2C001'
221
VR3B
B50K
1C001
VR4B
221
(P4)
B50K
1C001'
221
VR4A
B50K
SW1
T1
C29
223
2
1
3
2R1
100K
2R1'
100K
3R1
100K
1R1
100K
2D1
1N5402
2D2
1N5402
4
-VB
U6B
6
7
5
6
7
5
U9B
1C11
+VB
104
U9A
8
2
4558
1
3
4
1C12
104
-VB
+VCC
2C25
3300UF
25V
2C26
3300UF
25V
-VCC
2C1
1UF
2C1'
1UF
3C1
1UF
1C1
1UF
A
2R9
47K
3R2
47K
2R21
680/0.5W
2R22
680/0.5W
2C2
822
2R2
8.2K
2C2'
822
2R2'
8.2K
2R9'
47K
1C2
822
1R2
8.2K
BASS OUT
TO C9
2ZD1
9.1V
2ZD2
9.1V
+VB
-VB
2R3
3.3K
2R3'
3.3K
1R3
3.3K
2C27
47UF
2C28
47UF
2R23
2.7K
2R4
6.8K
2R4'
6.8K
1R4
6.8K
2C4
0.22UF
2C3
472
2C4'
0.22UF
2C3'
472
1C4
0.22UF
1R5
22K
1C3
472
*
*
LED1
2C7
2C8
104
100UF
1
U7
2R5
22K
2C5
2.2UF
2R6
560
2R5'
22K
2C5'
2.2UF
2R6'
560
1C5
2.2UF
1R6
560
2
1
U8
2
2C7'
104
+VCC
1
U10
2
1C7'
104
-VCC
M-1000 / 5.1 SUBWOOFER
Microlab Technology Inc.
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