Infinity BU-2, Technical Manual

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Powered Subwoofer BU2
POWER SCHEMATIC 230V VERSION
5
5
4
4
3
3
2
2
1
1
A A
B B
C C
D D
E E
F F
G G
C28 .068uF
47.5K
1%
R55
P2
20K1%
4.99K1%
R64
22.1K1%
R63
10K
R67
R47
1K
R45 22K
RLS4148
D1
1
470 R57
D17
RLS4148
10K&25degC
TH1
10K
1%
R29
22uF/63V
C18
0.1/5W
1%
R43
470-1W
R37
22uF/63V
C34
C21
0.1uF
Q16
TIP32C
R42
5.6K
DZD15-TB
Z2
C12
150PF
47K
R23
C27
0.01uF/200V
C26
0.01uF/200V
IC1:B
+
5
0.01uF/1KV
C29
7.5K R34 4.3K
R33
R35 10K
RLS4148
D8
RLS4148
D7
2SC2412K
Q11
DTC1
14TK
Q12
TI
D1
1N5401
D2
1N5401
D3
1N5401
D4
1N5401
6800uF/63V
C1
6800uF/63V
C2
0.1uF
C4
0.1uF
C3
0.1uF/100V
C5
R22 15K
0.1uF
C6
100
R5
Q4
TIP32E TIP31E
Q3
10K
R10
10K
R9
0.1uF
C7
2N5551
Q8
C10
100pF
R18
2.2K
47K R16
Q9
2N5401
C9
33pF 33pF
C8
R13
470
R17
100 R15
100
R21
7.5K
R20
7.5K
R19 15K
2N5551
Q7
R12
100
Q6
2N5401
R11
100
7.5K
R6
5.1K
R7
Q5
MPS2222A
100pF
C23
100pF
C24
470-1W
R36
22uF/63V
C36
5.6K
R41
C15 0.1uF
22uF/63V
C37
Z1
DZD15-TB
TIP31C
Q17
0.1uF/100V
C1
1
Q15
2N5401
5.1
R3
5.1
R4
TIP35E
Q1
R1
.1/5W
R2
.1/5W
Q2
TIP36E
C16
0.1uF
C25
0.1uF
4.7K
R38
C22
0.1uF
8.2K
R39
R58
4.7K
330uF/16V
C17
R60
100K
R61 47K
IN4002
D12
R52
10K
R53
4.7K
Q20
2N5401
R51
100-1W
10K
R46
RLS4148
D9
R8 10
L1
5.8uH
DTC1
14TK
Q14
10K R59
Q13
2SA1037K
R44
10K
RELA
Y
K1
RLS4148
D16
R30
11
.5K
1%
R27
10K
1%
R28
10K
1%
+
3
-
2
47uF/16V
C31
R48
1.8K
C14
.022uF
47K
R26
1.5K
R25
D6
RLS4148
DTC1
14TK
Q10
22uF/63V
C35
10K
1%
R56
R54
47.5K1%
IC2:A
4 8
+
3
-
2 10K
1%
R49
.047uF
C20
182K
1%
R62
1.18K1%
R65
R66
2.21K1%
C19
0.22uF
0.1uF C33
RLS4148
D10
R40 470
1M
1%
R31
D5
RLS4148
IC2:B
7
+
5
-
6
0.1uF
C39
0.1uF
C38
R32
47.5K
1%
100pF
C40
47K
R50
3300pF
C30
100pF
C41
R24
2.2K
C13
47uF/16V
R14
470
SW1
1.6A
F1
.
.
.
.
.
P1
20K1%
R69
3.65K1%
R68
18.7K1%
6800pF
C32
*
*
BU-2
POWER
BOARD
(230V
VERSION)
SER
VO
GAIN
N/C
TO
SHEET
1
AGND
AGC
OUT
TO
SHEET
1
1K@85C
AGND
TO
SHEET
1
AC2 CT AC1
TL072
IN
MUTE
FROM
SHEET
1
TO
SHEET
1
-
SPKROUT
-
+
PROTECTION
TO
SHEET
1
FROM
SHEET
1
INPUT
TL072
TL072
TL072
IC1:A
SER
VO
LEVEL
IN
N L
HI LO
MI1216
CRITICAL
SAFETY
COMPONENT
REPLACE
ONL
Y
W
ITH
SAME
TYPE
COMPONENT
230V/50HZ
2
7
3
6 4 5
4 8
2 1
1
TP2
TP1
1
7
6
1
THESE
VALUE
REPLACE
P1,P2.
NOTES:
*
4
OHMS
LOAD
WITHOUT
LOAD
-V
-15V
+V
-V
-15V +15V
0.485V
0.267V 1.2mV
0.273V
3.8mV 32.5mV
-15V
+15V
-15V
+15V
-15V
+V
-V
10.01V 5.915V
+15V