100u
25V
C25
100u
25V
C26
15n
C16
3K3
R26
1K
R22
150n
C14
3K3
R23
22K
R27
22K
R24
150p
C11
1/2
TLO72
U1
6
5
7
1/2
TLO72
U1
2
3
1
WC2
15K
R25
1N4004
D7
22n
250V
C34
IN
REF
OUT
7915
Q2
2
1
3
IN
REF
OUT
7815
Q1
1
2
3
IN
REF
OUT
7805
Q22
1
2
3
470U
63V
C4
100V
100N
C6
100V
100N
C8
27K
R43
2200U
50V
C3
TP
1N4004
D1
1N4004
D2
10K
R21
2N5401
Q6
D14
SW1
6A
F1
6A2
D4
680n
C10
680n
250V
C34.
6A2
D5
1/2
TLO72
U2
2
3
1
10K
R60
910R
R38
16V
500mW
D33
1K
R41
MJ21195
6910
Q15
1K5
5W
R39
BAV21
D21
33R
R11
1K5
5W
R42
0R1
5W
R54
0R1
5W
R52
0R1
5W
R53
1N4004
D20
0R1
5W
R51
BAV21
D13
FP
10R
R2
WC4
2R
2W
R5
1K
R44
1N4004
D19
BC560
Q9
BC550
Q8
20K
R45
20K
R49
18K
R47
18K
R48
100R
R67
MJ21196
6909
Q14
22n
C30
2K2
R37
D10
MJF15031
Q10
MJF15030
Q11
MJ21195
6910
Q13
10R
R63
MJ21196
6909
Q12
BC550
Q3
BC550
Q4
D9
D15
2K
R31
100R
R46
4u7
25V
C36
100R
R50
16V
500mW
D30
D11
22n
C29
T3,15AH
D18
10K
R59
CW
LIN
470R
R74
4K7
R36
D17
D16
D12
4.7V
1N750A
D29
10K
R20
100n
C15
47K
R10
10K
R12
330K
R40
68U
16V
C12
470R
R17
4V7
1N750A
D32
4V7
IN750A
D31
20K
R13
1K
R14
22K
R15
680R
R18
150K
R16
DIAC
MBS4992
8V
Q19
100n
C21
2K7
R58
SHEET OF
NAME:
PCB#&VER:
MODELS:
SCH VERSION:
TITLE:
DATE:
1.90
325W_PWR-AMP
APR/27/06
M1181.SCH
325WATT
POWER-AMP
M1181
5uH
L1
1R8
5W
R57
100K
R19
2R
2W
R4
100n
C22
MT1
MT2
G
BT139
Q18
6800u
80V
C1
6800u
80V
C2
100n
C23
39K
R32
10K
R33
390RFP
R30
390RFP
R29
1K
R28
15p
C18
15n
C19
150p
C20
1KFP
R35
S
R
T
OUT-A
NO-GOLD
JB1
1
2
3
4
5
6
S
R
T
OUT-A
NO-GOLD
JB2
1
2
3
4
5
6
100n
C24
10U
63V
C9
1/2
TLO72
U2
6
5
7
22K
R1
22U
50V
C40
6A2
D6
6A2
D3
10K
R73
2K2
R61
BC560
Q20
100n
C31
D22
10R
R62
WC1
EY8
BC550
Q5
22K
R75
22K
R71
4u7
63V
C7
2
MJE15030
MJE15031
E
C
B
1
1N4004
D8
7805
7815
O
R
I
1N4004
D34
100V
100N
C5
D27
22n
C33
4R7
0.5W
R70
4R7
0.5W
R69
10
9
8
7
6
5
4
3
2
1
#
DESCRIPTION OF CHANGE
VER#
DATE
MODEL(S):-
Q13,Q15_#6927->#6910
PC#7106_Q12,Q14_#6900->#6909
1.90
APR/27/06
12
SEP/29/03
AUG/14/03
MAY/29/01
.
JAN/15/01
.
NOV/15/00
JUN/01/00
MAY/18/00
JAN/25/00
1.70
1.60
1.50
.
1.40
.
1.30
1.20
1.10
1.00
PC#6628_C37_1u/63V->4u7/63V
PC#6623_ADD_D36_BAT85
PC#6380_ADD_C42-R81
CE_FUSE_T3A->T3,15AH
CE_XFMR_BUILT_IN_BREAKER_#1251FE
CORRECTION_R55-R31
PC#6306_U1_MUST_BE_TEXAS_INSTRUMENT
R65_470K->220K
CORRECTIONS
MADE_FROM_M1107_FOR_6CHANNEL_BOX_MX
325WATT_POWER_AMP
M1181.SCH_DATABASE_HISTORY
R22->1K,R25->15K,C10/C41->680N
PC#6467_R15->22K,R17->470R,R80->2K7
PC#6466_R72_NSL-28A->NSL-325R2
1.80
NOV/06/01
11
NSL325R2
R72
4n7
250V
C35
OUT
IN
SW2
16V
10U
C27
MC1
7
MPS4991
T2
NC
T1
TO_FRONT_PANEL
MC1
5
MC1
6
MC1
12
MC1
11
MC1
8
MC1
9
MC1
10
43V
IN5260B
D37
BDX53C
Q21
BC550C
C B E
BC560C
VIEW
BOTTOM
MJ21195
E
MJ21196
4n7
250V
C35-
BT139
G
MT1
MT2
MPSA06
E B C
.
22R
5W
R8
MPSA06
Q7
4u7
63V
C32
2R
2W
R6
2R
2W
R7
1N4004
D35
120VAC
60Hz
XXXVA
PT#1251
120VAC
60Hz
XXXVA
BC550
Q16
BDX53C
E
C
B
680n
C41
2K7
R80
63V
4u7
C37
NC
COM
NO
K1
1
3
4
6
C+
C-
K1
2
5
1N4004
D24
1N4004
D25
10R
R55
220K
R65
47K
R56
D23
33u
C17
4K7
R34
.
7915
O
I
R
100K
R81
INTERNAL
10u
16V
C42
BAT85
D36
+15V
+15V
+15V
+15V
U2.V-
U2.V-
+28V
AMP-OUT
AC_WHITE
ASIG
IG
IG
AREF
+40VPS
DIGND
DIGND
AC_BLACK
U2.V+
U2.V+
U_GND
PSGND
+5VIN
+5VIN
-15V
-15V
-15V
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
LVGND
PT#1251FE
TL072
TEXAS INSTRUMENT
U1 MUST BE A
230V/245VAC
VA
0V
245V
230V
MC1->4 NC
YEL
YEL
GRY
RED
RED
RED
RED
GRY
GRY
GRY
BRN
BLK/BRN
BLUE
POWER SUPPLY
NORTH AMERICAN
EXPORT POWER SUPPLY
CHASS GND
BLACK
BLACK
+71V
+71V
-71V
-71V
+71V
+71V
-71V
TP1 AND TP2
NOTE:ADJUST RT1 FOR 3mV BETWEEN
TEST POINT
NOTES:
ON PCB BREAKAWAY.
PHANTOM POWER PARTS ARE LOCATED
BREAKAWAY PCB
BYPASS CAPS
ALL UNMARKED DIODES ARE IN4148
TO PIN 4 OF U2
TO PIN 4 OF U1
TO PIN 8 OF U1
TO PIN 8 OF U2
POWER ON
CHASSIS GND
FENDER
BACK PANEL
JACKS ON
WITH OUTPUT
B
