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2
3
POWER AMPS
A
PHANTOM SUPPLY
+51V_
+15V_MOD
R10
10K0
C47
C49
MMBT3904
B
C48
0805
0805
63V
0805
100N
SOT-23
RAD .2in
D4
C7
12V0
63V
C55
SOD-323
WOOFGND
10U
0805
C56
C57
D20
63V
0805
+27V_
SOD-323
100N
15V0
RAD .2in
C
-15V_MOD
LVGND_
FROM INPUT PCB
1
W1:1
9
N1017
D
LVGND_
PSGND_
H_In+
2
W1:2
9
N1018
3
W1:3
9
N1019
SILENT ON/OFF
+15V_
4
W1:4
9
HORNGND_
R19
N1020
W100
5
1K0
W1:5
9
0805
N1021
+27V_
-15V_
E
6
D8
W1:6
9
N1022
22V0
SOT-23
N1023
7
WOOFCLIP_
W1:7
9
N1024
8
W1:8
9
9
W1:9
9
F
+15V_MOD
R30
W100
15K0
0805
R35
39K
1210
2
+
G
R48
3
-
R51
W100
6K80
499R
0603
0805
WOOFGND
C28
-15V_MOD
470P
50V
R45
H
0603
W100
6K80
+15V_MOD
0603
C32
63V
R56
MC33078
MC33078
220N
6K80
8
6
-
7817
7817
U6:2
RAD .2in
0603
V+
R54
R55
7
U6:3
W100
W100
5
V-
1K0
1K0
+
SO8
SO8
0805
0805
4
R59
I
C37
C36
6K80
100V
0603
0603
47N
-15V_MOD
RAD .2in
WOOFGND
J
K
1
2
3
4
5
6
7
FROM POWER SUPPLY
+15V_
+/-15V_MOD
8
W2:8
8
+15V_MOD
+15V_
N1026
-177V_
7
8
W2:7
R64
N1027
+177V_
C50
W250
N1038
0805
6
10R
W2:6
8
1206
N1028
+26V_
7838
C41
5
Q4
63V
8
W2:5
100N
N1029
RAD .2in
4
PSGND_
8
W2:4
N1030
-26V_
C58
3
8
0805
W2:3
LVGND_
N1031
-51V_
-15V_MOD
C44
2
8
W2:2
63V
N1032
R73
100N
N1033
W250
1
RAD .2in
W2:1
8
N1039
C91
10R
-15V_
63V
1206
100N
-15V_
RAD .2in
PSGND_
-36VDC
SILENT_
R13
W100
2K21
D5
0805
SILENT ON/OFF
CDSF4148
D1005
R20
W125
-15V_
1M
0805
R22
C11
R29
C12
10K0
+26V_
63V
1206
D28
4K75
0805
2U2
0805
CDSF4148
RAD .2in
4PIN SMT
D1005
6668
3
C109
LTV-8141S
63V
4
100N
PSGND_
RAD .2in
U4:2
R36
PSGND_
W100
10K0
C116
0805
63V
C18
100N
+15V_MOD
RAD .2in
-26V_
100V
680P
+15V_MOD
R32
4K75
0805
R28
8
U2:1
2
-
7817
7817
W100
V+
4K75
U1
1
0805
U2:3
LM311
3
V-
+
7851
SO8
SO8
SO8
R34
R49
4
MC33078
MC33078
10K0
499R
0805
0805
-15V_MOD
WOOFGND
C29
R43
W125
1N
50V
47R
R47
0805
0805
MC33078
W125
6
7817
-
1M
C156
MC33078
R52
0805
7
2
-
7817
W125
4K7
5
1
U2:2
+
63V
0805
SO8
180N
3
U6:1
RAD .2in
+
SO8
R62
499R
0805
WOOFGND
-15V_MOD
4
5
6
7
8
9
10
C237
1U
50V
1206
D208
R264
R263
W125
W100
1K62
13K
D210
DO-214AC
ES1J
0805
C236
0805
403D
PSGND_
C238
R265
100N
50V
0805
1210
330R
1206
L202
U207
S 1
PSGND_
5
2
7974
D
S
7
1000UH
+51V_
S
LNK302G
8
S
D211
8211
MURA240
403D
2U2
250V
SMD8B
RAD 0.1in
+15V_LS
-177V_
C71
100V
680P
C92
3N3
0805
Q5
BC857C
SOT23
10N
Q7
7805
R21
Q9
C8
18K2
D
J110
0805
0805
SOT-23
S
SOT23
D7
U30
12V0
MC7815CT
SOD-323
+15V_
IN
OUT
HORNGND_
6872
C103
D16
63V
SOD80
4U7
PMLL4148
4X7MM .2in
C110
63V
PSGND_
4U7
D18
4X7MM .2in
SOD80
U31
PMLL4148
WOOFER AMP
IN
OUT
-15V_
MC7915CT
6871
MMBTA92
D23
R33
Q19
W125
8165
187K
SOT-23
43V0
0805
SOT-23
Q20
R270
R38
C15
R71
D
1206
18K2
J110
0805
187K
619K
SOT-23
0805
0805
S
WOOFGND
+15V_MOD
-15V_MOD
WOOFGND
+15V_LS
R40
15K0
+15V_MOD
0805
U3
IRS21844S
Q24
7
12
VCC
HO
SOT-23
MMBTA92
2
VB 13
+
8165
SO14
11
U7
VS
1
LM311
IN
D47
3
2
-
7851
SD
ES1J
4
SO8
DO-214AC
DT
COM 5
R72
R212
LO 6
4K75
10K0
3
0805
0805
VSS
-15V_MOD
WOOFGND
R76
4K75
C77
0805
R213
0805
18K2
0805
-177V@Q15C
R61
R80
R79
R67
W125
W125
W125
W125
41K2
41K2
41K2
41K2
0805
0805
0805
0805
WOOFGND
PSGND_
8
9
10
11
12
13
+15V_LS
D212
DO-214AC
ES1J
R145
R75
R69
W100
W100
W100
2K21
2K21
2K21
R1
0805
0805
0805
22K
R146
R98
R3
C241
0805
W100
W100
W100
1210
2K21
2K21
2K21
0805
0805
0805
C1
R147
R128
R148
0805
R5
W100
W100
W100
3K92
2K21
2K21
2K21
0805
0805
0805
0805
C3
R8
R9
R4
1210
270R
270R
270R
R7
0805
0805
0805
499R
0805
Q3
R68
R70
R74
HORNGND_
270R
270R
270R
SOT23
0805
0805
0805
R15
BC847C
R184
270R
0805
W100
25V
499R
C4
0805
25V
68U
BC857C
R14
Q6
SOT23
W125
C144
47K
0805
C6
50V
Q8
10P
1000V
1206
1206
R16
2K21
7805
0805
C10
SOT23
D6
0603
200V
Q11
D21
SOD-323
MJD340
DPAK3
7022
CDSF4148
D1005
C9
R27
R25
1210
R24
100R
100K
2K21
0805
1206
0805
-51V_
-51V_
HORNGND_
+177V_
Q14
AIKW50N65DF5
T0247
2511
R37
W250
22R
1206
D15
R39
W250
30V
10R
1206
SOD123
R280
R31
R41
-
187K
R215
C25
0805
R219
C24
4X4mm
ZD1
R46
10R
10R
10R
10R
10R
x 4
1206
18V0
1R0
1206
1206
1206
1206
1206
SOD-323
1206
-
R220
Wout@Q14C
R224
10R
10R
10R
10R
10R
x 4
1206
1206
1206
1206
1206
D17
ES1J
R282
Q15
DO-214AC
AIKW50N65DF5
T0247
2511
R283
+15V_LS
R50
W250
C89
22R
1206
1000V
D19
R53
1N
W250
10R
R281
30V
R57
C35
1206
SOD123
W125
4X4mm
C34
1M
1206
0805
-177V_
11
12
13
14
15
16
HORN AMP
+51V_
Q12
D
IRFP140N
N
R2
G
TO247
W100
6931
2K21
S
0805
D2
+26V_
D3
D1
C2
63V
12V0
16V0
SOD-323
10U
MURS360B
SOT-23
RAD .2in
SMB
Q2
R6
BDX53C
W250
TO220
6912
22R
R260
1206
W250
TP1
22R
1206
TP1
R11
R12
Spkr
0R47
0R47
C5
2512
2512
0805
4
4
N1035
R17
R18
C118
0R47
0R47
400V
2512
2512
2N2
+
TP2
RAD .2in
R261
TP2
W250
R186
22R
2R4
Q10
R23
-
1206
1206
W250
BDX54C
22R
6911
R267
1206
R268
-26V_
D10
2R4
47R
D9
1206
0805
C13
MURS360B
63V
D11
16V0
R269
SMB
10U
12V0
2R4
SOT-23
RAD .2in
SOD-323
1206
Q1
R26
P
Spkr
IRFP9140N
W100
2K21
TO247
3
4
6932
0805
C14
N1034
0805
HORNGND_
-51V_
PSGND_
C20
140V
3U3
RAD POLY
R44
C51
W100
340V
100R
3U3
0805
RAD POLY
#7455
0805
12" 4R
450WPGM
T810-600G-TR
R42
S2
N1036
L1
WOOFER+
2W00
Spkr
0R02
R65
R60
OARS
2
Q17
W4:2
4
C22
W250
W250
140V
100K
100K
2906
7915
3U3
1206
1206
486uH
D2PAK
Q18:1
RAD POLY
R63
C40
TO92
W250
1206
10R
N1037
1206
MBS4992
{Voltage}
L2
5190
C54
10U
5X7MM .2in
R66
R58
16V
W250
W250
C52
C31
100K
100K
HC1
1206
1206
1206
1
140V
3U3
PSGND_
CON_HOLE_128
RAD POLY
CHGND-Cap
W8
Horn+
Horn-
YEL
W7
BLK
HEATSINK
TP3
Woofer-
Woofer+
W3
RED
BLK
W5
POWER AMPS
Section:
NX55P-2
Product(s):
M1556
V02
01
PCB#:
Rev#:
EML Rev#:
Sheet
Modified:
2022-06-02
File:
Amps.SCHDOC
Tmp Rev:
14
15
16
17
A
B
C
W4:4
D
S1
#7461
1" 8R
40W
HORN
E
W4:3
F
G
Spkr
H
1
4
W4:1
I
J
K
4
7
Of
V028
17
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