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+27V
R167
R168
W100
W500
220
10K0
MIXER SECTION
0805
1210
C94
R170
RAD .2in
W100
10K0
50V
0805
22U
IGND
C107
R181
R174
W125
W125
MIC INPUT
562R
249R0
+15V
50V
0805
1206
22U
C108
J4
RAD .2in
2
0805
8
-
V+
N1013
XLR FEML
U28:3
4010
V-
+
3
IGND
C101
4
C98
0805
R173
R182
-15V
N1014
W125
W125
562R
249R0
50V
R185
0805
1206
22U
2K49
RAD .2in
0603
IGND
LVGND
LVGND3
R190
W100
1K0
0805
3921
J6
C138
5
0603
R205
N1015
4
W100
10K0
0805
IGND
RING
C129
R209
0603
W100
R203
10K0
3921
0805
W100
J5
1K0
5
0805
N1016
R189
4
W100
10K0
0805
RING
R196
W100
10K0
IGND
0805
FROM MIXER
MIXER1
6
OUTPUT
U16:2
MIXER2
-
NE5532D
2
7
3
N1010
J1
1
N1011
R93
R94
7903
+
5
W100
W100
4100
475R0
10K0
INPUT
0805
0805
C65
D26
J2
CDSF4148
63V
D1005
100N
4010
RAD .2in
N1060
IGND
.
R103
5
1M
C67
0805
0603
4
J3
IGND
RING
R109
R108
C72
10K0
1M
1/4in JCK
0603
0805
0805
R110
W125
3921
681R
0805
+15V
IGND
.
5
2
8
U16:3
U16:1
-
V+
1
4
J7
V-
R113
R114
7903
+
3
W100
W100
NE5532D
4
475R0
10K0
RING
0805
0805
-15V
1/4in JCK
C76
D30
3921
100N
63V
W6
CDSF4148
RAD .2in
D1005
STRANDED GRN BASE YEL STRIPE
BLK
CHASSIS GROUND
IGND
18AWG
MADE THROUGH
3949
1/4" INPUT JACKS
C99
R175
R172
NE5532D
3
W100
W100
DUAL OPAMP
+
2K49
1K0
7903
C95
33U
R171
P2:1
1
0603
0805
47K5
16V
U28:1
0805
M
4432
RAD .2in
-
2
63V
10K
NE5532D
NE5532D
U32:1
100N
MIC GAIN
1
R177
RAD .2in
W100
B
7903
7903
18K2
P2:2
DUAL OPAMP
DUAL OPAMP
0805
R178
C97
82R
33U
LVGND3
0805
16V
RAD .2in
+15V
C126
R191
R160
5
W100
W250
+
10K0
4K7
16V
0805
1206
33U
RAD .2in
-
6
LINE/CD
P4:1
6
NE5532D
-
B
U28:2
-15V
7
10K
R199
4432
7903
+
W100
5
DUAL OPAMP
1K0
R197
0805
47K5
0805
R201
82R
0805
P4:2
C128
R207
10K0
0805
-15V
LVGND4
33U
16V
RAD .2in
LVGND4
MAIN INPUT
MASTER CLIP
MMBTA14LTIG
R119
W250
SOT-23
100K
1206
D46
R120
D45
R92
CDSF4148
W100
681R
CDSF4148
C62
D1005
18K2
0805
D1005
0805
100P
50V
0805
LEDGND
R95
W125
562R
D1005
6
1206
U17:2
-
NE5532D
7
R248
+15V
7903
+
5
3K01
0805
3
8
R111
+
LimitLED
7903
W125
V+
1
562R
U17:3
C73
1206
Level
V-
-
NE5532D
2
100P
50V
4
U17:1
0805
+15V
P1:1
-15V
P1:2
M
10K
10N
C157
LVGND
B
100V
R249
C119
RAD .2in
W125
ToAmpInputs
0805
4434
3K01
0805
R250
AmpInpGnd
-15V
3K32
0805
C135
LP1
LP2
LP3
0805
LVGND1
LVGND1
2497
2497
2497
R169
W100
6K80
C96
0603
3
DUAL OPAMP
+
7903
100V
1
68N
RAD .2in
-
NE5532D
2
U29:1
R179
30K0
0805
R188
10K0
LVGND3
LVGND4
0805
R195
8
DUAL OPAMP
W100
7903
10K0
V+
R200
7
0805
U32:3
W100
V-
10K0
+15V
NE5532D
0805
U32:2
4
U29:2
6
8
NE5532D
-
V+
R206
7
U29:3
W500
V-
220
7903
+
5
1210
DUAL OPAMP
4
+15V
-15V
LVGND4
C120
C121
LVGND5
0805
0805
C132
C133
0805
0805
LVGND4
LD2
R107
+15V
W125
1K54
Q21
RED
0805
7033
C74
.
7701
0805
D31
CDSF4148
D1005
+15V
D35
CDSF4148
LD3
YEL
7032
.
R153
1K54
LIMITER SENSE
0805
R157
Q22
W100
1GXX
10K0
BC847C
R163
0805
SOT23
47K5
0805
LEDGND
LVGND1
LVGND
LD4
R164
+15V
W125
1K54
GRN
0805
7031
LEDGND
.
3 x #2497
C127
47N
25V
0805
P3:1
R192
R193
W250
T
B
W250
4K7
50K
B
4K7
4435
1206
1206
C130
BASS
47P
100V
0805
R198
R204
W100
R194
47K5
470K
W125
+15V
0805
0603
330R0
C139
0805
LVGND5
2
8
U33:1
-
NE5532D
NE5532D
16V
V+
P3:2
33U
P5:2
1
U33:3
RAD .2in
C140
V-
7903
7903
+
3
0805
R202
DUAL OPAMP
DUAL OPAMP
4
W125
1K54
0805
-15V
P5:1
R210
R211
LVGND5
W125
T
B
W125
1K21
4434
10K
1K21
B
0805
0805
TREBLE
5
DUAL OPAMP
+
7903
7
LVGND5
-
NE5532D
6
U33:2
+15V
SILENT MIXER ON/OFF
D13
Q16
R246
MMBT3906LT1
W100
SOT23
7805
15K0
22V0
0805
SOT-23
D63
CDSF4148
D1005
R247
K1:2
1K0
0805
-15V
RELAY 1C
3696
3696
RELAY 1C
R176
1K21
K1:1
0805
Alternate
Alternate
DOWN
NO
DOWN
NO
S5:1
COM
COM
S5:2
DPDT MINI
UP
NC
MIXER
NC
UP
DPDT MINI
MIXER
MIXER2
MIXER1
TO MAIN INPUT
INPUT
Section:
NX55P-2
Product(s):
PCB#:
M1557
Rev#:
V03
Eng:
T. Wood
Sheet
2
Of
Modified:
2022-11-02
File:
Input.SCHDOC
5
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