Input Section
Section:
Product(s):
InputSection.SchDoc
M1939
2
10
Sheet
Of
PCB#:
Rev#:
Modified:
V05
File:
2022-04-08
EXMmobile
EML Rev#:
01
+12V_
-12V_
-12V_
FX_Out
FX_In
BusGnd FXaGnd
+5VFX
FX
FX.SchDoc
+15V-L
+Phantom
/12 2
W3:2
/12 4
W3:4
/12 3
W3:3
R216
PG
Grounds
Grounds
Chassis
/12
7
W3:7
DO-214AA
S
M
B
J
5
3
3
9
B
5V6
D16
DO-214AA
S
M
B
J
5
3
3
9
B
5V6
D46
W
1
0
0
100R
0805
R213
7
7
W6:7
/12
6
W3:6
/12 5
W3:5
/12
10
W3:10
/12
11
W3:11
7
6
W6:6
+5VFX
Grounds
+12V_
-12V_
Gnd_
+12V_
R334
R335
+12V_
-12V_
1
0
0
N
0805
5
0
V
C159
1
0
0
N
0805
5
0
V
C188
1
0
0
N
0805
5
0
V
C189
1
0
0
N
0805
5
0
V
C190
+Phantom
+Phantom
IG
IG
W100
4K99
0805
R20
2
5
V
1
0
U
5X5.5mm
C16
W100
4K99
0805
R25
W100
4K99
0805
R21
W100
4K99
0805
R26
2
5
V
1
0
U
5X5.5mm
C17
3.5mm JCK
4218
3
1
4
T
S
R
2
5
J4
2
5
V
4
U
7
4X4mm
C19
2
5
V
4
U
7
4X4mm
C20
W100
4K99
0805
R22
25V
10U
5X5.5mm
C18
XLR FEML
4010
Mic In
J3
Ch 3
1
N50
Ch3In+
1
N49
Ch3In-
1
N52
Ch3StInL
1
N51
IG
1
N70
Ch3StInR
W
1
0
0
4K99
0805
R223
2
5
V
1
0
U
5X5.5mm
C140
W125
47K5
0805
R225
W125
47K5
0805
R224
W100
4K99
0805
R222
BT_Audio
BT_AGnd
SG9
SG10
SG11
SG12
W100
4K99
0805
R244
W
1
0
0
4K99
0805
R247
W100
4K99
0805
R248
50V
270P
0805
C14
N39
N40
50V
100N
0805
C183
W100
475K
0805
R271
50V
100N
0805
C131
W100
100K0
0805
R52
Wake+
Wake+
MC33078
7817
SO8
3
2
1
-
+
U29:1
BT_Pair
S
2
:1
BT2_GND
BT2_GND
IG
IG
IG
Wake-
Wake+
AmpIn
W100
4K99
0805
R8
2
5
V
1
0
U
5X5.5mm
C6
W100
4K99
0805
R10
W100
4K99
0805
R9
W
1
0
0
4K99
0805
R11
2
5
V
1
0
U
5X5.5mm
C7
50V
150N
1206
C8
5
0
V
1
5
0
N
1206
C9
W100
4K99
0805
R15
W100
10K0
0805
R17
W100
10K0
0805
R18
4N7
0805
50V
C12
TL072
7669
SO8
3
2
1
-
+
U3:1
W
1
0
0
1M0
0805
R19
1
0
0
P
0805
5
0
V
C15
W125
47K5
0805
R16
W125
22K
0805
R14
33N
0805
50V
C10
330P
0805
50V
C11
Ch 2
ACJC9AV2L
XLR-PHONE
Input
4152
X3
S
H
X2
X1
+1/4
J2:1
ACJC9AV2L
XLR-PHONE
Input
4152
T
R
S
J2:2
TL072
7669
SO8
V
+
8
V
-
4
U3:3
-12V_
1
0
0
N
0805
5
0
V
C97
1
0
0
N
0805
5
0
V
C
9
6
1
N46
Ch2In+
1
N45
Ch2In-
1
N47
Ch2Inst-
1
N48
Grounds
PMLL4148
SOD80
D50
SG5
SG6
SG8
S
G
7
+12V_
5
0
V
1
0
0
N
0805
C83
W
1
0
0
475K
0805
R50
IG
Wake-
W
1
0
0
4K99
0805
R2
2
5
V
1
0
U
5X5.5mm
C2
W
1
0
0
4K99
0805
R6
W
1
0
0
4K99
0805
R3
W
1
0
0
4K99
0805
R7
2
5
V
1
0
U
5X5.5mm
C3
ACJC6AV2L
XLR-PHONE
.
4154
X3
S
H
X2
X1
+1/4
J1:1
ACJC6AV2L
XLR-PHONE
.
4154
T
R
S
J1:2
2
5
V
4
U
7
4X4mm
C4
2
5
V
4
U
7
4X4mm
C5
Ch 1
1
N44
Ch1In+
1
N41
Ch1In-
SG1
SG2
SG4
SG3
IG
IG
IG
BusGnd
Wake-
Wake+
Wake-
Wake+
AmpIn
BusGnd
IG
FXaGnd
FXaGnd
MC33078
7817
SO8
5
6
7
-
+
U29:2
W100
4K99
0805
R82
W100
1K0
0805
R85
W100
4K99
0805
R84
W125
249R0
0805
R81
M
B
50K
4433
T
B
Master
P5:1
0805
50V
47P
C39
AmpIn
AmpGnd
16V
22U
5X5.5mm
C13
W100
100K0
0805
R36
P5:2
1
0
0
N
0805
5
0
V
C99
1
0
0
N
0805
5
0
V
C98
Grounds
4140
LinkM
Male XLR
J6
LinkF
XLR FEML
4010
J5
MC33078
7817
SO8
3
2
1
-
+
U13:1
4
8
U13:3
W125
3K92
0805
R71
W125
22K
0805
R73
W125
3K92
0805
R77
W125
3K92
0805
R78
0805
50V
1N
C36
0805
5
0
V
1
N
C34
W
1
2
5
3K92
0805
R74
W
1
0
0
1K0
0805
R70
W
1
0
0
1K0
0805
R75
-12V_
1
N64
LinkIO-
1
N65
1
N71
L
in
k
G
n
d
SG13
SG14
W
1
0
0
100K0
0805
R98
+12V_
-12V_
W100
475R0
0805
R68
22U
5X5.5mm
16V
C160
W
1
0
0
100K0
0805
R94
SOT-23
J110
S
D
Q6
PMLL4148
SOD80
D35
W
1
0
0
475R0
0805
R112
50V
100N
0805
C181
W100
100K0
0805
R258
Wake-
50V
100N
0805
C182
W100
100K0
0805
R268
Wake+
MC33078
7817
SO8
V+
8
V-
4
U29:3
PMLL4148
SOD80
D12
3X3mm
1
U
5
0
V
C144
MC33078
7817
SO8
5
6
7
+
-
U13:2
W
1
0
0
4K99
0805
R72
W125
562R0
0805
R32
W125
1K21
0805
R69
LinkGnd
LinkGnd
LinkGnd
LinkGnd
LinkGnd
FXaGnd
BusGnd
Master
IG
IG
IG
BusGnd
LinkIO-
IG
IG
IG
LinkGnd
LinkGnd
LinkGnd
5
0
V
1
N
5
0805
C28A
W125
249R0
0805
R57A
W125
249R0
0805
R37A
W
1
2
5
200K
0805
R29A
50V
47P
0805
C23A
W100
20K5
0805
R55A
2
5
V
4
U
7
4X4mm
C21A
16V
22U
5X5.5mm
C27A
W100
100R
0805
R53A
W125
120K0
0805
R35A
W125
8K25
0805
R54A
82N
100V
0805
C24A
W100
4K99
0805
R38A
W100
10K0
0805
R30A
W100
10M
0805
R39A
5
0
V
1
N
5
0805
C25A
W125
249R0
0805
R46A
W100
4K99
0805
R59A
W100
4K99
0805
R48A
W125
120K0
0805
R56A
25V
10U
5X5.5mm
C29A
PMLL4148
SOD80
D4A
MC33078
7817
SO8
3
2
1
-
+
U30A:1
MC33078
7817
SO8
5
6
7
-
+
U30A:2
W125
562R0
0805
R58A
W125
47K5
0805
R40A
MMBT3906LT1
SOT23
7805
Q1A
W125
249R0
0805
R34A
W125
562R0
0805
R47A
W
1
0
0
10K0
0805
R28A
MC33078
7817
SO8
V+
8
V-
4
U30A:3
20K
4486
5C
Level
T
B
P1A:1
W100
2K0
0805
R60A
W100
1K0
0805
R41A
W100
2K0
0805
R43A
W100
10K0
0805
R61A
W100
4K75
0805
R42A
10N
1206
50V
C22A
1
0
0
N
0805
5
0
V
C31A
1
0
0
N
0805
5
0
V
C32A
0805
50V
33N
C26A
82N
0805
100V
C30A
249R0
W
1
2
5
0805
R64A
W100
475K
0805
R49A
W100
0805
10K0
R45A
1B
10K
4472
T
B
Shape
P2A:1
W
1
2
5
249R0
0805
R65A
+12V_
ChIGA
SOD80
PMLL4148
D6A
1B
50K
4471
EFX
T
B
P3A:1
W
1
0
0
4K99
0805
R66A
-12V_
-12V_
W
1
0
0
0805
1K0
R1A
RED
7033
Clip
LD1A
MMBTA14LTIG
SOT-23
7701
Q4A
W
1
0
0
10K0
0805
R33A
W100
1K0
0805
R31A
0W5
RLZ7.5B
7V5
D3A
PG
P2A:2
P3A:2
.
P1A:2
W125
8K25
0805
R83A
Grounds
Grounds
Grounds
Grounds
SOD80
PMLL4148
D11A
0805
50V
100P
C128A
0805
50V
180P
C143A
SPCR1A
2495
PMLL4148
SOD80
D32A
+15V-L
SOD80
PMLL4148
D2A
50V
100N
0805
C137A
W100
100K0
0805
R177A
50V
100N
0805
C170A
W100
100K0
0805
R239A
3V6
SOT23
D8A
1
N73A
ChOut
W100
0805
10K0
R91A
PreOut1A
PreOut1A
PreOut2A
PreOut2A
PreOut2A
PreOut3A
PreOut3A
BusGnd
ChOut
FX
VoutA
FX
FX
Wake-
Wake+
5
0
V
1
N
5
0805
C28B
W125
249R0
0805
R57B
W125
249R0
0805
R37B
W
1
2
5
200K
0805
R29B
50V
47P
0805
C23B
W100
20K5
0805
R55B
2
5
V
4
U
7
4X4mm
C21B
16V
22U
5X5.5mm
C27B
W100
100R
0805
R53B
W125
120K0
0805
R35B
W125
8K25
0805
R54B
82N
100V
0805
C24B
W100
4K99
0805
R38B
W100
10K0
0805
R30B
W100
10M
0805
R39B
5
0
V
1
N
5
0805
C25B
W125
249R0
0805
R46B
W100
4K99
0805
R59B
W100
4K99
0805
R48B
W125
120K0
0805
R56B
25V
10U
5X5.5mm
C29B
MC33078
7817
SO8
3
2
1
-
+
U30B:1
MC33078
7817
SO8
5
6
7
-
+
U30B:2
W125
562R0
0805
R58B
W125
47K5
0805
R40B
MMBT3906LT1
SOT23
7805
Q1B
W125
249R0
0805
R34B
W125
562R0
0805
R47B
W
1
0
0
10K0
0805
R28B
20K
4486
5C
Level
T
B
P1B:1
W100
2K0
0805
R60B
W100
1K0
0805
R41B
W100
2K0
0805
R43B
W100
10K0
0805
R61B
W100
4K75
0805
R42B
10N
1206
50V
C22B
0805
50V
33N
C26B
82N
0805
100V
C30B
249R0
W
1
2
5
0805
R64B
W100
475K
0805
R49B
W100
0805
10K0
R45B
1B
10K
4472
T
B
Shape
P2B:1
W
1
2
5
249R0
0805
R65B
ChIGB
SOD80
PMLL4148
D6B
1B
50K
4471
EFX
T
B
P3B:1
W
1
0
0
4K99
0805
R66B
-12V_
P3B:2
W125
8K25
0805
R83B
Grounds
0805
50V
100P
C128B
0805
50V
180P
C143B
50V
100N
0805
C137B
W100
100K0
0805
R177B
50V
100N
0805
C170B
W100
100K0
0805
R239B
3V6
SOT23
D8B
1
N73B
ChOut
W100
0805
10K0
R91B
PreOut1B
PreOut2B
PreOut2B
PreOut3B
BusGnd
FX
VoutB
PMLL4148
SOD80
D4B
MC33078
7817
SO8
V+
8
V-
4
U30B:3
1
0
0
N
0805
5
0
V
C31B
1
0
0
N
0805
5
0
V
C32B
+12V_
-12V_
W
1
0
0
0805
1K0
R1B
RED
7033
Clip
LD1B
MMBTA14LTIG
SOT-23
7701
Q4B
W
1
0
0
10K0
0805
R33B
W100
1K0
0805
R31B
0W5
RLZ7.5B
7V5
D3B
PG
P2B:2
.
P1B:2
Grounds
Grounds
Grounds
SOD80
PMLL4148
D11B
SPCR1B
2495
PMLL4148
SOD80
D32B
+15V-L
SOD80
PMLL4148
D2B
PreOut1B
PreOut2B
PreOut3B
BusGnd
ClipB
ClipB
3
2
1
-
+
SO8
MC33078
7817
U4:1
5
6
7
-
+
SO8
MC33078
7817
U4:2
V+
8
V-
4
SO8
MC33078
7817
U4:3
BusGnd
BusGnd
BIAS
2
5
+
3
-
4
1
SO16
LM13700MX
U19:1
BIAS
15
12
+
14
-
13
1
6
SO16
LM13700MX
U19:2
8
7
(VCC)
SO16
LM13700MX
U19:3
9
10
(VCC)
SO16
LM13700MX
U19:4
V+
11
V-
6
SO16
LM13700MX
U19:5
Vref2A
Vref2A
Vref2A
Vref3A
Vref3A
Vref3A
Vref3B
Vref2B
Vref2B
Vref2B
Vref3B
Vref3B
5
0
V
1
N
5
0805
C28C
W125
249R0
0805
R57C
W100
12K1
0603
R52C
50V
330P
0805
C23C
W100
12K1
0603
R51C
16V
22U
5X5.5mm
C27C
W100
100R
0805
R53C
W125
8K25
0805
R54C
5
0
V
1
N
5
0805
C25C
W125
249R0
0805
R46C
W100
4K99
0805
R59C
W100
4K99
0805
R48C
W
1
2
5 47K5
0805
R55C
25V
10U
5X5.5mm
C29C
MC33078
7817
SO8
3
2
1
-
+
U30C:1
MC33078
7817
SO8
5
6
7
-
+
U2:2
W125
562R0
0805
R58C
W125
562R0
0805
R47C
20K
4486
5C
Level
T
B
P1C:1
ChIG
1B
50K 4471
EFX
T
B
P3C:1
W
1
0
0
4K99
0805
R66C
P2C:2
.
P3C:2
P1C:2
W125
8K25
0805
R83C
Grounds
0805
50V
100P
C128C
50V
100N
0805
C137C
W100
100K0
0805
R177C
50V
100N
0805
C170C
W100
100K0
0805
R239C
82N
100V
0805
C24C
W100
2K0
0805
R60C
W100
1K0
0805
R41C
W100
2K0
0805
R43C
W100
10K0
0805
R61C
W100
4K75
0805
R42C
10N
1206
50V
C22C
0805
50V
33N
C26C
82N
0805
100V
C30C
249R0
W
1
2
5
0805
R64C
W100
475K
0805
R49C
W100
0805
10K0
R45C
1B
10K
4472
T
B
Shape
P2C:1
W
1
2
5
249R0
0805
R65C
0805
50V
180P
C143C
MC33078
7817
SO8
3
2
1
-
+
U2:1
TL072
7669
SO8
5
6
7
-
+
U3:2
1
N73C
ChOut
W100
0805
10K0
R113
PreOut3C
BusGnd
PreOut1C
PreOut2C
BusGnd
BusGnd
BusGnd
BBret
BusGnd
IG
IG
W100
15K0
0805
R277
W100
2K0
0805
R299
W125
3K32
0805
R296
W100
27K4
0805
R227
100V
100N
1206
C102
5
0
V
1
0
N
1206
C171
W100
27K4
0805
R276
W
1
0
0
15K0
0805
R280
W100
10K0
0805
R230
200V
SOD-323
D23
W
1
0
0
100K0
0805
R307
2
5
V
1
0
U
5X5.5mm
C175
T3906LT1
S
O
T
2
3
7805
Q38
W
1
0
0
100R
0805
R301
W100
15K0
0805
R286
W
1
0
0
10K0
0805
R300
50V
10N
1206
C134
W125
120K0
0805
R231
100V
100N
1206
C95
W
1
2
5
6K20
0805
R278
Bass Boost / Limit
MC33078
7817
SO8
V-
4
V+
8
U16:3
MC33078
7817
SO8
5
6
7
+
-
U30C:2
LM13700MX
SO16
BIAS
15
12
+
14
-
13
1
6
U24:2
MC33078
7817
SO8
5
6
7
+
-
U16:2
+12V_
+12V_
-12V_
BC847C
SOT23
Q37
LM13700MX
SO16
BIAS
2
5
+
3
-
4
1
U24:1
W100
4K99
0805
R283
W
1
0
0
100R
0805
R305
W
1
0
0
10K0
0805
R302
W100
20K5
0805
R285
W100
6K98
0805
R292
W100
10K0
0805
R291
MC33078
7817
SO8
3
2
1
+
-
U16:1
W125
562R0
0805
R304
W125
562R0
0805
R284
LM13700MX
SO16
V+
11
V-
6
U24:5
+12V_
-12V_
W
1
0
0
10M
0805
R303
5X5.5mm
25V
10U
C139
W100
6K98
0805
R298
W
1
0
0
10M
0805
R306
W
1
0
0
100K0
0805
R332
1
N80
BB
BBout
BBret
BBGnd
BBGnd
BBGnd
BT2_GND
IG
+12V_
PMLL4148
SOD80
D4C
W
1
0
0
0805
1K0
R1C
RED
7033
Clip
LD1C
MMBTA14LTIG
SOT-23
7701
Q4C
W
1
0
0
10K0
0805
R33C
W100
1K0
0805
R31C
0W5
RLZ7.5B
7V5
D3C
PG
Grounds
SOD80
PMLL4148
D11C
SPCR1C
2495
PMLL4148
SOD80
D32C
+15V-L
PreOut1C
PreOut2C
PreOut3C
1
0
0
N
0805
5
0
V
C31C
1
0
0
N
0805
5
0
V
C32C
+12V_
-12V_
Grounds
MC33078
7817
SO8
V+
8
V-
4
U30C:3
MC33078
7817
SO8
V-
4
V+
8
U2:3
LM13700MX
SO16
9
10
(VCC)
U24:4
LM13700MX
SO16
8
7
(VCC)
U24:3
5
0
V
1
0
0
N
0805
C172
5
0
V
1
0
0
N
0805
C177
BBGnd
BBGnd
BBGnd
BusGnd
BBGnd
BBGnd
Vref3A
Vref3B
BusGnd
Vref2B
Vref2A
BusGnd
Clipping
