Samson D412, D415 Schematic
8
1
D
C110
22n
5
C112
VR2 TREBLE
4700P
**
6
R113
1K
C111
1000P
**
VCC+
5
POWER LED
LED 2 G
R167
1K
IC2B
TL074
7
R116
10K
C115
0.022uF
B50K
R114
5K6
R115
10K
VR3 BASS
B50K
13
12
C116
0.022uF
R117
10K
C113
4700P
C114
20P
IC2C
TL074
**
14
321
VCC+
2
3
VCC-
CLIP IN
D2
BAV99
C104
270P
R106
16K9
IC1A
MC4580
R161
82K
1
X2
INPUT
123
D
3
2
R101
1K5
R102
1K5
1
X3
LINK OUTPUT
C101
2500P
C102
2500P
R103
12K1
R104
12K1
R105
16K9
D1
BAV99
C103
270P
R168
10
X1
INPUT
R107
1K5
C105
1U
R162
10K
VR1 VOL
A100K
6
5
VCC+
T101
MMBTA06
R163
1K5
C106
10P
7
R108
IC1B
MC4580
16K9
OPT0
M65CL G (BLUE)
4
C107
100P
**
R109
C108
** **
R111
10
R164
10K
R165
1K5
9
33K
IC2D
TL074
T102
MMBTA06
1U
8
1K
R110
27K
R166
4K7
C151
10U/25V
R112
1K
C109
4700P
VCC+
CLIP LED
LED 1 R
C117
220n
R118
12K
76
C118
220n
R119
4.02K
C119
220n
2
3
R120
100K
IC2A
TL074
C
C133
R146
C132
3K3
10
R143
3K
6
5
R145
150K
9
R144
1K
270P
IC3C
TL074
IC4B
TL074
R147
12K
R150
R148
15K4
R149
10K
10K
R151
2.49K
C134
22P
R152
10K
9
10
IC4C
TL074
R154
3.57K
8
R153
3.57K
R155
4.99K
C135
0.015uF
2
3
IC5A
TL074
1
R156
4.99K
C136
0.015uF
6
5
IC5B
TL074
R157
4.99K
7
C137
0.015uF
9
10
IC5C
TL074
8
R158
4.99K
C138
0.015uF
R159
IC5D
TL074
14
100
R160
100
TO LF PA
TO HF PA
13
12
8
7
X4'
1
2
3
4
5
6
Title
A3
5
6
Auro D412 PreAmp
Number RevisionSize
7 8
1 4
Ver 1.5
fo teehS0102-voN-61:etaD
1000P
R121
12K
R122
43K
B
A
R123
R126
4K99
33K
10K(D415)
C120
0.12uF
C121
33n
1 2 3 4
R124
1K
**
2
3
IC3A
R125
TL074
1M
C122
0.1uF
C123
0.027uF
1
R127
15K
6
5
R129
1M
R128
1K
R130
15K
IC3B
TL074
C124
0.039uF
C125
4700P
7
IC1C
MC4558
R131
R134
39K
39K
C126
R132
1000P
1K
13
12
R133
1M
C139
0.1u
84
C140
0.1u
C127
2500P
14
IC3D
TL074
**
**
IC2E
TL074
11 4
C141
0.1u
C142
0.1u
**
IC3E
TL074
**
R138
R135
12K
0
6K8(D415) 49K9(D415) 0
R136
1K
13
12
IC4D
TL074
R137
1M
**
C143
0.1U
11 4
**
C144
0.1U
C128
820P
C129
1n2
14
IC4E
TL074
11 4
C146
0.1U
C145
0.1U
R139
R142
43K
47K
R140
1K
2
3
IC4A
R141
TL074
1M
**
IC5E
TL074
11 4
**
C148
0.1U
C147
0.1U
C130
820P
C131
470P
1
**
**
VCC+
VCC-
TO LF PA
TO HF PA
CLIP IN
C149
10U/25V
C150
10U/25V
C
B
A
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