1
1
2
2
3
3
4
4
D
D
C
C
B
B
A
A
Title
Number
Revision
Size
A4
Date:
31/05/2007
Sheet of
File:
M:\Projecten R&D\..\back_io.SchDoc
Drawn By:
220uF
C50
220uF
C51
GND
100nF
C52
100nF
C53
+15
-15
+15
-15
GND
1G
2+
3-
CN1
XLR
1K8
R1
1K8
R2
8K2
R3
8K2
R4
470pF
C1
470pF
C2
10K
R5
22pF
C3
2
3
1
A
8
4
U1A
LM833D
10K
R6
22pF
C4
GND
10uF
C5
-15
+15
D1
Diode 1N4148
+15
D2
Diode 1N4148
D3
Diode 1N4148
D4
Diode 1N4148
-15
100nF
C7
GND
100nF
C6
GND
channel1-sig
Channel 1
1G
2+
3-
CN2
XLR
1K8
R11
1K8
R12
8K2
R13
8K2
R14
470pF
C11
470pF
C12
10K
R15
22pF
C13
5
6
7
B
8
4
U1B
LM833D
10K
R16
22pF
C14
GND
10uF
C15
D11
Diode 1N4148
+15
D12
Diode 1N4148
D13
Diode 1N4148
D14
Diode 1N4148
-15
channel2-sig
Channel 2
1
2
3
4
5
CN5
con 5
channel1-sig
channel2-sig
BG1+
BG1-
GND
BG1+
BG1-
+15
+15
-15
-15
e2
Earth
GND
1
2
3
5
4
6
S1
SW DPDT
1
2
3
5
4
6
S3
SW DPDT
e1
Earth
1
2
3
CN13
Header 3
1
2
3
CN12
Header 3
GND
