P13
25K
CW
R93
R92
R91
R90
R95
R94
R96
R100
R99
R98
Z2
Z3
Z4
R97
220E
5W
3K3
1W
3K3
1W
10K
220E
220E
33E
3W
22K
1K
470K
T0.5A
AT1.6
Ceramic
T0.5A
1K
+G
+H
+F
+F
-G
-F
+HT
+B
+C
+D
+E
BIAS
C59
C57
C56
C54
C53
C52
C51
C50
C60
C62
C61
C58
C55
3300u
16V
100u
25V
1000u
16V
47u
450V
47u
450V
22u
450V
22u
450V
22u
450V
3300u
16V
100u
100V
4u7
100V
100u
25V
47u
450V
10V
40V
300V
TX2
gn
gn
gy
pu
gy
pu
4x
1N4007
2x
1N4007
1N4007
T3 - BC547
TX2 - TXM-50.4
STANDBY
HT FUSE
filaments
V1- V4
V5-V6
4
2
5
7
9
Z1
230V - T1.6A
100/115V - T3.15A
MAINS
POWER
ye
115 V
230 V
100 V
rd
gy
bk
or
bn
100E
100E
C65
C66
C63
C64
R105
R106
100u
16V
100u
16V
6,5V
bl
bl
4x
1N4007
to filaments
V4-8
R107
0,47E
3W
15000u
10V
15000u
10V
to filaments
V1-3
POWER SUPPLY
PAGE:
4 of 5
KOCH
GUITAR ELECTRONICS
Amersfoort
The Netherlands
DRAWN:
Dolf Koch
c
+HT
T3
Green
Red
2K2
2K2
2K2
1M
R103
R104
R102
R101
STANDBY
POWER
Copyright 2005, Koch Guitar Electronics
TWINTONE II
DATE:
25-07-2005
MARK
2.0
SERIAL NRS:
x1434 - x3070
