bias diode
– not shown
in actual location
1
7
6
5
4
3
2
8
1.5K
47
0
power tube socket
– not
drawn to scale or in
actual location
Anode
Cathode
BASS
2
1
FOOTSWITCH
3
M E
G
5 0K
SPEED
INTENSITY
1
0
0
K
.022
µF
630V
1
7
6
5
4
3
2
8 9
1
7
6
5
4
3
2
8 9
V1
V2
+
+
2
.7
K
2
2
µ
F
5
0
V
+
2
2
0
K
8
.2
M
.0
1
µ
F
6
3
0
V
.0
1
µ
F
6
3
0
V
T1
T2
T3
10
µF 100
V
+
1
.5
K
Step 10:
Wire it up.
Front Panel Controls
1) Connect the footswitch Jack “tip” lug to T1(4).
2) Connect the 50K pot “wiper” lug to T2(5).
3) Connect the 50K pot “hot” lug to T3(1).
4) Connect the 3M pot “hot” lug to one of the .01µF feedback capacitors as shown.
5) Connect the switch side of the .022µF front panel capacitor to the circuit board where V1 pin 1 is connected.
In
some amps, it is important to run the path of this wire very close to the chassis and circuit board.
V1 Connections
1) Connect V1 pin 2 to the other .01µF feedback capacitor on the circuit board.
2) Connect that V1 pin 2 connection on the circuit board to T1(2).
3) Connect V1 pin 7 with two wires to T1(5) and the circuit board where the two .01µF feedback capacitors are connected together.
4) Connect V1 pin 8 to T3(4).
Circuit Board Connections
1) Connect T2(1) to the 8.2M resistor where it connects to V1 pin 6 on the board as shown.
2) Connect T2(4) to the circuit board where the 8.2M and 220K resistors connect.
3) Remove the one end of the 220K resistor from it’s board connection with V2 pin 6 and connect a wire from this end to T3(1).
4) Connect a wire from the circuit board connection with V2 pin 6 to T3(5).
Power Supply Connections
1) Connect the anode side of the solid state bias supply diode to T1(1).
2) Connect pin 6 from the closest octal power tube socket to the circuit board where the 8.2M and 220K resistors connect.
Step 11:
After wiring any circuit, it is a good idea to double check your work.
If you have double checked your connections and are still having problems getting the tremolo effect to work, send an e-mail to
[email protected].
Due to the nature of this circuit, there may be some audible clocking noise present.
“sleeve”
(ground)
“tip”
“cold”
“wiper”
“hot”
1M
3M
1
5
1M
1
0
0
K
.1
µF
630V
1
5
22
µF 50
V
100K
5
1
2
2
0
K
17