BASS
2
1
FOOTSWITCH
3
M E
G
5 0K
SPEED
INTENSITY
1
0
0
K
.022
µF
630V
DEEP
BASS
2
1
VOL
TREB
BASS
1
7
6
5
4
3
2
8 9
1
7
6
5
4
3
2
8 9
V1
V2
+
+
+
Step 3:
Remove the bass channel
controls from the front panel.
1) Deep switch
2) Volume pot
3) Treble pot
4) Bass pot
DEEP
VOLUME
TREBLE
MIDDLE
BASS
TREMOLO
SPEED
INTENSITY
BASS
FOOT
SWITCH
Step 3 (MID version):
If your bass
channel has a mid control, leave the
last of the four pots mounted, but
completely disconnect it from the
circuit.
Disconnected
1
7
6
5
4
3
2
8 9
1
7
6
5
4
3
2
8 9
V1
V2
+
+
+
Step 4:
Mount new front panel
controls for tremolo circuit
1) DPDT slide switch
2) 3MΩ pot in place of the volume pot
3) 50kΩ pot in place of the treble pot
4) ¼” input jack in place of the bass pot
Step 5:
Make preliminary front panel
control connections.
5) Connect the Tremolo switch ground as shown.
6) Connect a 100K resistor from ground to the
3M pot “cold” and “wiper” lugs.
7) Connect the footswitch jack “tip” lug to the
tremolo switch as shown.
8) Connect the footswitch jack “sleeve” lug to
the 50K pot “cold” lug.
9) Connect a .022µF cap from Tremolo switch to
3M pot “hot” lug as shown (leave the switch lug
unsoldered for now – there will be a wire
connected here later).
“sleeve”
(ground)
“tip”
“cold”
“wiper”
“hot”
14