Cobalt Drive

[uranium_jones]

Replace C14 with 33nF. For Keeley PHAT mod, add a switch that connects a 68nF in parallel with C14.

So, you're switching the value between 33nF stock and 101nF Phat? If so, could I do the same by wiring a 33nF and a 100nF to a spdt switch and connecting the two ends of the switch to the holes for C14? I'd have to think of how to make a switch that adds a capacitor in parallel but is an open circuit otherwise.

 

[fig]

maybe think of the poles sideways? not sure...brain must work more

 

[uranium_jones]

Wait I think I figured it out... Does this look right? This assembly replaces C14 via the two leads on the right.

 

[Chuck D. Bones]

You got it right!

 

[Urshurak776]

Not sure I understand this. If it’s open circuited, nothing would go through the tone pot?

 

[uranium_jones]

Not sure I understand this. If it’s open circuited, nothing would go through the tone pot?

If you're talking about the figure I just drew as replacing C14, then if the switch is open, the whole thing looks like 33nF between the two right leads. If the switch is closed, the two capacitors are in parallel so it's 101nF.

 

[Urshurak776]

If you're talking about the figure I just drew as replacing C14, then if the switch is open, the whole thing looks like 33nF between the two right leads. If the switch is closed, the two capacitors are in parallel so it's 101nF.

Got it! Thanks!