Suggestion for alternate value for cap

MadAsAHatter

MadAsAHatter

Well-known member
Hopefully I'll be getting back to my Matamp GT120 clone build soon. When I was first ordering parts I couldn't find a good source for the polystyrene caps on the Bass-Boost knob. I was going to sub polypropylene, but stumbled across some polystyrene yesterday. The place has all the exact values I need but one. I can go with a slightly higher or lower value, but not sure which to go for.

The values on the Bass Boost are:

390pf-820pf-1500pf-2700pf-4700pf-0.01uf

The 2700pf is the one they don't have. My choices are either 2200pf or 3300pf.
That should amount to slightly less or slightly more bass respectively. Given the other values, which of the 2 choices do you think would sit in the better spot for amount of bass in that position?
 
But between the two you posted I’d use 3300pF. The jump from 2200pF to 4700pF seems bigger than the others.
 
Just buy two of the 1500, 820, and 390 and use the extra to put all in parallel to get 2710.
Or if they have 470pF then use 2200pF + 470pF for 2670pF.
But between the two you posted I’d use 3300pF. The jump from 2200pF to 4700pF seems bigger than the others.

Brain fart and didn't think about putting them in parallel; duh....

It may be a little tight in that spot to fit 2 in parallel, but they should be able to squeeze in. They're cheap so I'll buy the 3300pf just in case.

Thanks!!
 
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