Choosing Treble Bleed Values....

zozoe

New member
Hi all,, I'm just curious to know how the typical 470pf/250k's I see will behave any different from the 220k ones, & is the bleed I would use for a 6-7k single coil, the same one I'd use for a vintage wind P90? I totally get tone caps, & all of my pio tone caps are around .007's,,, yes, .007 +/- .001.. But these bleed add-ons are beyond me. Thnx in advance~
 
Thnx BeauB,,, I'll check it out tomorrow... maybe it'll give me some real world values for SC's and P90 & bucks,, but mostly typical Strat stuff.... peace
 
The treble bleed changes the curve of the volume pot. The ones with a resistor and capacitor in parrallel are intended to be used with an "Audio taper" pot. If you use a "Linear" pot, then a treble bleed with series resistor and cap is a better option.

I have also seen where suhr and fender use 2 resistors in series as part of the treble bleed. The capacitor connects to the joint between the two resistors and it is supposed to give a more subtle effect. In the case of Suhr, the second resistor added is 120k ohm.
 
I believe a cap-and-resistor-in-series type helps preserve the taper of audio/log pots better as well.
The cap-resistor-parallel type is said to screw up the taper on audio pots, and to make linear ones behave like audio taper.

FWIW, I haven't actually experimented with that personally.
But I've been curious about it, actually considered starting a thread on the subject.
 
I like a cap only because it's the simplest and sounds good. 1 or 200 pf is conservative and 3 or 400 pf will pump more highs across.
 
If you want to know for sure then wire up a 12-position rotary dial with different capacitors and use that for a day to find the right one. It's very cheap.
 
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