Some "beginner" questions about volume pot mods

[korus]

Originally Posted by Jef Bardsley

Yup. The taper of the Superpots was designed with the '50s mod in mind.

Wrong, sorry. The taper of RS Superpots was designed with the idea to use them as volume pot in guitar, no matter which wiring - 50s or modern - is used.

With RS Superpots treble bleed should be cap with resistor in series.That way resistor will prevent the cap changing pickups resonant peak but will not change the vol pots taper. The only downside is that with resistor in series you can make highs consistent in 2 ways

option 1. ( lower value of the cap )
10-8 and 4.5-1.5 is the same -> then 8-4.5 have less highs than with vol on 10
option 2. ( higher value of the cap )
10-8 and 8-4.5 is the same -> then 4.5-1.5 have more highs than with vol on 10

I set my RS Superpots with treble bleeds as option 1.

OTOH, if one is using regular audio taper pots then cap and res should be in parallel - resistor wired this way in treble bleed will 'slow down' roll off and bring it closer to linear taper - 500k vol pot should use 220k or 150k resistor, and 250k vol pot shold use 100k-130k res.

cap values : I use PAF style custom wound HBs 6.8k-8.7k, mismatched coils, so they are rather bright sounding compared to regular off the shelf pickups, hence cap values that I'm using for treble bleeds are 100pF - 560pF. I guess that for high gain warm sounding HBs cap can go to 1000pF-1200pF but not much more than that.

note : 1000pF = 1nF = 0.001μF etc

HTH