Effect of parallel resistor value on treble bypass taper rates

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BazPBazP Frets: 188
Would increasing the value of the resistor in parallel to the treble bypass cap give a more aggressive taper to the volume pot and will this increase or decrease the amount of treble in the tone at low volume settings?

I have a Strat with a 280k vol pot and a 680pF / 150k treble bypass on it - the balance of treble as I roll down the volume is just about perfect, but the taper is so slow that I need to roll the volume back to around 3 to get the clean up I get on about 6-7 with a 50s wiring setup.

I'm about to put a treble bypass on a Tele using the same 280k pot and I'm deciding what to try first from 470pF / 220k - 680pF / 150k or a mixture in this range?

Baz
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Comments

  • p90foolp90fool Frets: 6052
    In my experience the resistor really messes up the taper, I just use a 330pf cap on its own on Strats. 
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  • MegiiMegii Frets: 840
    Is it a linear taper pot you're using? If so, try using a log/audio taper with the same treble bypass values. I have 120K/1000pF on my strats, with 300K audio taper volume pots - yes the parallel resistor doe alter the taper, but with audio taper it works out about right for my taste. Would be way too slow to turn down with a linear taper pot though.
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  • ICBMICBM Frets: 27501
    BazP said:
    Would increasing the value of the resistor in parallel to the treble bypass cap give a more aggressive taper to the volume pot and will this increase or decrease the amount of treble in the tone at low volume settings?

    I have a Strat with a 280k vol pot and a 680pF / 150k treble bypass on it - the balance of treble as I roll down the volume is just about perfect, but the taper is so slow that I need to roll the volume back to around 3 to get the clean up I get on about 6-7 with a 50s wiring setup.

    I'm about to put a treble bypass on a Tele using the same 280k pot and I'm deciding what to try first from 470pF / 220k - 680pF / 150k or a mixture in this range?
    I find 680pF/220K as close to the 'perfect' values as I've yet found, bearing in mind that it does also vary depending on pickup, pot value and cable length/quality.

    Increasing the resistor value will give a steeper taper to the pot - closer to the unmodified taper - and more treble (relatively - because the treble is the same but the rest is quieter) at the same knob setting.
    "Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone."
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  • BazPBazP Frets: 188
    Cool - thanks gents - much appreciated!
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