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Influence of the resistor on the pot's taper

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  • #16
    Originally posted by eclecticsynergy View Post

    Thanks, freefrog. Your posts are always well-grounded in electronics.
    Very helpful for those of us with less understanding of it.

    It hadn't occurred to me that the taper would not be consistent at different frequencies.

    Adding a parallel cap & resistor treble bleed to a log pot results in a more linear taper, which many don't like.
    I think this is primarily what the OP was worried about.
    I'm curious - would adding such a treble bleed change the taper of a linear pot also?
    Would it become something like reverse-log, or would it just stay linear?
    You're welcome. :-)

    With a treble bleed made of a resistor parallel to a cap and added to a linear pot, yes, the resistor should change the linear response in a reverse log curve... and with its hi-pass effect, depending on its value, the cap might complicate the whole thing enough to make wrong any attempt of clear explanation. :-P

    For the fun, I share below another (hastily botched) "series" of sims illustrating how the response of a volume pot can vary with various values and uses of simple components. I've selected arbitrary values for the treble bleed variations but "you'll get the picture". :-)

    Click image for larger version

Name:	LogVolTrebleBleedOrNot.jpg
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    Duncan user since the 80's...

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