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Tone controls

Discussion in 'Electronic Repair' started by [email protected], Mar 29, 2007.

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  1. Guest

    In another thread which google ½ FUBARed, tone controls were

    Pots are the best way to control audio.

    Now I never built this circuit but let me splain it. I want opinions,
    and number one is audio quality. cost does not matter.

    I wanted a bass control with extreme range and a continuously variable
    turnover. Rather than playing around with the geometry of the
    components I simply amplified the signal about 20dB, and resistively
    divided it back down, and sent it throught a low output impedance
    buffer. Put the R/C network at the slider and a rheostat determined
    the crossover frequency. At the time I figured getting tightly matched
    stereo pots was hard enough, I didn't need to complicate it.

    The specs boiled down (it took a while to do the math) to +-18dB from
    0Hz to a variable crossover of 44 to 484 Hz.

    I know idiots blow speakers if you give them a control like that, but
    I would still like to build one just for the hell of it.

    Can you still buy pots ? I'll take just about any resistance and build
    around it at this point.

    Actually my system is so flat from about 30-16,000 or so, I only want
    those extreme ends boosted, nothing else. Even a 12 band EQ will not
    do that.

    Can potentiometers still be had ? especially the audio taper ones ?

    The design is like a mixing filter and should suffer alot less phase

    But can I get the pots ?

  2. turnover.

    Have you seen "This is Spinal Tap"?
  3. A good parametric will. Yes, you can still buy pots.

  4. Dave

    Dave Guest

    "But you see, these dials go to ELEVEN!"
  5. Ross Herbert

    Ross Herbert Guest

    A Paraphase Tone Control may be the answer. There are numerous
    schematics around the web but one rather interesting project by Ton
    Giesberts in Elektor July/August 2006 looks promising. The article is
    available at a charge for direct download from the Elektor website and
    may save you a few headaches due to a pcb pattern being available.
  6. isw

    isw Guest

    Google "Baxandall tone control"

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