Hello, new member, first time poster. I found a thread like this while searching but I have more questions.

I wish to add a mid-range scooping function to the tone knobs on my guitar (currently there are 3 250k pots, one for volume and the other two have caps on them for rudimentary tone control, but I dont like them.) First I looked into the Twin/bridged-t but I'm wondering if perhaps a resonant filter would be better? I am looking for variable Q and variable notch frequency.

I believe in the resonant type design, a variable capacitor should achieve the frequency adjustment, but where would the pot go to vary the Q, without affecting the frequencies I wish to leave be? And in the bridged-T (see http://www.geofex.com/Article_Folders/EQs/paramet.htm at the very bottom) would the two R's vary the center frequency?

I'm still rather new at this, been reading books from the library for 2 or 3 weeks (later today I am going to practice my vector maths.) Apparently varying the ratios in the Twin-T circuit has a negative effect on the Q (or do the C's vary the frequency and the R's vary the Q?)

I would really appreciate any input on this. Thanks.

I wish to add a mid-range scooping function to the tone knobs on my guitar (currently there are 3 250k pots, one for volume and the other two have caps on them for rudimentary tone control, but I dont like them.) First I looked into the Twin/bridged-t but I'm wondering if perhaps a resonant filter would be better? I am looking for variable Q and variable notch frequency.

I believe in the resonant type design, a variable capacitor should achieve the frequency adjustment, but where would the pot go to vary the Q, without affecting the frequencies I wish to leave be? And in the bridged-T (see http://www.geofex.com/Article_Folders/EQs/paramet.htm at the very bottom) would the two R's vary the center frequency?

I'm still rather new at this, been reading books from the library for 2 or 3 weeks (later today I am going to practice my vector maths.) Apparently varying the ratios in the Twin-T circuit has a negative effect on the Q (or do the C's vary the frequency and the R's vary the Q?)

I would really appreciate any input on this. Thanks.

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