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Re: Pease tuneable MFB band-pass filter


 

On Sun, May 11, 2025 at 04:21 PM, John Woodgate wrote:
I have uploaded the above as a .ZIP. According to Bob Pease, the gain at the peak should be close to 34 dB, independent of the tuned frequency.
Then he must hav ereferred to a different circuit, maybe one with two variable elements, as used in the George Massenburg parametric EQ.
I don't get either of those results using version 24.1.8.
Neither do I.
However, the bandwidth is fairly constant with frequency, as predicted.
That's not what I see. I see the BW narrowing a
I can't believe Bob Pease reported the performance in error.

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