Multistage filter design recommendations

Discussion in 'The Projects Forum' started by darkroom, Apr 2, 2015.

  1. darkroom

    Thread Starter New Member

    Oct 30, 2014
    Hi to all!

    I'm designing a multistage filter circuit to model a speaker cabinet frequency response, a typical 4x10 bass cab. From the frequency response I captured, I could implement three filters as follows:


    This case includes one HP filter (red) + Notch (cyan) + LP (yellow).

    This is a very crude approach I'm not considering Q, the exact frequencies I want,etc.

    What I want is some recommendation for designing this kind of circuitry where active filter stages are chained, as this is my first approach.

    If there are alternatives (ICs) or easy to setup digital-filters I would like to know.

    Thank you very much.
  2. OBW0549

    Well-Known Member

    Mar 2, 2015
  3. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    I can't offer advice on the filter construction, but it seems to me you could get a fair approximation to the required response using just two band-pass filters with the bands slightly overlapping?
    darkroom likes this.
  4. darkroom

    Thread Starter New Member

    Oct 30, 2014
    Yes that could be a first approximation, and later "refine" the response with additional stages.