Crossover slopes explained

October 28, 2021
 by Paul McGowan

8 comments on “Crossover slopes explained”

  1. Err…yup!
    That’s pretty much it.

    You can mix ‘n match too.
    For example, you can have a 3rd order section of crossover
    between the tweeter & the squawker & a 1st order section of
    crossover between the squawker (mid-range driver) & the woofer.
    It all depends on a heap of other design parameters.

  2. Excellent layman’s video!
    In my earlier IT career, someone asked what a PCMCIA card was (because their notebook had a slot labeled as such.

    The answer is that is an acronym, and means: “People Can’t Memorize Computer Industry Acronyms” 😉

  3. Sounds good to me Paul! Fortunately it corresponds to my recollection of the concept. 😉 Although you did refresh my memory of a little side fact (factoid?) that you slipped in there. The fact that an ‘octave’ is spanned by a doubling of the frequency. A nice little fact to keep in mind, I think, when imagining, for example, what frequencies a speaker is capable of reproducing.

    Good work again Paul! 🙂

    1. Well, Paul describes a frequency response graph that is essentially a straight line. This is only the case in a typical HP or LP filter if both the amplitude and frequency axes are plotted as a logarithmic scale. Amplitude is normally in dB, so the vertical scale is implicitly logarithmic. The horizontal frequency scale is normally explicitly logarithmic, so that the span from 10-100 Hz is the same as 100-1000 Hz and 1000 Hz to 10 kHz. So yes, i think I do understand the dB scale.

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