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Sims of generic crossovers vs. optimized?

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  • Sims of generic crossovers vs. optimized?

    I was talking to someone about crossovers today and trying to explain how generic crossovers don't typically provide a very pleasant response. I thought it would have been handy to show sims for a formula crossover vs. an optimized crossover for one of the more popular designs out there. I was wondering if any of you guys had anything like that.

    I'm trying to avoid helping him build speakers by just ordering a bunch of stuff and throwing it together (lol, what I normally do). I figured if I could show him how much an optimized crossover helps in one of the popular designs, I might disaude him from wanting to wing-it.

  • #2
    I did that several years ago. I can dig it up later, if you want.
    Don't listen to me - I have not sold any $150,000 speakers.

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    • #3
      Originally posted by johnnyrichards View Post
      I did that several years ago. I can dig it up later, if you want.
      If you don't mind, that would be a big help, I think it would be very educational for him.

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      • #4
        This is not exactly what you're looking for but it shows some real world examples of problems with off the shelf crossovers.

        Ron
        Some years ago I offered to help a co-worker build some speakers. I traded him some Peerless 850439 6.5" HDS Nomex woofers for some smaller woofers he
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        • #5
          Thank you Ron, that is helpful.

          [I had seen that thread b4, and forgotten about it.]

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          • #6
            I have an example image or two of what a stock crossover would have looked like:

            http://i.imgur.com/kde9GiL.png

            Versus the "optimized":

            http://i.imgur.com/cO6mIOX.png

            They were part of a larger writeup I did over on Reddit:
            https://www.reddit.com/r/diyaudio/co..._i_built_them/
            nothing can stop me now

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            • #7
              Originally posted by Dirk View Post
              I have an example image or two of what a stock crossover would have looked like:

              http://i.imgur.com/kde9GiL.png

              Versus the "optimized":

              http://i.imgur.com/cO6mIOX.png

              They were part of a larger writeup I did over on Reddit:
              https://www.reddit.com/r/diyaudio/co..._i_built_them/
              Nice comparison. Question: do either (or both) sims include any BSC?

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              • #8
                This is my take on the difference. https://youtu.be/_nMxDiwDl9U Do note that the lack of bass in the stock XO confused me, but this is partly real and partly the measurement becoming influenced by the gating below 300hz. You can even see a similar difference in Dirk's example. Sent from my SGH-I337M using Tapatalk
                https://www.youtube.com/channel/UCm2...oSKdB448TTVEnQ

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                • #9
                  Not exactly what you are looking for, but related. YouTube has Impulse Audio: Why not to use online crossover calculators.

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                  • #10
                    All very helpful, thank you. This was eye opening for him.

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                    • #11
                      Originally posted by Millstonemike View Post
                      Nice comparison. Question: do either (or both) sims include any BSC?

                      It's been a few years, but there wasn't much. Maybe 1-2dB in my XO. They're used very near the wall, on a large dresser, so they get a good bit of lift.
                      nothing can stop me now

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