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CBT36 clones .. sort of

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  • #16
    Re: CBT36 clones .. sort of

    What's the cc of the tweeters.

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    • #17
      Re: CBT36 clones .. sort of

      Originally posted by Wolf View Post
      Comb filtering would not allow any kind of decent treble response from the mids only. Now- if the drivers had an inherently rising response up to and past 20Khz, then it could possibly comb-filter the response back to flat destructively. I have seen this happen in one instance, and it was not bad.

      Later,
      Wolf
      And which array was that if you remember?

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      • #18
        Re: CBT36 clones .. sort of

        Originally posted by rhubarb9999 View Post
        I did not notice much comb filtering with just the mids playing. The curve helps reduce this. With a good bit of EQ, the mids can sound OK .. but the tweeters really help.
        Thanks.

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        • #19
          Re: CBT36 clones .. sort of

          Originally posted by Dewmiester View Post
          What's the cc of the tweeters.
          Like, 5/8", in the kit form.
          Wolf
          Last edited by Wolf; 10-01-2014, 04:12 PM.
          "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
          "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
          "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
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          • #20
            Re: CBT36 clones .. sort of

            Very nice work!
            I see that you have a straight array behind the curved one. Could you talk about the imaging differences and the size of the virtual image on these?
            Also, have you tried or planing in the future to RTA the in room response?
            http://www.diy-ny.com/

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            • #21
              Re: CBT36 clones .. sort of

              Very nice curved arrays, for the smaller amount of money spent on them. Of course, there are a few reasons why the CBT36 speakers are done differently, but without the spare change to afford the more upscale drivers, this looks like it's probably a decent solution.

              Also, as Don will tell you, there are line arrays and curved arrays, but not all line arrays or curved arrays are CBT arrays -- the shading is part of the 'special sauce', and then corrective filters in the processor come along and flatten the response by reducing output in the midrange and upper bass to restore flatness (as the CBT Legendre Shading technique results in sloping treble response). If you implement both these measures (which are well documented) then you'll have a true CBT array.
              Best Regards,

              Rory Buszka
              Product Manager, Dayton Audio

              The best way to predict the future is to create it.

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              • #22
                Re: CBT36 clones .. sort of

                I already have some pretty serious EQ going on with the DCX. I am crossing my mids much higher than the real CBT36 .. but the Aura driver is more full range than the ND91. I also cross to the woofers higher since the Aura wont go as low as the ND91. I would not consider my array usable without a woofer of some sort (not a sub).

                I plan to do the shading at some point. This project has been moved to the side for now.

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