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Anyone use this driver Visaton BG17-8 6.5" Full-Range ...

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  • Anyone use this driver Visaton BG17-8 6.5" Full-Range ...

    I ran it through wt3, but the problem is it's suggest about a 2 ft3 area. And anything less than 10D inch port in bass box says it's to small? Crazy? I've tried two different machine with wt3. Original version installed. The specs posted suggest a .98 box size? Not sure if wt3 is giving me crazy numbers or if it's just not mean to be in a vented box.
    On the cheap diy. That is my motto - www.hifiposse.com

  • #2
    What are the specs you are getting?
    https://www.facebook.com/Mosaic-Audi...7373763888294/

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    • #3
      D 131.8 [mm]
      Re 6.92 [Ohms]
      Fs 133.90 [Hz]
      Zm 29.75 [Ohms]
      BL 4.19 [N/A]
      Qms 3.891
      Qes 1.180
      Qts 0.905
      Vas 10.360 [liters]
      L10k 0.27 [mH]
      n0 2.01 [%]
      dBSPL 95.13 [1W/1m]
      Ms 3.56 [grams]
      Cms 0.40 [mm/N]


      I entered in 5.188" As the diameter of the piston. Used added mass method in wt3
      On the cheap diy. That is my motto - www.hifiposse.com

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      • #4
        Yeah, with that Qts, it really needs a large sealed box. Ported just isn't a good fit for it.
        https://www.facebook.com/Mosaic-Audi...7373763888294/

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        • #5
          That's interesting. Normally bass box is pretty good a letting your know that vented box is not recommended? It's going to be an interesting build?
          Last edited by hobbyhands; 04-27-2017, 09:31 PM. Reason: the specs on parts express say it's .98 Qes??
          On the cheap diy. That is my motto - www.hifiposse.com

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          • #6
            W/YOUR numbers, it looks like it COULD go in 1.0cf w/a 4-1/2" dia. hole cut through the wall for a vent (so . . . the length would be 0.75").
            A 1cf closed box will have a lot more "normal" rolloff (F3 near 120Hz), but venting will REALLY lift the output between 80-200 Hz. (Maybe too much near 200Hz).
            If you're crossing to sub, which is better could depend on your sub's range.

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            • #7
              Chris- stuff that model! I mean PACK it in! Then see what you get in that vented box....

              Wolf
              "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
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              • #8
                Originally posted by Chris Roemer View Post
                W/YOUR numbers, it looks like it COULD go in 1.0cf w/a 4-1/2" dia. hole cut through the wall for a vent (so . . . the length would be 0.75").
                A 1cf closed box will have a lot more "normal" rolloff (F3 near 120Hz), but venting will REALLY lift the output between 80-200 Hz. (Maybe too much near 200Hz).
                If you're crossing to sub, which is better could depend on your sub's range.
                I must be doing something wrong. Neith WinSD or Bass Box suggest 1.0cf? they both suggest a sealed box. I'm interested how you got the 1cf? Thanks
                On the cheap diy. That is my motto - www.hifiposse.com

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                • #9
                  Both program suggestions are "optimally flat" alignments and are just that, suggestions. They may or may not be optimal for YOUR particular design.
                  https://www.facebook.com/Mosaic-Audi...7373763888294/

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                  • #10
                    Using YOUR measured T/S parms, both WinISD alpha and beta suggest a larger vented box, but a large box has more extension, but also more ripple. As you make the box smaller, the ripple smooths out. They both show that a 2cf box w/a 5"id hole cut through the cab (so, a vent w/a length of 0.75") tunes the box into the upper 70s. The F3 is around 70, and they hit Xmax at 70Hz w/only 4w of power, but THAT's 103dB w/this driver.

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