Anyone remember W*D*H ratios for Sub Box?

Discussion in 'Archived Threads 2001-2004' started by PeterOS, Nov 18, 2002.

  1. PeterOS

    PeterOS Extra

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    I don't know how many of ye would have seen it but anyway.

    I am trying to design my own box for my tempest (kind of as part of college project), i read somewhere before of the dimension ratios that can be used that will reduce standing waves in the box. It was something like (1)W*(1.2)D*(1.5)H .If any of ye have seen it before could you please let me know of the ratios or even better the link to the site.

    Cheers

    One other question, any of ye ever use ALGORE software before. I am going to try to do a FEA (finite element analysis)of a port to see how much of a difference it does make to air flow. Just wondering how hard is it to use, starting off and learning how to use it by yourself.
     
  2. Standing waves are not an issue with sub boxes. You do not need to stick with a "golden ratio". perfect cubes work just fine for subs. ...the only time you run into issues is if you have a really tall subwoofer (pipe resonances)
     
  3. Patrick Sun

    Patrick Sun Studio Mogul

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    FYI: The ratio for minimizing standing waves (old school) is: 0.6 x 1.0 x 1.6
     
  4. PeterOS

    PeterOS Extra

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    Cheers for the speedy replies, lads
     
  5. Jonathan M

    Jonathan M Second Unit

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    ...and, if you wanna be a little more dead on with those cuts, the ratio for minimizing standing waves should be:

    (sqrt(5)-1)/2,1,(sqrt(5)+1)/2

    That's the Golden Ratio, he "first" irrational to be not well approximated by rationals (Thus minimal standing waves)

    This makes no difference at subwoofer frequencies.
     

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