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    ws140's Avatar
    ws140 is offline ~`[]D[]][\/]][[]D`~



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    Icon32 ported box question

    If I wanna build a ported box how do I figure out the port lenght and diameter? Also how can you figure the sub displacement ? Also what do you tune it to? Does it depend only on the subs or are all about the same?



    Alpine CDA-9813
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    1 ed e12O.44 in a 2ft.^3 sealed box.
    Soundstream RUB500-1 for the sub (400x1 @ 2 ohms)




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    Try looking for a program at www.download.com search for 'subwoofer'



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    there is a box building program called winsid (not sure on the name, but i can find out for you) and it is a free download. It will give you the dimensions to build the port.

    and for the displacement of the sub, look in a manual, or something, ask the company, there are many ways to find out.. but you can't really measure it (you could but it would be a pain in the @ss.)

    and tuning frequencies, the lower the freq, the better the SQ, but you will sacrifice SPL.

    for daily driven applications somewhere around 30-35 hz's should be a good enough mix for spl and SQ. anything higher than that, and you could blow your subs up when they play deep frequencies, but a subsonic filter could solve that.

    Hope i have been some kind of help

    --Greg



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