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    slaphappy's Avatar
    slaphappy is offline Junior Member



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    Finding ideal enclosure volume w/ Fs, Qts, Vas etc ??

    Ok, I thought the sub would have a recommended volume for a sealed enclosure... NOPE. I have some books but they don't help. These are the specs in the manual:
    Fs = 27Hz
    Qts = 0.30
    Vas = 3.2 Ft^2
    Qes = 0.32
    Qms = 5.0
    Sd = 490cm^2

    I don't know what any of this means. My book says:
    fob = Fs/Qts ... so Fob = 90
    Vof = Vas * Qts^2 ... so Vof = .288

    The manual then says to always make sure you make the enclosure 10% larger than required. Vof = 0.317? Woofer internal volume = .19 Ft^2
    So... 0.507 is the volume needed?

    The manual keeps using ft^2 (feet squared). Isn't it ft^3 (feet cubed)?

    HELP ME PLEASE







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    jlaine is offline Vaporware



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    Re: Finding ideal enclosure volume w/ Fs, Qts, Vas etc ??

    Originally posted by slaphappy
    Ok, I thought the sub would have a recommended volume for a sealed enclosure... NOPE. I have some books but they don't help. These are the specs in the manual:
    Fs = 27Hz
    Qts = 0.30
    Vas = 3.2 Ft^2
    Qes = 0.32
    Qms = 5.0
    Sd = 490cm^2

    I don't know what any of this means. My book says:
    fob = Fs/Qts ... so Fob = 90
    Vof = Vas * Qts^2 ... so Vof = .288

    The manual then says to always make sure you make the enclosure 10% larger than required. Vof = 0.317? Woofer internal volume = .19 Ft^2
    So... 0.507 is the volume needed?

    The manual keeps using ft^2 (feet squared). Isn't it ft^3 (feet cubed)?

    HELP ME PLEASE
    Download winisd from www.linearteam.dk, then input these parameters. It'll do the math for you, so you don't have to be concerned with the extra figures.




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    slaphappy's Avatar
    slaphappy is offline Junior Member

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    Thanks for the tip! I just downloaded winisd, plugged the numbers in, and presto.




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