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    microhaxo is offline CarAudio.com Elite



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    Problem when calculating Sealed Box design..

    So I bought a new car and I no longer have room for ported, which is fine. I decided to calculate out the best sealed box for my sub and so i went here:

    Car Audio - Sealed Subwoofer Box Design Calculator

    and used these specs:

    AV12X-D2
    FS: 26.7Hz
    Qms: 3.67
    Vas: 69L
    Cms: .22mm/N
    Mms: 161g
    Rms: 7.32
    Xmax: 23mm
    Xmech: 32mm
    Sd: 471sqcm
    Vd p-p: 2.16L
    Qes: .36
    Re: 3.2ohm
    Le: .196mH
    Z: 4ohm
    Bl: 15.6Tm
    Pe: 1000W
    Qts: .32
    1WSPL: 87.7db
    2.83V: 91.7dB


    I also used

    AJ Sealed Designer to make sure the response was right.

    Now here is the problem.. If i use a normal Qtc of ~ 0.8 - 1.2 my box IS HUGE, anything above 1.2 Qtc and now im peaking at like 1khz.. wtf

    The flattest response requires a 67cu ft box! even at 1.2 Qtc i need 5.282 CUFT SEALED!!!

    I was looking to make ~ 1.5 cuft sealed for the sub but now it seems that that design is WAY too small for this sub.

    Someone please help me.

    Thanks.


    EDIT:

    Here is the same result with WINISD:


    Uploaded with ImageShack.us
    Last edited by microhaxo; 06-28-2011 at 12:18 PM. Reason: WINISD INFO







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