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    orphe's Avatar
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    Icon32 help figuring out tuning frequency

    I built a box about a week ago but I dont know if I calculated the tuning freqency right.
    Box details

    I have the port fireing up.

    total driver displacement is about .174 cu ft

    the external dimentions
    40 *18 *16 = 6.67 cu ft

    internal dimentions
    38.5 * 16.5 * 14.5 = 5.33 cu ft

    port area 3.5 * 16.5 * 13

    Any ideia wht this is tuned to?







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    Re: help figuring out tuning frequency

    http://www.carstereo.com/help2/Articles.cfm?id=31

    that should help i dont really know though




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    Re: help figuring out tuning frequency

    if the internal deminsions u gave are including the port... its about 43 hz.. if they are not including the port... about 41 hz





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    Re: help figuring out tuning frequency

    you don't want the port ending that close to the back wall.

    but that tuning is right around what jeepintn posted.




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    Re: help figuring out tuning frequency

    Quote Originally Posted by xluben View Post
    you don't want the port ending that close to the back wall.
    true....it should be no closer to the back wall then it is wide.



    2006 Jeep Liberty
    Adire Audio, Cadence, Clarion, MB Quart

    Lv = [(14630000 x R^2) / (Fb^2 x Vb)] - 1.463R
    *Vb = vol. in cu"
    **R = sq.rt. A / Pi (for square/slot port)

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    Re: help figuring out tuning frequency

    Is there any way I could change the tuning to 30-35 HZ?




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    Re: help figuring out tuning frequency

    90 degree turn in the port!

    this looks about right:

    http://www.subwoofertools.com/forum/...&Vas=&Fs=&CE=0




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