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  1. #1
    jeepintn's Avatar
    jeepintn is offline Veteran

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    ok.. so i have used two different calculators.. and they give me different port tuning answers...

    the one built into bassbox pro 6 gives me one thing... and the calculator on, the port area then port length calculators, give me different ones. which one should i go with?

    anyone around nashville who needs an install done pm me

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  2. #2
    Trixter's Avatar
    Trixter is offline Keepin it Simple

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    Kenosha, WI
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    Re: port

    pencil and paper, my friend, leaves no questions.

    Lv = (14630000 x R^2) / (Fb^2 x Vb) - 1.463 x R

    Lv = length of vent
    Fb = freq. of box
    Vb = volume of box (in cu inches)
    R = radius of port

    (if using a slot or square port, then R = sq.rt. (port area / 3.14)

    when doing this formula you need to do it twice. first do it to get the port length. now figure the port's displacement including all materials of construction. subtract this number from the original Vb and re-calculate.

    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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