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    ported box help

    Just got my 18 obsidian in....looking to build a box. Was thinkin goin sealed but gona stick with amp combo in sig so gona port it so i can get the most out my amp n sub.Gona go with the smallest rec ported box for the 18..5cf. Want to kno if my length n sizes r right. 5cf minus sub n port displacement, would a 5in diameter port with a 6.7in length give me about a 32hz tuned frequency?



    Pioneer AVH-P4400BH
    Alpine pdx 1.600
    Alpine pdx 4.100
    18in obsidian
    5cf@30hz
    4x kenwood kfc-1693ps...
    Refs: 5o4m6, assman, basschild, BIG4EVER, bonesninja, bjfish11, canyouhearmatt, Coolwazabi, cdf294, chaunb3400, DownSouth954, here to buy, squeak12, THXdts, jmanpc, JBloud47, jk32sho, johnson, Louisiana_CRX, Mike465, nismos14, pitbull12887, ProblemHouston, Fear of Theive, farmerehsan, rollerdj, valter, WaTTsLOk187




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    Re: ported box help

    more port.



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    Re: ported box help

    ...



    Pioneer AVH-P4400BH
    Alpine pdx 1.600
    Alpine pdx 4.100
    18in obsidian
    5cf@30hz
    4x kenwood kfc-1693ps...
    Refs: 5o4m6, assman, basschild, BIG4EVER, bonesninja, bjfish11, canyouhearmatt, Coolwazabi, cdf294, chaunb3400, DownSouth954, here to buy, squeak12, THXdts, jmanpc, JBloud47, jk32sho, johnson, Louisiana_CRX, Mike465, nismos14, pitbull12887, ProblemHouston, Fear of Theive, farmerehsan, rollerdj, valter, WaTTsLOk187

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    jolly_26's Avatar
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    Re: ported box help

    yes it would, but that seems like a very small port for a sub and enclosure of that size.




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    Re: ported box help

    Yea was thinkin that to but if i double the diameter the length gets crazy long...if im doin it rite. Was thinkin the sound wouldnt be on..lagin with the music., dont really kno how to say it.



    Pioneer AVH-P4400BH
    Alpine pdx 1.600
    Alpine pdx 4.100
    18in obsidian
    5cf@30hz
    4x kenwood kfc-1693ps...
    Refs: 5o4m6, assman, basschild, BIG4EVER, bonesninja, bjfish11, canyouhearmatt, Coolwazabi, cdf294, chaunb3400, DownSouth954, here to buy, squeak12, THXdts, jmanpc, JBloud47, jk32sho, johnson, Louisiana_CRX, Mike465, nismos14, pitbull12887, ProblemHouston, Fear of Theive, farmerehsan, rollerdj, valter, WaTTsLOk187

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