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    How do you pick port area?

    I've looked around, and found all kinds of equations and calculators for determining the length of a port based on box volume, tuning frequency, and port cross-sectional area...

    How do you know how much cross-sectional area you need? Or do you just make it as big as you can fit?

    This will be for an SQ oriented daily driver







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    Re: How do you pick port area?

    BBP

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    Re: How do you pick port area?

    ?? Que ??

    What you talkin about, willis?




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    Re: How do you pick port area?

    power?driver?



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    Re: How do you pick port area?

    Its for an RE8, at 200W RMS. I kinda wanted to know how i would go about figuring it out for any sub tho too




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    Re: How do you pick port area?

    i was always told same area as the driver.



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    Re: How do you pick port area?

    wow, that sounds pretty big for a .5 cube box




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    Re: How do you pick port area?

    i think the re8 is .5sealed and 1ft ported. correct me if i'm wrong.



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    Re: How do you pick port area?

    .21 sealed .5 ported at 32hz from their site

    After fiddling with WinISD I came up with .5-.6 ported at 28hz for some good low end

    I think the RE10 is .5 sealed 1.0 ported....




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    Re: How do you pick port area?

    Quote Originally Posted by jellyfish420
    i was always told same area as the driver.
    That cannot be right. If that were the case, the proper port area for a 15in driver would be 175 sqin. Way way too big.

    Check with the driver manufacturer for their recommended port area.




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    Re: How do you pick port area?

    ^^^I think that only applies for SPL only installs?




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    Re: How do you pick port area?

    spl guys say use at least the sd on a driver... for a 15xxx thats like 125 in^2 seems a little much for a non comp box.

    use a modling program and check the vent velocity at your power



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    Re: How do you pick port area?

    i thought that the air velocity in the vent should not exceed 10% , of the velocity of sound in air, thats why u go for more cross sectional area, to avoid whistling.
    didnt knew it got SPL issues





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    Re: How do you pick port area?

    Quote Originally Posted by Jmac
    WIth SPL, enclosure design plays a huge role (not just volume/port area/tuning)
    like what???



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    Re: How do you pick port area?

    i thought it needed an 8:1 ratio...

    so what if you dont have BBP or winISD... where can i get one of these.. id really like to use them.



    /offtopic
    nice warning label jellyman =D




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