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Reload Thread: Slot ports that exit the same distance from the rear as they are wide???? HELP

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    mendon mafia's Avatar
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    Slot ports that exit the same distance from the rear as they are wide???? HELP

    Ok so im using the re calculator to get some baseline designs for my next projects and im wondering what is the deal when you make the port bend 2 length 0" in length?

    it says on the re site that you are still acting as bent using the .75" of the thickness of the wood as the port bend 2 piece.

    basically i want to know if I am the same distance from the back of the box as is equal to the port width do i get to count the bend in the port length or is it just the length of the port wall? will it still function like a bent port? should i put a 45 or a curve in the corner as like a bent port?

    How much farther from the back of the box do i need to be for it to act as a straight port and not need a 45 or curve?

    Ive designed a box like this for me friend before and it turned out great but i think it was lucky on the tuning, i cant remember how i calculated it.



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    Re: Slot ports that exit the same distance from the rear as they are wide???? HELP

    The port actually extends past the port piece like this:



    Port piece length + port width + width of wood = Total port length (22.75")



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    Re: Slot ports that exit the same distance from the rear as they are wide???? HELP

    psych0ticnemes1 to the rescue again lol good info



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    Re: Slot ports that exit the same distance from the rear as they are wide???? HELP

    I do what I can.



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    mendon mafia's Avatar
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    Re: Slot ports that exit the same distance from the rear as they are wide???? HELP

    Thanks.

    so how far from the back do i need to make it to be considered a straight port?

    also when making it like shown above would it be beneficial to add a 45 or curved section?



    refs: ebaker, its_bacon12, jando86, thedukey42 , WrenchGuy, jaredspl, teenapp, MisterGrubbs, BushJ311, fozzy2134
    System: Poineer 590ib headunit (soon upgrading to 790bt)
    2 12" RD Alpha V.3's (soon upgrading to konaki 9512 hybrids) powered by 2 Atomic 3000.1d's
    Polk mm6 front components powered by a Soundmagus CP-91 @ 4ohm bridged. JBL/Infinity Hybrid rear components. hu power
    200 amp alt and 2 stinger spv 70's (more pending voltage drop)
    Current output: 144.9 db using new 09 alpha v3's - on music with 1 3k - song: haters everywhere-two five, Chrysler 300M.

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    Re: Slot ports that exit the same distance from the rear as they are wide???? HELP

    Quote Originally Posted by mendon mafia View Post
    also when making it like shown above would it be beneficial to add a 45 or curved section?
    Either or will help air flow rather than having just a 90* corner.



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    Re: Slot ports that exit the same distance from the rear as they are wide???? HELP

    Quote Originally Posted by RyanM923 View Post
    Either or will help air flow rather than having just a 90* corner.
    ok so now for the how far away do i need to be before it becomes a straight port, surely 6.5 inch for a 6" wide port wont be enough, how much is?



    refs: ebaker, its_bacon12, jando86, thedukey42 , WrenchGuy, jaredspl, teenapp, MisterGrubbs, BushJ311, fozzy2134
    System: Poineer 590ib headunit (soon upgrading to 790bt)
    2 12" RD Alpha V.3's (soon upgrading to konaki 9512 hybrids) powered by 2 Atomic 3000.1d's
    Polk mm6 front components powered by a Soundmagus CP-91 @ 4ohm bridged. JBL/Infinity Hybrid rear components. hu power
    200 amp alt and 2 stinger spv 70's (more pending voltage drop)
    Current output: 144.9 db using new 09 alpha v3's - on music with 1 3k - song: haters everywhere-two five, Chrysler 300M.

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    Re: Slot ports that exit the same distance from the rear as they are wide???? HELP

    Quote Originally Posted by mendon mafia View Post
    ok so now for the how far away do i need to be before it becomes a straight port, surely 6.5 inch for a 6" wide port wont be enough, how much is?
    I couldn't tell you how much further it has to be, or what % more than the width of the port it has to be...I just tend to either keep it a safe distance from the corner, or use the corner.



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