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Reload Thread: port with fiberglass? *pics*

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    port with fiberglass? *pics*

    i'm about to fiberglass my hatch, and just by guestimating, it looks as if i have about 1.25cuft of space. i was thinking of trying to port it for my 10" re se, but would this be a good idea? i have it sealed at about .80cuft right now, but i'd like to try it ported and see how it sounds. i have no experience with ports, and am not sure how to do it, but heres a few pics





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    Re: port with fiberglass? *pics*

    precision ports ftw




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    Re: port with fiberglass? *pics*

    what you need to design your port is a program that takes gross enclsoure volume and calculates a port for it.




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    Re: port with fiberglass? *pics*

    If it was me I would build the box first, and then fill it up with packing peanuts to calculate the volume of the enclosure. From there you could port it using a precision port, they have em at partsexpress.com



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    Re: port with fiberglass? *pics*

    Quote Originally Posted by MikeyB
    If it was me I would build the box first, and then fill it up with packing peanuts to calculate the volume of the enclosure. From there you could port it using a precision port, they have em at partsexpress.com
    X2 not to mention it looks like more than 1.25 from the pic. 4" precision post FTW.




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    Re: port with fiberglass? *pics*

    i've read alot on slot ports, but not so much on ports like this. would my best option be to buy 2 precision ports and use this calculator to split the length into 2 seperate ports?



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    Re: port with fiberglass? *pics*

    if you calcualte with that calculator just type in 2 ports, and the length you get out is the length of EACH port. And yes, those are the ports to use.




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    Re: port with fiberglass? *pics*

    what would be the best to tune it to, re's website recommends 32hz.



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    Re: port with fiberglass? *pics*

    id say that sounds like a pretty good place. Good luck with the build.




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    Re: port with fiberglass? *pics*

    thanks alot i'll post pics when i'm finished



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    Re: port with fiberglass? *pics*

    please do....



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    Re: port with fiberglass? *pics*

    again, the hardest part is finding the correct volume of the box, make sure you have a way to do that, like noted, packing peanuts work well, or anything that is like it... sand and water are the best for accuracy, but they can get messy.





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    Re: port with fiberglass? *pics*

    i'd use sand to measure volume. works the best with FG enclosure. if you don't have the $$ or extra sand, use water. just make sure any wood has a GOOD, solid layer of resin over it.

    or you can use packing peanuts :-)



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    Re: port with fiberglass? *pics*

    Quote Originally Posted by .::DuD3::.
    i've read alot on slot ports, but not so much on ports like this. would my best option be to buy 2 precision ports and use this calculator to split the length into 2 seperate ports?
    If you think you only have 1.25 cuft then you are going to have big trouble using 2 precision ports to get 32hz. I think a 10" would be fine with 1. I used only 1 on my 12" Brahma and it's fine. 2 would of course be optimal and I do get a little noise at 20hz test tone, but on music it is fine.




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    Re: port with fiberglass? *pics*

    Quote Originally Posted by IamDeMan
    If you think you only have 1.25 cuft then you are going to have big trouble using 2 precision ports to get 32hz. I think a 10" would be fine with 1. I used only 1 on my 12" Brahma and it's fine. 2 would of course be optimal and I do get a little noise at 20hz test tone, but on music it is fine.
    yeah after playing around with the calculator, if i did it correctly, i found that a 3" port tuned at 32hz would have a lenght of about 13.5" which would fit perfectly.



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