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    mk_'s Avatar
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    Need help designing enclosure for 18" BTL

    Hey guys,

    My next build is with a FI BTL 18" fully loaded.

    These are the dimensions I would like:

    HEIGHT: 22 inches
    WIDTH: 37 inches
    DEPTH: 21 inches

    I was throwing around the idea of having a slot port on the top of the enclosure like this sad drawing portrays:




    Tuning I want to be around 35hz. Any box calculators I can use to determine the cuts for a box like this?


    Or any other suggestions are welcome too.

    Thanks,
    Michael



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    Re: Need help designing enclosure for 18" BTL

    What type of vehicle?
    SUV?



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    Re: Need help designing enclosure for 18" BTL

    It will be going in a Dodge Stealth.


    These dimensions will fit, just not sure how to calculate the box with the port on top.



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    Re: Need help designing enclosure for 18" BTL

    pen and paper



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    Re: Need help designing enclosure for 18" BTL

    Suggestions for the width of port? Going for SQL if theres such a thing.



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    Re: Need help designing enclosure for 18" BTL

    up



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    Re: Need help designing enclosure for 18" BTL

    why not just do a port on one side, or a port on each side?



    2,500+ designs since March 2011

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    Re: Need help designing enclosure for 18" BTL

    Well, I currently have a slot port vertical behind the drivers seat. I was looking for something different, hence the top horizontal slot port idea. Crunching numbers it looks like I might not be able to fit it. I have 22" height to work with, 18" approx goes to the speaker alone, another 1.5" for thickness of mdf, leaving me with a small port width...

    So I don't think that is going to work.


    Port on both sides does sound pretty intriguing however..... not sure where to even start with it though..


    Open to ideas!!!


    Michael



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    Traded with: manosteel916, peas247
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    Re: Need help designing enclosure for 18" BTL

    ^^^The way you want to do it with the port above the sub won't work...it's just too skinny of a port. I've been designing a few boxes with the two ports, one on each side, for one sub. You're got a little over 8.2ft^3 to work with, which is plenty since you'll probably end up with right around 6ft^3 after all displacement.



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    Re: Need help designing enclosure for 18" BTL

    ygpm in a minute



    www.BassHeadsENT.net for all your custom enclosure needs
    Offering build service and expertise in the Tampa area as well as enclosures shipped nationwide!
    [email protected]


    Check this thread for all the build logs being posted.
    http://www.caraudio.com/forums/suppo...ks-thread.html

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