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    Wragold's Avatar
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    Box design for Fi BTL

    Whats the best design for a 15'' FI BTL? How many cubes at what frequancy? Would it need bracing?



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    Re: Box design for Fi BTL

    go with Fi's high recommendations 5 cu/ft @ ~33Hz.. you will be happy and yes bracing always helps if you have the space.



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    Re: Box design for Fi BTL

    ok another question. I see guys put two layers of ply on there boxes would it be needed.




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    Re: Box design for Fi BTL

    It isn't needed per say. It won't hurt either. If you properly brace the box you shouldn't need to do double thickness everywhere. However I would recommend you use a double baffle and some threaded rod.






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    Re: Box design for Fi BTL

    Brace the box, and do a double baffle for sure.

    Remember, if doing a slot port, the port itself is bracing. But you will still want more.



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    Re: Box design for Fi BTL

    Ok, i'll do double baffle and brace it. Yeah I was planing on doing a sloted port. Whats threaded rod? Is it just a dowl rod? What kind of wood is best and what thickness?




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    Re: Box design for Fi BTL

    Quote Originally Posted by Wragold View Post
    Ok, i'll do double baffle and brace it. Yeah I was planing on doing a sloted port. Whats threaded rod? Is it just a dowl rod? What kind of wood is best and what thickness?
    Threaded rod is stainless steel rod with threads along the entire length, like a long screw. Wooden dowels would work fine though, if used properly.

    MDF is the wood you will want, and 3/4" will be great. If you want to go the extra mile, Birch is much lighter and stronger than MDF but will cost a pretty penny...

    Search and read the stickies in this section, it will help a lot when getting started.

    Good luck.




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    Re: Box design for Fi BTL

    Quote Originally Posted by PhatTonyDeMarco View Post
    Threaded rod is stainless steel rod with threads along the entire length, like a long screw. Wooden dowels would work fine though, if used properly.

    MDF is the wood you will want, and 3/4" will be great. If you want to go the extra mile, Birch is much lighter and stronger than MDF but will cost a pretty penny...

    Search and read the stickies in this section, it will help a lot when getting started.

    Good luck.
    This will be my first system. I hate doing things Half A$$ed so I want to go all out, I might get the birch. I dont have enough room for the 18'' /cry. Well thank you I think thats all the questions for now.




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    Re: Box design for Fi BTL

    Quote Originally Posted by PhatTonyDeMarco View Post
    Threaded rod is stainless steel rod with threads along the entire length, like a long screw. Wooden dowels would work fine though, if used properly.

    MDF is the wood you will want, and 3/4" will be great. If you want to go the extra mile, Birch is much lighter and stronger than MDF but will cost a pretty penny...

    Search and read the stickies in this section, it will help a lot when getting started.

    Good luck.
    Negative.

    It's like $10 more for a sheet.

    I will never use MDF again after using Birch.



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