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    Re: General Box Building Rules?

    To make boxes stronger and reduce the amount of bracing on the inside, do not just butt joint the pieces use a dado joint. This is accomplished by a router or a table saw with a dado blade.
    Attached Thumbnails Attached Thumbnails General Box Building Rules?-butt-joint.jpg   General Box Building Rules?-one-side-dado.jpg   General Box Building Rules?-two-side-dado.jpg  







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    Re: General Box Building Rules?

    To seal the inside some people use paint which is ok, I choose to use polyurethane with a Pneumatic spray gun. If carpeting box go ahead and poly the outside also before carpeting. If painting, poly after you paint to complete the sealing.
    Pre Drill holes to prevent splitting.
    Place a screw every 4-5 inches.
    Use wood glue to put box together but use liquid nails on inside seams of joints. Coat both end of pieces being glued for proper bond.
    After box is glued, liquid nailed and sprayed with poly or paint, Let sit over night or longer. Some fumes can damage speakers.
    Having a problem with poly stuffing? try using adhesive to apply it to the inside of the box to keep it from floating around, blocking the port and being blown out of the port or tangled in the speaker..




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    Re: General Box Building Rules?

    This is turning out to be a pretty nice informative thread. Keep it up.



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    Re: General Box Building Rules?

    Here is a couple of links that i have found very helpful
    http://www.jlaudio.com/tutorials/
    specifically the ports, designing subwoofer enclosures, and The myth of the magic box.

    http://www.bcae1.com

    also don't be afraid to go out and buy a book on car audio. I read "The Car Stereo Cookbook" by Mark Rumreich when I built my first box and I think it helped quite a bit.

    Almost all of the questions about port tuning can be answered by the JL audio tutorial on ports that I linked to above. It's a very well done tutorial.

    P.S. very nice thread, should be a sticky if we get some more posts




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    Re: General Box Building Rules?

    TTT , help us out




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    Re: General Box Building Rules?

    i know that this is a total moron question, but if the sub is in the trunk isn't it going to be really loud outside and not so much on the inside? so bassicaly wouldn't it be preferabel to have the sub in your car/cab, like suv style? Trunks have very little insulation, so the bas is going to be bouncing around in there so every one is going to hear your bass and your going to get a mongol ticket right? as opposed to being inside the cab?




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    Re: General Box Building Rules?





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    Re: General Box Building Rules?





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    Re: General Box Building Rules?

    wow, this post was very helpful.




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    Re: General Box Building Rules?

    This thread is a ton of help, IMO it should be made a sticky. Keep the insider tips comin!




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    Re: General Box Building Rules?

    I dont know if this one has been posted yet.
    To cut out holes for subs using a router.
    Determine the size hole you want to cut out.
    Get a piece of wood, a scrap piece of mdf works great, make sure it is wide enough so the router isnt wobbling on it.
    Drill a hole to accept the router bit (a straight bit) you will also need a set of guide bushings.
    Predrill a hole for the nail in the circle jig and nail it in the middle of where you want the hole to be, put the router in and start cutting. Make shallow cuts like a 1/4 inch or so at a time so not to burn up the bit, and to make the cutting easier.
    Measure twice, cut once.

    Tip 2. For those who like to paint their enclosures and want a cool look and a strong hold, You could try a dovetail joint. This would involve a router and a dovetail jig.




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    Re: General Box Building Rules?

    when building your box do not use nails use screws they are more secure people. Just start a little pre-hole and make sure the screw goes in all the way and the wood is flush, you wont have a problem with bracing then.




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    Re: General Box Building Rules?

    What kind of tools do you need to drill the holes,, and how exactly do you go about doing it?




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    Re: General Box Building Rules?

    What hole? The subwoofer holes? You can use a router with a Straight Slot router bit or you can use a scroll saw. Jig saws work also, but the router way is the best in my opinion followed by the scroll saw and finally the jig saw.




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    Re: General Box Building Rules?

    If you are asking about the predrilling of the screw holes, Just drill into the wood with a drill bit slightly smaller than the screw itself.




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