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building sub box for my house?
ok so i have surround sound system in my room that's pretty good as it it but i knocked over a speaker and cracked my sub box that was a 3 way tower speaker the i put better a better speaker in. but im making my new box and was wondering two things 1 is plywood ok to make it out of and 2 i know your supposed to seal the corners but what if i spray the inside with sealant that is normally used to waterproofing campers
2 Answers
- XTXLv 78 years agoFavorite Answer
=== plywood that is 3/4 or 1inch thick is the best or you can use 1inch particle board and Elmers Woodworkers glue and drill pilot holes for the drywall screws == using drywall screws is better than nails because they do not back off with the sub vibrations and they do not rust ... glue and screw and forget the mobile home or camper sealer that does not work == then for a cover you can go to the fabric store and get some vinyl Naugahyde or a choice of your own ...
- ?Lv 68 years ago
The best affordable material for a sub box is 3/4 inch MDF. It resonates way less than plywood. An easy test of a material is to knock on it. The louder your knock sounds the worse the material will be.
For construction the most important part is vibration dampening so make sure to glue the heck out of the box. For MDF especially you'll need to drill pilot holes for the screws. Use long screws and space them pretty close together. Wood glue is probably fine for construction but could crack long term. you can run beads of construction adhesive along the insides of the corners to strengthen them, then just smudge the beads down with a gloved finger or a folded pad of paper towel.
You didn't mention anything about chamber size and I don't want to assume its because you already figured it out. There's a lot of math involved in figuring out the proper size of a speaker box as well as whether it should be vented or not. Generally the speaker manufacturer has guidlines for box size in cubic feet or inches. Make sure to follow that or you'll probably not be happy with the result. Some speaker designs also call for a loose batting material inside to dampen unwanted vibrations and resonances.
Last point, I promise: Most speaker boxes are cubes or rectangles out of convenience and ease of manufacturing. Its actually better if the back isn't parallel to the front and the sides aren't parallel to each other. It makes construction more difficult but makes a better speaker. (thats pretty nitpicky though but since you're building something anyway you might consider it)