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<blockquote data-quote="Moocow16" data-source="post: 71512" data-attributes="member: 544616"><p>I found this on MTX&#039;s website, and it seems to work pretty well.&nbsp; Find out the optimum volume that the box should be in cubic feet.&nbsp; Multipy that number by 1728, and you get the cubic inches.&nbsp; Find the cubed root (not squared root) of that number, and you get the first dimension (which should be the height).&nbsp; Take the first dimension and divide it by 1.62 and you get the second dimension (which should be the depth).&nbsp; Take the first dimension again, and multiply it by 1.62 and you get the third dimension (which should be the length).&nbsp; Now, these are the dimensions for the set volume, and doesn&#039;t include the thickness of whatever your using to make the box.&nbsp; For example (and this is to make a rectangular box) if you want a box for a single 12&quot; that needs 1.5 cubic feet of space, you take 1.5 cubic feet, multiply it by 1728 and you get 2592 cubic inches.&nbsp; The cubed root of 2592 cubic inches is 13.74 inches, and that is the height.&nbsp; Take 13.74 and divide it by 1.62 and you get 8.48 inches, and that is the depth.&nbsp; Take 13.74 once again, and multiply it by 1.62 and you get 22.26 inches, and that is the length.&nbsp; This formula works better with 2 or 3 subs, because these dimensions would make a strange looking box (at least i think), but these dimensions work.&nbsp; Now, assuming you&#039;re using 3/4 inch MDF, you would add 1.5 to each of these dimensions and you get the total length of the pieces of MDF you need.&nbsp; So the new totals are 15.24(height), 9.98(depth), and 23.76(length).&nbsp; And i have no idea how to properly port a box, sorry.&nbsp; I hope this helps you, or anybody else that reads this.</p></blockquote><p></p>

[QUOTE="Moocow16, post: 71512, member: 544616"] I found this on MTX's website, and it seems to work pretty well. Find out the optimum volume that the box should be in cubic feet. Multipy that number by 1728, and you get the cubic inches. Find the cubed root (not squared root) of that number, and you get the first dimension (which should be the height). Take the first dimension and divide it by 1.62 and you get the second dimension (which should be the depth). Take the first dimension again, and multiply it by 1.62 and you get the third dimension (which should be the length). Now, these are the dimensions for the set volume, and doesn't include the thickness of whatever your using to make the box. For example (and this is to make a rectangular box) if you want a box for a single 12" that needs 1.5 cubic feet of space, you take 1.5 cubic feet, multiply it by 1728 and you get 2592 cubic inches. The cubed root of 2592 cubic inches is 13.74 inches, and that is the height. Take 13.74 and divide it by 1.62 and you get 8.48 inches, and that is the depth. Take 13.74 once again, and multiply it by 1.62 and you get 22.26 inches, and that is the length. This formula works better with 2 or 3 subs, because these dimensions would make a strange looking box (at least i think), but these dimensions work. Now, assuming you're using 3/4 inch MDF, you would add 1.5 to each of these dimensions and you get the total length of the pieces of MDF you need. So the new totals are 15.24(height), 9.98(depth), and 23.76(length). And i have no idea how to properly port a box, sorry. I hope this helps you, or anybody else that reads this. [/QUOTE]

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