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<blockquote data-quote="LetMyBeatPound" data-source="post: 8594322" data-attributes="member: 673630">Ok, I got my subs and amp figured out. Now I need a box design. Im gonna build it my self... The guy from FU Audio said the 750s do best n a 4th order at 3:1 ratio.So if I make my box with 2 separate sealed chambers on the ends with a shared ported chamber in center. To get my 3:1, with 6 cf for my center chamber, do I go by half of that or total to get my cf size for the sealed chambers. In other words, do I use 2cf or my sealed cuz 6cf/2cf = 3:1 or do I split the shared chamber to 3cf and make the sealed chambers 1cf. I think the 6cf center w/ 2cf for the sealed chambers is more correct but before I go any further I wanted to find out. I know i have to take into account the area the subs take up, which is the cubic inches of the magnet size times 5 I think.I looked on here but I couldn&#039;t find that link with all the calculators for all this stuff, also if someone could point me to where I can find this info it would be awesome.Thanks a bunch in advance!</blockquote>

[QUOTE="LetMyBeatPound, post: 8594322, member: 673630"] Ok, I got my subs and amp figured out. Now I need a box design. Im gonna build it my self... The guy from FU Audio said the 750s do best n a 4th order at 3:1 ratio. So if I make my box with 2 separate sealed chambers on the ends with a shared ported chamber in center. To get my 3:1, with 6 cf for my center chamber, do I go by half of that or total to get my cf size for the sealed chambers. In other words, do I use 2cf or my sealed cuz 6cf/2cf = 3:1 or do I split the shared chamber to 3cf and make the sealed chambers 1cf. I think the 6cf center w/ 2cf for the sealed chambers is more correct but before I go any further I wanted to find out. I know i have to take into account the area the subs take up, which is the cubic inches of the magnet size times 5 I think. I looked on here but I couldn't find that link with all the calculators for all this stuff, also if someone could point me to where I can find this info it would be awesome. Thanks a bunch in advance! [/QUOTE]

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