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Message: <blockquote data-quote="DonH" data-source="post: 5895214" data-attributes="member: 594322">alright good sire so with that box with a width of 48 and everything else in your op you get 2.35ft^3. now i would go with a 4" port. with a 4" UNFLARED port the length will need to be 14 3/16 long to achieve a 29hz tuning. if you want a 3" port then it only need to bee 7 7/16 long for a 29hz tuning.obviously the 4" port will have much more port area hence why i would go with that one. oh yeah to figure the displacement of both port its Pi x r x length /1728im to lazy haha but the box would be ~ 2 ft^3 after sub and 4" port displacement.</blockquote>

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