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Message: <blockquote data-quote="goose5741" data-source="post: 1500945" data-attributes="member: 566244">When you put the board that divides the port from the sub chamber on, to put screws in you would have to tip it over...Instead of making a new topic i'll try to get my questions answered here.  How do i figure out the tuning??? I.E. I need a 2.75 cu ft ported box (with driver displacement accounted for, but not with port accounted for),  I want it tuned to 33 hz, how do i calculate port dimensions, is there a site with calculators for this or a formula i can use???? thx</blockquote>

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