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Message: <blockquote data-quote="iamamp3pimp" data-source="post: 2387254" data-attributes="member: 550386">ill add to this.when he said it will raise the tuning slightly, he doesnt mean by a couple HZ.  lets take a 3 cubic foot box @ 33 hz with 50.27 square inches of port.for example, that is braced with 1 1/2 inch dowels.  3 of them from top to bottom, and 2 from side to side.  top to bottom internal is 15 inches (for the sake of arguement) and from side to side is 29 inches.  all you hjave to do is add the total length, which is this case is 103 inches, and will equal out to 182.31 cubic inches.  that takes the volume down to 2.90 cubes and with the same port length, the tuning will be raised by .56 HZ.Hardly noticable imo-Robin.</blockquote>

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