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Message: <blockquote data-quote="wesl56" data-source="post: 1927015" data-attributes="member: 568915">ok well wtf... the owner's manual says "optimum ported volume: 1.3 net ft^3 with a 15 in^2 port (1.25x12)  and 22.75 inches of port"... around 34 hzhow come alpine reccomends only 15 in^2 of port if its in 1.3 cubes at 34hz... mine is only slightly larger and tuned 3hz lower...?? and thier "reccomended port" is only 1.25" wideand what's the highest port velocity in winisd you can have before there will be noise? for the box im building winisd says 3.2 ft/s...</blockquote>

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