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Message: <blockquote data-quote="Demi" data-source="post: 2503436" data-attributes="member: 568585"><p>Alright im looking at building a new box for my type x's. I have one in a 2.4 cube @ 32hz box, but it provides to high a SPL peak and to steep a slope for response curve, so i decided to go with alpines specs. The specs are for a single sub but i want a single chamber dual sub box. The recommended vent area for a single sub is 19.5"^2, with a length of 27 inches. To add another sub do i keep the length the same and double the port area?</p></blockquote><p></p>

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