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Message: <blockquote data-quote="qtipextra" data-source="post: 3045211" data-attributes="member: 555270">When you have a ported box, unless the box is custom made to have a flat response, you will not have a flat response in a ported enclosure. Tuning lower would just take away more highs, as ported enclosures have a very rapid loss or response starting at about 10 - 15 hz above tuning frequency. It's hard to design a ported enclosure that will offer a flat response over the entire sub stage (20 - 80 zh)Sealed, on the other hand, more easily will provide a flatter response. Less effiecency of power use from the sub tho, resulting in less output.For SQ on low notes, tune low (28-30hz max). For a flat response, the easiest and cheapest solution is a sealed box.But, you can have a ported box play more effiecently through most of the sub range if designed with a flat response in mind.</blockquote>

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