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Message: <blockquote data-quote="DNick454" data-source="post: 5878947" data-attributes="member: 600755"><p>Port area is dependent on how large your box is volume wise and how much cone area + excursion you're getting. A small port doesn't need to be very long to achieve a low tuning, but it also is restrictive to air flow and you will probably get port noise from the turbulence. A large port area breathes much better and can get louder (all within reason of course) but is required to be longer to achieve the same tune. You didn't say what size woofers you were using, but if it's two 12's, expect to have something like 50-60 sq. in of port area, then shorten or lengthen it to get the proper tuning frequency. If you're using aero ports, you can get away with less port area because they are much more efficient air flow wise.</p></blockquote><p></p>

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