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Car Audio Discussion
General Car Audio
Geting Proper Port Area
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<blockquote data-quote="poolman966554" data-source="post: 8407205" data-attributes="member: 665165"><p>very interesting.</p><p></p><p>I just ran 2 sa-12 numbers on the calc psych0ticnemes1 provided, and it says the Sa's need 68.7" minimum port area.</p><p></p><p>The box plan suggested from sundown for 2 12's is only 55.25" (the box also is 3.5cu ft @33hz)</p><p></p><p>secondly, when sundown says Xmax is 19mm @70 % BL (motor force), is that 70% force at 600w? if so, would you adjust the xmax to compensate if your running 1000w per sub?</p></blockquote><p></p>
[QUOTE="poolman966554, post: 8407205, member: 665165"] very interesting. I just ran 2 sa-12 numbers on the calc psych0ticnemes1 provided, and it says the Sa's need 68.7" minimum port area. The box plan suggested from sundown for 2 12's is only 55.25" (the box also is 3.5cu ft @33hz) secondly, when sundown says Xmax is 19mm @70 % BL (motor force), is that 70% force at 600w? if so, would you adjust the xmax to compensate if your running 1000w per sub? [/QUOTE]
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