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Message: <blockquote data-quote="crossfire2k5" data-source="post: 1384389" data-attributes="member: 565431"><p>SO, If you have a small box say 1.5cu. ft. , you would require more port area that of a box that was 3 cu. ft to attain the desired tune?? Hence smaller box= longer ports, big box=short ports right? How do I know how many ports I need? Is number of ports related to the amount of woofer excursion? I am geting an orion h2 12" I calculated that if the box was 2.87 cu ft. and I had 2 4" round ports, tuned to 33 hz they would each port need to be 18.75" long. Does that sound correct, Or do I need another port? Is port area the length of a port or the diameter?//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif</p></blockquote><p></p>

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