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Message: <blockquote data-quote="ra4u2nv" data-source="post: 1005409" data-attributes="member: 542694">Hey guys Need your help!!  I am learning how to use Winisd and trying to build my first fiberglass box at the same time.My box has a volume of 6.5 gallons of water which converts to .87 cu ft.I want a round ported box.  I am entering all the info in winisd program.the sub has a dispalcement of .005 cuft  and according to the program I can use a 2" port x 6" long with a port area of 26.56 cuIn.  I subtract all that from .87cuft and I get .804 cu ft.  The program indicates that the port should not give me port noise b/c of the vent mach figure.  It also indicates that the enclosure will be tuned to 37hz.  Now my question is if all this calculation is right?????  can someone help me?</blockquote>

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