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Message: <blockquote data-quote="cpcg32" data-source="post: 1895360" data-attributes="member: 561171"><p>I am using WinISD to design a ported box.  I want two ports, one on each side of the box so it's symetrical.  My dimensions of the port are going to be 13.5"(.343m)x4"(.102m).  When I tell it I want 2 vents, it says the length needs to be 18.197ft.  That is abusurdley wrong.  If I say one port, it tells me 8.831ft.  That seems a little more reasonable but still kinda long.  It is going to be a 1.88ft^3 box tuned to 26hz.  Can anyone help figure out what the length of each port needs to be?  Should I raise the tuning frequency?</p></blockquote><p></p>

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