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Message: <blockquote data-quote="deeweld99" data-source="post: 5400017" data-attributes="member: 605573"><p>I have used several online calculators to try and figure out how to do this.  I have one audiobahn 1208t and for a round port in a 2.5 cubic feet box you need a 4" diameter port 8.5" long.  I asked the audiobahn guys what the port area would be if I wanted to use a slot port and they said 25.5" area 8.5" long.  I can't figure out how they got 25.5" opening.  And I would go with that but I want to know how they got that so I can go with the smaller 1.5 cubic feet design which uses a 3" by 7.75" long port but I don't know how to correctly calculate it for a slot port.  I read the enclosure design thread but I can't get my port to come out the way audiobahn says it should be. And audiobahn went out of business so I can't ask them.</p></blockquote><p></p>

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