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Message: <blockquote data-quote="TrlcKed_OuT" data-source="post: 968466" data-attributes="member: 559273"><p>well im not askin help on what length i need to have a certain freq.. if u werent tryin to figure something i already know and read my posts it would help.... i know that givin my box...which is 4.5cuft or whatever  that with a port of 5''x15'' that to get a tuning of 35 i need a 25'' or so length those arent exact but i know how to get the tuing im just simplily asking givin a made box sittin in front of me how would i measure its port length.....what 2 points would i meaure from...refer to my drawing would i measure the red the blue or the green</p></blockquote><p></p>

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