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Review my 4th order build
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<blockquote data-quote="Jeffdachef" data-source="post: 8499952" data-attributes="member: 650438"><p>each subwoofer will have different resonant frequencies in sealed boxes depending on the size of the sealed box. for 4th orders you need to adjust the sealed portion so that your resonance lies somewhere within 45hz to 50hz then you test your cabin gain and vehicle transfer function with an spl meter and then tune the port to that peak for max performance.</p></blockquote><p></p>
[QUOTE="Jeffdachef, post: 8499952, member: 650438"] each subwoofer will have different resonant frequencies in sealed boxes depending on the size of the sealed box. for 4th orders you need to adjust the sealed portion so that your resonance lies somewhere within 45hz to 50hz then you test your cabin gain and vehicle transfer function with an spl meter and then tune the port to that peak for max performance. [/QUOTE]
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Review my 4th order build
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