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Enclosure Design & Construction
port length question
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<blockquote data-quote="Jester1318" data-source="post: 1680673" data-attributes="member: 563550"><p>For those of you familiar with bass box pro and/or winisd, help me out here.</p><p></p><p>The box is 2 cuft tuned to 30hz (12" rlp), 4" precision port</p><p></p><p>When I do this calculation (Lv=((8466.4*r^2)/(Vb*Fb^2))-(1.463*r) I get a number like 15.89". Winisd gives 16.28" with end correction being .614 (is that right for 2 flared ends?) And Bass box Pro gives a length of 17.35".</p><p></p><p>Which of these is correct? Or is there some other part if it I am missing? It seems as though they should all be the same length if my numbers are identical, but they obviously are not.</p><p></p><p>Also, a precision port ordered from PE is 17" in length with adding the flares and not cutting anything, correct?</p><p></p><p>Thanks</p></blockquote><p></p>
[QUOTE="Jester1318, post: 1680673, member: 563550"] For those of you familiar with bass box pro and/or winisd, help me out here. The box is 2 cuft tuned to 30hz (12" rlp), 4" precision port When I do this calculation (Lv=((8466.4*r^2)/(Vb*Fb^2))-(1.463*r) I get a number like 15.89". Winisd gives 16.28" with end correction being .614 (is that right for 2 flared ends?) And Bass box Pro gives a length of 17.35". Which of these is correct? Or is there some other part if it I am missing? It seems as though they should all be the same length if my numbers are identical, but they obviously are not. Also, a precision port ordered from PE is 17" in length with adding the flares and not cutting anything, correct? Thanks [/QUOTE]
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port length question
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