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<blockquote data-quote="brandinooooo" data-source="post: 7408084" data-attributes="member: 628096">I&#039;m trying to design a box for a Obsidian Audio 15. I would like to do a bandpass box instead of a normal ported box. I&#039;ve been trying to find info on the difference and usefulness of the two. The most info I&#039;ve found is here:<a href="http:////forums/enclosure-design-construction-help/510330-bandpass-explained.html" target="_blank">Bandpass..... explained.</a>How do I know which one (4th or 6th) would be better suited for my sub?In the link above, it says to use this equation to figure out which order to use:Fs/Qes = EBPIt says EBP under 70 - 4th order, and EBP above 70 - 6th order. Is this a reliable method? Or is there some other way?&nbsp; &nbsp; (OA 15 came out to 50.xx)I&#039;ve been running numbers through WINISD and this is what I&#039;ve got so far:<img src="http://i7.photobucket.com/albums/y253/scwolves10/4thvs6th.png" alt="" class="fr-fic fr-dii fr-draggable " style="" />full size <a href="http://s7.photobucket.com/albums/y253/scwolves10/?action=view&amp;amp;current=4thvs6th.png" target="_blank">4thvs6th.png picture by scwolves10 - Photobucket</a>Also, how musical are these boxes? Is there a certain ratio for the chambers and tuning?Any help is appreciated.PS. Would be going in a Tahoe.</blockquote>

[QUOTE="brandinooooo, post: 7408084, member: 628096"] I'm trying to design a box for a Obsidian Audio 15. I would like to do a bandpass box instead of a normal ported box. I've been trying to find info on the difference and usefulness of the two. The most info I've found is here: [URL="http:////forums/enclosure-design-construction-help/510330-bandpass-explained.html"]Bandpass..... explained.[/URL] How do I know which one (4th or 6th) would be better suited for my sub? In the link above, it says to use this equation to figure out which order to use: Fs/Qes = EBP It says EBP under 70 - 4th order, and EBP above 70 - 6th order. Is this a reliable method? Or is there some other way? (OA 15 came out to 50.xx) I've been running numbers through WINISD and this is what I've got so far: [IMG]http://i7.photobucket.com/albums/y253/scwolves10/4thvs6th.png[/IMG] full size [URL="http://s7.photobucket.com/albums/y253/scwolves10/?action=view&current=4thvs6th.png"]4thvs6th.png picture by scwolves10 - Photobucket[/URL] Also, how musical are these boxes? Is there a certain ratio for the chambers and tuning? Any help is appreciated. PS. Would be going in a Tahoe. [/QUOTE]

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