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Enclosure Design & Construction
4th order with 2515s
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<blockquote data-quote="Jroo" data-source="post: 8345210" data-attributes="member: 574112"><p>The thing with 4th order is trial and error. I would have it modeled and they start playing with it. You gain low end on a 4th by the sealed side. you said the orginial box was a 1:1 ratio which I have seen. I think I even have a design I got years ago that was very close to 1:1. Most of the designs I see like that are usually for someone trying to achieve a flat response, more SQ. The design I had by memory was something like 3 to 5 db louder than the same woofer in a sealed box. Its also been years but I thought the 2500 series was the DD subs that liked 4th so you should be ok there. I know other DD models were not 4th order friendly but other may chime in if I am incorrect.</p></blockquote><p></p>
[QUOTE="Jroo, post: 8345210, member: 574112"] The thing with 4th order is trial and error. I would have it modeled and they start playing with it. You gain low end on a 4th by the sealed side. you said the orginial box was a 1:1 ratio which I have seen. I think I even have a design I got years ago that was very close to 1:1. Most of the designs I see like that are usually for someone trying to achieve a flat response, more SQ. The design I had by memory was something like 3 to 5 db louder than the same woofer in a sealed box. Its also been years but I thought the 2500 series was the DD subs that liked 4th so you should be ok there. I know other DD models were not 4th order friendly but other may chime in if I am incorrect. [/QUOTE]
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4th order with 2515s
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