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need help building a subwoofer box for my subs
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<blockquote data-quote="Doxquzme" data-source="post: 8866897" data-attributes="member: 689267"><p>That 2nd 13.26 cu ft is workable. That accounts for .25 cubic feet per sub for each their displacement. as well .26 for bracing and port area. You mentioned you are going to put the port outside the box, how so? It can be done and if you are going to do this, then it does not count against the internal volume displacement. A box with that kind of power and subs, will need substantial bracing, regardless of what you build it out of. Here are some bracing ideas to incorporate into your design.</p><p></p><p>[URL unfurl="true"]https://www.stevemeadedesigns.com/board/topic/206664-implementing-bracing/[/URL]</p><p></p><p>Remember the total area that the braces can use up is .25 cu ft in that 13.26 cu ft box (provided each woofer only accounts for .25 ea.) . It's important you find out from the manufacturer what each subs displacement will be too. If the port is out of the equation, with a 13.26 box, you only have 1.26 cu ft to deduct begore it starts to impact the overall volume needed for an optimal box size ( again, if the displacement is .25 per woofer). Technically if you're off by 10%, you should be okay, 12 cu ft being optimal after all is said and done. Additionally, adding double or triple baffles will increase the outside dimensions relative to the number of baffles added.</p><p></p><p>Isobaric is a little more tricky to build but will save you 50% in over all volume needed. Here are examples of isoberric configurations.</p><p></p><p>[ATTACH=full]55549[/ATTACH]</p><p>Cone to cone or magnet to magnet are out of phase, cone to magnet (center) is in phase. Ultimately, you want to insure that the finished product has both cones moving in the same direction These are pretty simple to build but as anything, there are compromises such as the box has to have breakdown capability if you want to be able to remove the isolated subs in both the non- face to face designs. That one face to face design can just have a a 1-2" spacer between the baffle mounted sub and the top mounted sub..</p><p>Here an example of a 6 order bandpass compound loaded enclosure.</p><p></p><p>[MEDIA=youtube]euniH1bvJZw[/MEDIA]</p><p></p><p>If you are new to building enclosures, these are most likely beyond what you're going want to try, they are not easy to do correctly.</p></blockquote><p></p>
[QUOTE="Doxquzme, post: 8866897, member: 689267"] That 2nd 13.26 cu ft is workable. That accounts for .25 cubic feet per sub for each their displacement. as well .26 for bracing and port area. You mentioned you are going to put the port outside the box, how so? It can be done and if you are going to do this, then it does not count against the internal volume displacement. A box with that kind of power and subs, will need substantial bracing, regardless of what you build it out of. Here are some bracing ideas to incorporate into your design. [URL unfurl="true"]https://www.stevemeadedesigns.com/board/topic/206664-implementing-bracing/[/URL] Remember the total area that the braces can use up is .25 cu ft in that 13.26 cu ft box (provided each woofer only accounts for .25 ea.) . It's important you find out from the manufacturer what each subs displacement will be too. If the port is out of the equation, with a 13.26 box, you only have 1.26 cu ft to deduct begore it starts to impact the overall volume needed for an optimal box size ( again, if the displacement is .25 per woofer). Technically if you're off by 10%, you should be okay, 12 cu ft being optimal after all is said and done. Additionally, adding double or triple baffles will increase the outside dimensions relative to the number of baffles added. Isobaric is a little more tricky to build but will save you 50% in over all volume needed. Here are examples of isoberric configurations. [ATTACH type="full" alt="1703706043951.png"]55549[/ATTACH] Cone to cone or magnet to magnet are out of phase, cone to magnet (center) is in phase. Ultimately, you want to insure that the finished product has both cones moving in the same direction These are pretty simple to build but as anything, there are compromises such as the box has to have breakdown capability if you want to be able to remove the isolated subs in both the non- face to face designs. That one face to face design can just have a a 1-2" spacer between the baffle mounted sub and the top mounted sub.. Here an example of a 6 order bandpass compound loaded enclosure. [MEDIA=youtube]euniH1bvJZw[/MEDIA] If you are new to building enclosures, these are most likely beyond what you're going want to try, they are not easy to do correctly. [/QUOTE]
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need help building a subwoofer box for my subs
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