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Need help tuning port low for a fixed volume box
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<blockquote data-quote="XanderMoser" data-source="post: 3209077" data-attributes="member: 574859"><p>WinISD has a really tough time making a flat FR with that sub ported...has a crazy wave in it. The best is with a NET volume of 2.84 cu ft with a tuning freq of 19.5. It's within 1 decibel of reference all the way to about 19 hz, so should make you happy. I can't guarantee you won't run out of excursion at high power though, I'm not familiar with the limits of that sub.</p><p></p><p>I don't have enough parameters to tell you if the port noise would be excessive. But the recommended circle port is 4 in in diameter with a length of 28 in, while the slot port would be about 16 square inches in area with 33 inches of length. Have someone double check that for you.</p><p></p><p>Hope I helped a little, but please don't take anything I said as concrete truth, I'm an amateur at box designing. Good luck with the project.</p><p></p><p>Oh yeah, and everything is with one sub. so make 2 identical enclosures side by side with the same specs.</p></blockquote><p></p>
[QUOTE="XanderMoser, post: 3209077, member: 574859"] WinISD has a really tough time making a flat FR with that sub ported...has a crazy wave in it. The best is with a NET volume of 2.84 cu ft with a tuning freq of 19.5. It's within 1 decibel of reference all the way to about 19 hz, so should make you happy. I can't guarantee you won't run out of excursion at high power though, I'm not familiar with the limits of that sub. I don't have enough parameters to tell you if the port noise would be excessive. But the recommended circle port is 4 in in diameter with a length of 28 in, while the slot port would be about 16 square inches in area with 33 inches of length. Have someone double check that for you. Hope I helped a little, but please don't take anything I said as concrete truth, I'm an amateur at box designing. Good luck with the project. Oh yeah, and everything is with one sub. so make 2 identical enclosures side by side with the same specs. [/QUOTE]
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Need help tuning port low for a fixed volume box
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