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Air velocity?
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<blockquote data-quote="J216" data-source="post: 5448398" data-attributes="member: 589938"><p>Sorry. I didn't realize that was so vague until I read it again.</p><p></p><p>I think I'm looking for a threshold.</p><p></p><p>Here's an example of one that I was playing around with for a home theater sub.</p><p></p><p>I built the box at 2.5 net cubic feet, tuned to 24.5hz. the port is only 2.625"D x 7.75"L. As I expected I ended up with a bunch of port noise. The velocity was around 165 ft/s. according to WinISD.</p><p></p><p>I guess my question should have been how low does the velocity need to be? And is there such a thing as too low?</p></blockquote><p></p>
[QUOTE="J216, post: 5448398, member: 589938"] Sorry. I didn't realize that was so vague until I read it again. I think I'm looking for a threshold. Here's an example of one that I was playing around with for a home theater sub. I built the box at 2.5 net cubic feet, tuned to 24.5hz. the port is only 2.625"D x 7.75"L. As I expected I ended up with a bunch of port noise. The velocity was around 165 ft/s. according to WinISD. I guess my question should have been how low does the velocity need to be? And is there such a thing as too low? [/QUOTE]
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