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Low Earth Orbit
DIY Audio
No compromises front loaded double 18” cab
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<blockquote data-quote="David Morison" data-source="post: 137390" data-attributes="member: 2076"><p>Re: No compromises front loaded double 18” cab</p><p></p><p></p><p></p><p>Forgive me if I'm missing something here, but you seem to have increased the port area quite a lot without any corresponding increase in length?</p><p>I'm sure there will be some extra effective length from having the ports built in along the box walls; will that be enough to keep the tuning the same do you think? If so, do you have any firm way of calculating that please? The closest I've seen seems to be more of a <a href="http://www.jlaudio.co.uk/header/Support/Tutorials/Enclosure+Ports/Tutorial%3A+Enclosure+Ports/640397" target="_blank">rough rule of thumb</a> but I've yet to see anything more concrete. I'm not even sure how easily that rule of thumb could translate to triangular ports.</p><p></p><p>Many thanks,</p><p>David.</p></blockquote><p></p>
[QUOTE="David Morison, post: 137390, member: 2076"] Re: No compromises front loaded double 18” cab Forgive me if I'm missing something here, but you seem to have increased the port area quite a lot without any corresponding increase in length? I'm sure there will be some extra effective length from having the ports built in along the box walls; will that be enough to keep the tuning the same do you think? If so, do you have any firm way of calculating that please? The closest I've seen seems to be more of a [URL="http://www.jlaudio.co.uk/header/Support/Tutorials/Enclosure+Ports/Tutorial%3A+Enclosure+Ports/640397"]rough rule of thumb[/URL] but I've yet to see anything more concrete. I'm not even sure how easily that rule of thumb could translate to triangular ports. Many thanks, David. [/QUOTE]
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No compromises front loaded double 18” cab
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