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How does a 4th order bandpass work?
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<blockquote data-quote="mat3833" data-source="post: 8793952" data-attributes="member: 587645"><p>I'm a little bit confused here. There isn't really any "theory" or "abstract minutiae" in this thread. All of the principles are simple. A basic fundamental understanding doesn't require "theory" nor anything abstract. Literally the most complex thing in this thread so far has been my reference to a rarefaction wave... </p><p></p><p>Enclosure design beyond a basic sealed or ported enclosure is in its very nature complicated. "knowing what works" is the funniest thing I have heard in reference to a 4th or 6th order enclosure. Yea, the math is there. But for anything more complex than a ported enclosure it is a waste of time and wood to just plug numbers into a calculator and build it. You need to take into account the transfer function of the vehicle, the amount of air being moved by the subs to optimize port area/volume, the customers musical preferences, the list goes on. </p><p></p><p>You can just throw some wood together and make a leaky sealed or ported box that isn't anywhere near ideal and get decent results. If you have a leaky bandpass enclosure, it's going to be a bad time and most likely end up with damaged woofers. </p><p></p><p>Your picture looks pretty. Depending on what subs/how much power you are going to run, that port area looks pretty small. Is that a 2:1 SPL oriented box or do you just want to do hair tricks like the cool kids? </p><p></p><p>Matt</p></blockquote><p></p>
[QUOTE="mat3833, post: 8793952, member: 587645"] I'm a little bit confused here. There isn't really any "theory" or "abstract minutiae" in this thread. All of the principles are simple. A basic fundamental understanding doesn't require "theory" nor anything abstract. Literally the most complex thing in this thread so far has been my reference to a rarefaction wave... Enclosure design beyond a basic sealed or ported enclosure is in its very nature complicated. "knowing what works" is the funniest thing I have heard in reference to a 4th or 6th order enclosure. Yea, the math is there. But for anything more complex than a ported enclosure it is a waste of time and wood to just plug numbers into a calculator and build it. You need to take into account the transfer function of the vehicle, the amount of air being moved by the subs to optimize port area/volume, the customers musical preferences, the list goes on. You can just throw some wood together and make a leaky sealed or ported box that isn't anywhere near ideal and get decent results. If you have a leaky bandpass enclosure, it's going to be a bad time and most likely end up with damaged woofers. Your picture looks pretty. Depending on what subs/how much power you are going to run, that port area looks pretty small. Is that a 2:1 SPL oriented box or do you just want to do hair tricks like the cool kids? Matt [/QUOTE]
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How does a 4th order bandpass work?
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