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How does a 4th order bandpass work?
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<blockquote data-quote="Grimmjoww" data-source="post: 8792675" data-attributes="member: 682803"><p>I'm a little confused that the above replies didn't answer your question, the guys that responded are very well versed in how enclosures work. Guess I will break it down Barney style and see how that goes. If you have any type of sealed container and you pressurize it with air you now have a pressurized container or "vessel." Since a woofer is capable of moving in opposite directions this almost acts like a piston in a 4th order. The woofer pressurizes the sealed chamber, the pressure in the sealed chamber has no way to be spent unless it 1 - moves the woofer back, or 2 - there is leak around the woofer cone or seal to let it escape into the ported chamber. Since the chamber is sealed it will also control excursion limits unless it's overpowered. So in my view what you get is a piston firing back and forth with added pressure from the sealed enclosure. This will let the woofer down travel with more force into the ported enclosure. Your sound actually comes from the port in the box.</p></blockquote><p></p>
[QUOTE="Grimmjoww, post: 8792675, member: 682803"] I'm a little confused that the above replies didn't answer your question, the guys that responded are very well versed in how enclosures work. Guess I will break it down Barney style and see how that goes. If you have any type of sealed container and you pressurize it with air you now have a pressurized container or "vessel." Since a woofer is capable of moving in opposite directions this almost acts like a piston in a 4th order. The woofer pressurizes the sealed chamber, the pressure in the sealed chamber has no way to be spent unless it 1 - moves the woofer back, or 2 - there is leak around the woofer cone or seal to let it escape into the ported chamber. Since the chamber is sealed it will also control excursion limits unless it's overpowered. So in my view what you get is a piston firing back and forth with added pressure from the sealed enclosure. This will let the woofer down travel with more force into the ported enclosure. Your sound actually comes from the port in the box. [/QUOTE]
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How does a 4th order bandpass work?
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