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<blockquote data-quote="bbeljefe" data-source="post: 8156623" data-attributes="member: 655960">A transmission line is a type of enclosure. Specifically, a quarter wave transmission line or, t-line. They&#039;re remarkably simple boxes to design but they take up a lot of space. The benefits are that they don&#039;t suffer from port noise like a ported box but they do reach low notes like no ported box can. A t-line will usually play a full octave below tuning, which is usually the Fs of the driver. So for a couple of tens with an Fs of 32 hz, in a t-line they would play well below anything you&#039;ll find in most music and do it efficiently enough to hear or feel it well.<a href="http:////forums/car-audio-build-logs-cars-trucks-suvs/587392-jbl-gto-10-%BC-wave-t-line.html" target="_blank">Here are a couple t-lines I&#039;ve built. One with a ten.</a><a href="http://www.quarter-wave.com/" target="_blank">And here&#039;s a website that explains transmission line theory pretty well.</a>If you want to build one, I&#039;ll be happy to answer any questions you have. And if I don&#039;t know the answer, I&#039;ll make up a cool story that makes it seem like I do. ;-)</blockquote>

[QUOTE="bbeljefe, post: 8156623, member: 655960"] A transmission line is a type of enclosure. Specifically, a quarter wave transmission line or, t-line. They're remarkably simple boxes to design but they take up a lot of space. The benefits are that they don't suffer from port noise like a ported box but they do reach low notes like no ported box can. A t-line will usually play a full octave below tuning, which is usually the Fs of the driver. So for a couple of tens with an Fs of 32 hz, in a t-line they would play well below anything you'll find in most music and do it efficiently enough to hear or feel it well. [URL="http:////forums/car-audio-build-logs-cars-trucks-suvs/587392-jbl-gto-10-%BC-wave-t-line.html"]Here are a couple t-lines I've built. One with a ten.[/URL] [URL="http://www.quarter-wave.com/"]And here's a website that explains transmission line theory pretty well.[/URL] If you want to build one, I'll be happy to answer any questions you have. And if I don't know the answer, I'll make up a cool story that makes it seem like I do. ;-) [/QUOTE]

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