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double check my t line math
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<blockquote data-quote="Jroo" data-source="post: 7316729" data-attributes="member: 574112"><p>After looking at a bunch of t lines and forums, I thought I would try one. I found a site that had some simple math that I followed and want to know what you think. Mind you I am using a cheap</p><p></p><p>10" sub with Fs around 30hz.</p><p></p><p>For line lenght I followed this:</p><p></p><p>Speed of sound (1130 ft/sec) divided by subs Fs and then divided by 4 again. Gave me 9.4 feet</p><p></p><p>For port area I followed this:</p><p></p><p>pi x radius x radius. (middle of dustcap to middle of surround) My sub ended up being 5" roughly.</p><p></p><p>3.14 x 5 x 5= 78.5. So my port area would be 78.</p><p></p><p>So I would have a T line about 9 feet long or slightly shorter with a port of 78. This look right so far to you guys.</p></blockquote><p></p>
[QUOTE="Jroo, post: 7316729, member: 574112"] After looking at a bunch of t lines and forums, I thought I would try one. I found a site that had some simple math that I followed and want to know what you think. Mind you I am using a cheap 10" sub with Fs around 30hz. For line lenght I followed this: Speed of sound (1130 ft/sec) divided by subs Fs and then divided by 4 again. Gave me 9.4 feet For port area I followed this: pi x radius x radius. (middle of dustcap to middle of surround) My sub ended up being 5" roughly. 3.14 x 5 x 5= 78.5. So my port area would be 78. So I would have a T line about 9 feet long or slightly shorter with a port of 78. This look right so far to you guys. [/QUOTE]
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double check my t line math
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