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<blockquote data-quote="Rashaddd" data-source="post: 5314708" data-attributes="member: 592162">Sub is a 10&quot; TC OEM, SVC 4 ohm, powered by a bxi2607 (rated 800 rms @ 4 ohms)Box is 3 cubes net (about 5x Vas of the sub), tuned to 27hz with 55sq in of port area (cone area = more like 45sq in), so port area = over 20% larger than cone areaHere&#039;s what happens on a 27hz tone: notice the amount of sub excursion relative to the enormous amount of port movement...despite a port that is larger than the effective cone area of the sub.More to come with closer to 80sq in of port @ ~32hz, and then over 100 sq in of port @ ~38hzFs of the sub is 31hzEnjoy //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif<a href="http://www.youtube.com/watch?v=htGe-buXR1k" target="_blank">http://www.youtube.com/watch?v=htGe-buXR1k</a>power supply is dropping to 11v, resting at 11.9Port noise //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif</blockquote>

[QUOTE="Rashaddd, post: 5314708, member: 592162"] Sub is a 10" TC OEM, SVC 4 ohm, powered by a bxi2607 (rated 800 rms @ 4 ohms) Box is 3 cubes net (about 5x Vas of the sub), tuned to 27hz with 55sq in of port area (cone area = more like 45sq in), so port area = over 20% larger than cone area Here's what happens on a 27hz tone: notice the amount of sub excursion relative to the enormous amount of port movement...despite a port that is larger than the effective cone area of the sub. More to come with closer to 80sq in of port @ ~32hz, and then over 100 sq in of port @ ~38hz Fs of the sub is 31hz Enjoy [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] [URL="http://www.youtube.com/watch?v=htGe-buXR1k"]http://www.youtube.com/watch?v=htGe-buXR1k[/URL] power supply is dropping to 11v, resting at 11.9 Port noise [IMG]//content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif[/IMG] [/QUOTE]

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