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<blockquote data-quote="T3mpest" data-source="post: 8365995" data-attributes="member: 560148">Box is small as others have said.&nbsp; 12 cubic feet net is more in line with what I would want for 2 18&#039;s.&nbsp; While sundown may 4 cubes for their 18, they also expect everyone will be running1.5-3x rated power on them too lol.&nbsp; They probably do it so more people &quot;can fit&quot; 18s and to reduce mechanical failures.&nbsp; Without hearing the setup it&#039;s hard to say what&#039;s wrong with it inherently as all cars are different and that adds a LOT to the equation.You seem to have more than adequate port area, given cone area, box volume and power available.&nbsp; If you can build your box a bit bigger I&#039;m sure the low end would improve, especially in a big car like that, 5-6 cubic feet net is as small as I&#039;d want daily for an 18 unless my car had outrageous cabin gain on the lowest notes I wanted to hit. Many conventional&nbsp; 18&#039;s I&#039;d even be want between 6-8 cubic feet net before I would run them.</blockquote>

[QUOTE="T3mpest, post: 8365995, member: 560148"] Box is small as others have said. 12 cubic feet net is more in line with what I would want for 2 18's. While sundown may 4 cubes for their 18, they also expect everyone will be running 1.5-3x rated power on them too lol. They probably do it so more people "can fit" 18s and to reduce mechanical failures. Without hearing the setup it's hard to say what's wrong with it inherently as all cars are different and that adds a LOT to the equation. You seem to have more than adequate port area, given cone area, box volume and power available. If you can build your box a bit bigger I'm sure the low end would improve, especially in a big car like that, 5-6 cubic feet net is as small as I'd want daily for an 18 unless my car had outrageous cabin gain on the lowest notes I wanted to hit. Many conventional 18's I'd even be want between 6-8 cubic feet net before I would run them. [/QUOTE]

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