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Message: <blockquote data-quote="nweibley" data-source="post: 361893" data-attributes="member: 551888">Below 30, just for the record, I tried something for you. I have two friends with JL Audio 12" W6s, one I buildt to exacting JL sealed standards, one to exacting JL ported standards. Both boxes were built by me, and honestly perform excellently.We ran about 10' of 8 ga wire from the same amp to a fully carpeted room in my house (through a window), and loaded the area up with pillows and cushions to deaden any reflections and get the true bass, straight from the woofer.Here is what we concluded:Ported... rap does sound boomy, yes. Rock, could be slightly better, but still sounded very good, but I could hear the driver getting a little side-tracked as we cranked it. It was there, but you wouldn't notice it unless you have an SUV and the box facing you. Classical was good, and it was nice and low. Frequency sweeps from 150hz-18hz showed a few spikes in output that were annoying, but not that bad. Output was really good for such low excursion... overall it sounded good and was very acceptable.Sealed... rap wasn't nearly as boomy, but still sounded appropriate. It could have used a little bit more output, but hey, we had pillows everywhere, so it isn't totally realistic. Rock sounded great and was reproduced very well, and for the most part, the sub had no extraneous noises. Classical was tight, but was playing lower than the ported box was. Sweeps were very flat, I counted one noticable spike in output. Output was a bit short of the ported, but it was still plenty loud for the user who just wants to augment their low-end.So there you go... no math, no equations... just real boxes.Ported gave me a bit more output with some nominal noises and a less flat frequency response.Sealed flattened things out, but lowered output. All that I heard was bass though, no noises that didn't belong.-----Nate</blockquote>

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