JL clean sweep?...send it back
If you're THAT much into quality...look into the JBL MS-8 and Audison BitOne.1
Speakers...hrmmm. Sound = 10% purchase and 90% install. If you're really worried about the quality of your speakers you'll end up learning how to understand the t/s parameters so you can install them correctly. If you're THAT into it I'd probably tell you to purchase some seas, peerless, dayton, or some other raw speaker driver. People seem to have lots to say about Usher these days too. Anyways, you get back much more for your dollar bill that way. Most "SQ" installs don't use passive cross overs either. Each speaker location can easily determine a different/better cross over point to utilize with the surrounding environment. Then your next question is, can your speakers handle those requirements? Sometimes you have to hear the speaker to determine whether or not you like it too.
I would recommend this...
JBL MS-8 (cheesey intro) -- should make tuning easy for you.
http://ms8.jbl.com/
a/d/s/ 346is component set from ebay. ~$250
The only reason I recommend these is because it's easier for me to tell you how to installMatt will disagree entirely
However, I've been able to achieve a nice centered stage with minimal install effort. Remember, the more you put into your install the easier it is for speakers to reach their potential. If you're not familiar with a/d/s/...they owned Orion and PPI. Their px/a series was kind of nice but probably broke their back
Their parent company was braun.
TC Sounds 12" LMS-R -- subwoofers.
I recommend these just because they look like they're kind of bad ass and I want somebody to test themMatt approves of some variation of these...
http://www.parts-express.com/pe/show...number=293-658