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Honestly guys yes JL 13w7 rocks brother in law has one but my 15.2 Orion HCCA stops hands down pure spl and the excursion surpasses jl by another inch for a total of 4" of flex my cousins 10.2 HCCA hit a whopping 142db and thats a 10.

I'm seriously laughing at the last review this sub got on here. He needs to get off the mainstream subwoofer BS. The TC Sounds LMS Ultra 5400 has proven time and time again, that even with an 18", you can get the best sound quality on the planet. The JLW7 is $635 here on OCS, which is not bad all. However, the LMS Ultra is only $800-$900 from an authorized dealer and more capable than this subwoofer. I love how people don't look past the W7 once they hear one or hear the hype about it. The LMS Ultra 5400 is one of the most powerful SQ subs in existence and would demolish any W7 on its worst day in sound quality and output capability. Total harmonic distortion @2000W-rms between 20-100 Hz. is only 0.4-0.7% at 110db and as output level increases, the distortion rises less than any other woofer ever tested on the planet. No JL subwoofer can clain those numbers or anything close to it, yet they won't stop with the "JL audio is best" song. Car Audio Noobs.

i love when people say you can get "better" products for cheaper and what not. they are just retarded. JL makes products STRICTLY for SQ.  this is the reasoning for the 3 ohm voice coils. and the 13.5" over a 15"...because it sounds better with the design they use!! and its not ALL in the enclosure, the amp means a huge deal. since JL also makes the best amps on the market as well with the slash and HD series, you should def use one of their amps to run a W7.  ive heard 2 12w6v2's running off a 1000/1 and it hit 149.5db AND IT WAS STILL CLEAN!!  yes you can get more spl from other brands, but they dont sound anywhere near as clean ie. audiobahn, which sounds like complete $h!t at high volumes, thats why they are so cheap. and 1 JL watt is equal to 2 watts of other brands. i think the only thing i have ever heard that was near in sound QUALITY was xtant, which no longer exists. there are companies that still cant compete with the original 20 year old w6's. JL is definately AHEAD OF THE CURVE