Nope. JL w7 doesn't have an advantage in SPL or SQ over almost any other woofers in its price class.
I'll admit that I am a little biased against JL Audio, but if you look at other woofers that cost close to the same, they either blow it out of the water in SQ, in SPL or both, and aren't as hard to build a box for. Don't get me wrong, it's a very nice driver and has a nice mix of SPL and SQ, but pound for pound and dollar for dollar, there's way better stuff out there.
A good friend of mine is an authorized JL, Memphis and Planet Audio dealer. He uses the high end Memphis gear in his competition car with PA amps driving them. Why? Memphis subs are louder (and cheaper!) and JL doesn't make an amp bigger than 1kw.
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