Answers: if you really want the "best" woofer, after there is really simply one way to shift.
http://www.onlinecarstereo.com/CarAudio/...
this Premier woofer will leave those L7s contained by the dust. this woofer was built for SPL and is the currnt world account holder. team Kicker cant capture close to what these guys hit. if yuo dont believe me, just read the reviews.
upright luck
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