I used to hit arond 150-152 db's with a pair of the aluminum cone 15's, in a ported box, back in the day with my Grand Prix. I won several db dragracing events with this setup. Ran 2 Directed 1100d's with it. It was lound. I found it very interesting that Eclipse directly says that these subs wont work right in a ported box. Using my computer aided box design software, i made one hellofa box. It sounded clean, hit hard, and was very loud. They make lots of bass, if done correctly. And they like power, LOTS of power. YOu can feed them 2000 watts a piece. The all metal frame, all metal cone, make for a excellent way to dissipate all the heat. The subs can take that abuse and power, cause i had my 1100d's brided togher in mono to the pair of subs(yeah, i ran them at 1/2 ohm!)

13.5 @108 MPH-2.2 60ft(stupid FWD!)
S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential
fuel injection)
My webpage: http://eclipsed4evr.home.comcast.net
-1998 Mitsubishi Eclipse RS-T- "Toy"
-1992 Plymouth Laser Turbo AWD(SOLD)
-2000 Honda CR-V(daily)