Those Lanzars will take a Hell of a beating from my experience..I blew the Dust covers off of one banging the chitt out of them, and they kept on banging hard!For Cheap subs, they get down!Just as those type R subs.I saw a guy throwing some juice on them at 1/2 ohm load,with I think it was 1500rms, and they were slammin!! gettin down man.He banged on them for about 45 min at 1/2 ohm, and they needed to cool down for a bit, but he went right back at it, and they took on the juice again,was a guy at the car audio show in an xcab chevy..they were in ported enclosures