SvS b4 plus. thats a manly subwoofer. I read a review, somewhere, on this sub. The guy was using it OUTSIDE, with a crown K1 amp(1000wattsRMS) and it did 15hz at 100db and the amp shut down. The guy needed a more powerful amp to get the real numbers on the sub, but they didn't get one . i don't know about you, but the b4plus could waste at 1812, and you would have alot more money left over. Im not saying the 1812 is crap, but i wouldn't shell that out knowing what the b4plus is capable of. on an opposite topic, Svsess(blah?) cheapest sub, pb10 I believe, is a monster for 400 bucks. I read a review, somewhere, wher a guy was testing outside, and it was within +/-1DB from 100 or 120, to 19hz, and inside it went down to 15hz at +/-3db I believe. You gotta hand it to SVS, they make sweet subs, for a great price.