Thanks to all for all the information. Elevick, are all the subs you mentioned active or passive? I checked my little monoblock last night. It actually outputs 250 watts, not 50 watts. Thanks for the info on the Sunfire. It was actually on my list. Now I can take it off!
What to look for in a sub?
I've been pretty happy with my HT setup using a Yamaha RX-V1, a mix set of speakers from Definitive, Paradigm, Acoustic Research, and a really old Fosgate subwoofer. (Most of the fund goes to the 2-channel audio setup) I am moving to a new house with a smaller living room, and the sub is too big. (30"W x 30"L x 15" H) I need to find a replacement sub that will fit into the new living room. What criteria should I look for in a sub? Also any suggestions for a good sub (new or used) in the $800 range would be greatly appreciated, active or passive. (I currently have a Marantz 50w monoblock driving the Fosgate).