Ive posted pics awhile ago of my system. This is my used paradigm pw2200 I added yesterday. I didnt want to go with a sub but my basement for some reason sucks the bass out of the place. Its set on a lower htz and at 3/4 power so it doesn't overwhelm the martin logans. I may turn it down a little more. It certainly added that low end thump that was missing. Im using a McIntosh mc352 amp, Ayre k5xe pre, Martin Logan odyssey speakers and a emotiva erc 3 cd player. I certainly was lacking some bass. Its not the speakers fault though cause every set of speakers I've rotated in have sounded bass shy in this room.