Paradigm PS 1000 http://www.paradigm.com/products/archives/paradigm/ps-series/ps-1000 Mine is about 10 years old, but has not been used in at least 5 years. ( Put it away as I was afraid my kids would destroy it, and because it literally shook my room to the point where the ceiling tiles would move. ) It kicked butt THEN, but don't know how it stacks up against a new sub in the $500 range. I hope to set it up real soon and see if it still works, but right now I don't have anything but the sub and rcvr for the new media room. ( Being built now ).