I have an REL S5 and would not trade it for anything. It does everything i, prior to buying it, that i wanted and then some. I great product.The one thing I really like about the Rel is the ease and seamless integration with the main speakers. It may not have the best specs. but numbers don't give the full story. one of my worst purchases was a piece of equipment with #'s to die for. I hated every moment with it..
bdp24. Thanks for the wealth of information you have given. I like the concept of the servo system. And I have read nothing but good about the Rhythmik's musical performance. Since my system is in the LR, I have a limited space and I want 2 subs. The price difference between the 12 & 15" is very small. So I find myself in a quandary of space vs economics