I just purchased this sub woofer to pair with my LS50's. Once I found its 'sweet-spot' (best crossover frequency), I found it complements them very well. Now, I was going for subtly to add to the system, not thumping loudness. In the low setting I have it on, it pairs very nicely (almost as if the speakers were providing that level of bass). I would highly recommend.Visit
Audioreputation.com and find more details.