I use a pair of JL Audio F110's with my BE-718's and they sound great. I used the supplied microphones and let them set themselves up automatically. Then I played around a little bit with placement and volume settings but really they were almost perfect after the auto setup sequence. It was too easy-maybe I just got lucky with my room and system integration but it certainly wasn't the time consuming ordeal that most members write about. I didn't start with one JL and add another later-I started with two. I previously had one 15" powered sub that I assembled from a kit I bought from Parts Express-a Dayton sub. That one didn't integrate very well. The JL's are much more musical. I am a firm believer in stereo subs-a hotly contested topic here but I've tried both single and double although they were different brands and sizes. One sub added bass. Two subs added bass and kicked out the corners on the soundstage-dramatic! My take on one sub vs. two is this: bass may be omnidirectional but that doesn't mean you can't tell where it's coming from! That just means that from its source it radiates in all directions outward. Maybe I'm biased. When I was a kid the family hifi consisted of a stereo that had a big floorstanding unit with the turnatable, tweeter, and a huge woofer in it, plus a satellite speaker one third the size with a single driver in it. It sounded dumb in the bass. Later my dad got a receiver with a pair of B.I.C. Venturi speakers and it was on! Harry Nillson's "Jump Into The Fire" had the greatest bass line intro.