I have a Klipsch RW-8 that I have been quite pleased with in terms of music listening. However, it has not been enough for the movie watching. I have decided to buy another Klipsch subwoofer because of this. For whoever has experience with two subwoofers, what type of results should I expect from using two subwoofers (that are not the same) at the same time. Otherwise, should I just put the subs next to each other and switch the cable between the two? Or could I keep them both connected to the receiver at the same time using the Y connector? What setup would give me the best results?