I'm trying to decide whether to go for the fs2 or wait for the fs1. I've read many of the threads on the various set up options for the fs2's, but I noticed somewhere that someone said that the sub on the fs1 had a built in amp and the fs2 didn't. I presume this is what is meant by passive / active subs ? Looking at my manual for my Sony 940 it looks like there is only a connection for a active sub. Does this mean that you can't connect a passive sub to the amp ? Does this also mean that connecting the fs1 to my amp means that the power to drive all the sat speakers comes from the amp in the sub ? If this is the case does it mean that the 100w per channel of power generated by the amp is wasted ?