I just purchased a set from the FRX series - 7's for the front, an S10 sub, and the standard center and rears. For a little bit less I could switch the rears (frequency response 75 Hz - 22 kHz) for the 5's (40 Hz - 22 kHz). I was thinking that this might be useful with some of the DTS CDs that I listen to, and probably couldn't hurt for Home Theater. I use a Yamaha RXV-995 receiver. Anyone running a similar setup, or have any thoughts?