Hello, I'm fairly new to the HT world. I currently have a Sony DD 5.1 reciever and Klipch Reference speakers. I like the speakers and plan to keep them. I have the RF3 fronts, RC3 center, RS3 surrounds, and a KSW12 sub . I have a chance to buy a used Denon reciever with 6.1 capabilities for a good price. I would like, in the not too distant future, to have a 7.1 receiver (That's the way things seem to be going). After all of that, here's my question : If I buy another pair of RS3 surrounds, can I use one of them as the rear center for 6.1 until such time as I am able to afford a 7.1 reciever and then use both of the RS3's as a pair? Thanks in advance for your comments.