How do you typically listen to a cd? 2 fronts and a sub? If that is the case ...do you get more power to the two fronts? For instance on 50 watt x 5 receiver...would you get 100 watts on the two fronts? assuming your sub is self powered? What I'm getting at here is how much power do I need to run a surround system. Can I get by with 50 watts x5 for a pair of rti8's and a self powered sub?