Originally Posted by kmlzbmr
ok thanks so each channel has its own 110W and by using less speakers i can't use power from another channel meaning if i use 5.1 instead of 7.1 i wont get extra power to my fronts by using less speakers or bi-amping it will still be 110 to my fronts?
Using less speakers, AFAIK, will not result in more watts being sent to the remaining speakers. That would be dangerous even i would think!
As for bi-amping, each connection will feed the full output, so you'd be feeding 110W to each terminal on your speaker.
If i may ask - Why are you asking these questions? Given the fact that the RTi A9s are not exactly cheap speakers, i'm a little puzzled that you are asking these questions. It indicates to me that perhaps you bought these high-end speakers without knowing what they need to make them sound good?
110W per channel (from a good quality amp, like what's in this level of receiver) is typically plenty to drive most speakers. I do not know if these Polks are terribly inefficient and need more power? In that case, get a receiver that has pre-outs (for the front channels at least) and get one or more separate amps to drive those Polks. The beauty is that you can add the external amps later if you want to, as long as your receiver has pre-outs for those channels
So you could start with a receiver like this one, use the amp section of the receiver for now, and then later add external amps.