I have a onkyo tx nr509 right now I have a pair of rb 61s as my lefts and rights but I want new floorstanding speakers and was thinking about the rf 62s Or 82s but don't know if this thing is powrefull enough to not damage the speakers by underpowering them. I really dont understand all this electrical stuff on receivers and speakers if my receiver is not strong enough is there any way to increase the power in the receiver or something.