I have a denon 4800 receiver running my ht. I am thinking about building a 2 ch outfit. I have a 120 watt x 2 sonance power amp. thinking about buying a nice little preamp, my ? is can i hook my power amp and receiver up to one pair of speakers at the same time if i only run one of the two at a time . other word i would run the denon for HT and power amp for 2ch i would have two + and two - hooked up to one speaker but only one would be in uses at a time, or could it feed back through and burn up the one that is not being used , i will be running klipsch s-b3s thank you