I'm trying to get the biggest center channel speaker my denon 1803 will allow. The manual says its rated at 80 watts for the center channel. I have Yamaha side speakers and like the Yamaha center nsc444 but I'm afraid my system won't power it. Any advice? The nominal power rating on the Nsc444 is 100 watts. Does this mean I need that much to get good sound? Also , can I mix this acoustic suspension center with bass reflex sides? Thanks