I have a Yamaha RX-V350 which I am generally impressed with. My front speakers are Tannoy Mercury M1s which I'm also pleased with. I'm not sure though whether these should be set to "medium" or "large" on the Yamaha. When set to medium there is quite a dramatic drop in volume compared to large, but when set to large the amp seems to ignore the sub even though the "subwoofer?" option is set to yes. The sub works great when the speakers are set to medium). My question is: does anybody know whether there is a way to use the full range of the Tannoys as well as the sub?