I have bought a pair of M60s and I am little shocked at the lack of bass when playing in stereo mode (I have a Denon 2803 AVR). Has anyone else experienced this? Any ideas on what could be wrong? Am I correct in expecting these speakers to perform as well as B&W 601 series 3s, Totem Sttaf, or Energy Connoisseurs in the base department?

Thanks in advance.