Using Yamah RX-V2700 receiver. Subwoofer works fine with 5.1 movies. For example, the Daft Punk soundtrack in Tron:Legacy sounds awesome. However, when I play the actual soundtrack from my music collection (2ch stereo PCM), the subwoofer is barely budging and it sounds weak as hell. The subwoofer *is* putting out some bass, but very very little. If I really crank the sub, I can get it close to the movie version, but not very -- and obviously I don't want to have to do that, because then one day I forget, play a movie, and blow my sub.
I've tried the various modes. The "enhanced" modes sound somewhat better but also processed; I don't want the sound affected really.