You wrote that your player was in a cabinet. I'll bet you've got some serious standing waves in there. I would pull the player out and, like Alan said, put a brink or several good-sized books on top and see what happens.

Does this happen with sources other than DVD? I'm still wondering about the projector and cabling.....

::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::