Thanks JohnK... I have a coat closet in the left corner of the room... leaving the door open makes a dramatic improvement! Thank you for that idea. There is still a hint of resonance between 100 and 200 hertz, but it is much improved. I am thinking about adding some tapestries or quilts ... I suspect it is possible to decorate a room with sound in mind. :-) Thanks for the advice, things are starting to look (sound) better in my lousy room...

-Jon.