I recently reconfigured my stereo system (around a newer TV), and I've noticed that my speakers seem to be somewhat muddy, with a hump around 230 Hz (I was using DVE's rattle test, so my reading might not be that accurate.). This is not welcome, and I was wondering what effects (if any) higher mass speaker stands might have. Receiver is Onkyo TX-SR502. Main speakers are B&W DM303. (corrected from original posting) Centre speaker is an LCR-3 Subwoofer is a Dayton ten inch (shouldn't enter into calculations). Current speaker stands are Omnimount WS-16. They aren't too stable. Floor is plush carpeted.