Jay, Kcarile and Others,
It might be just my set-up, my hearing, or the receiver, but I found what seems to work for me. My bass and treble were set to neutral. i adjusted the treble down (about a quarter from neutral) and the speakers sound great! i have hardwood floors and little furniture and no rugs, so that might have been a factor.
i guess it shows that there are many variables (and potential solutions) that need to be considered.
hope this might help someone with a similar "problem".
thanks all
greg