I fully agree with Steve. I think your ears have a short 'warming up' period in which they get accustomed to the sound every time you start playing.

I also had to get used a bit to the treble of Meridian at first, even though I never used speakers with harsh tweeters. You really have to give it some time (weeks) before making a final judgement. In the beginning I pushed up the treble by 2 steps to compensate, later I set my 5200's flat and I'm very happy.

Main System: Speakers DSP3100, Apple MacMini