If you had speakers in the same room that sounded good to you, return the speakers. I had the same issue with B&W 702 S2 towers. The dealer told me to burn them in for 100 hours. 4 days later they sounded the same. I returned them. Life is too short. A lot of good speakers available that will sound good to you in your room. Suggest buying from a dealer or direct from manufacturers that will let you buy, try and return if necessary.
Speakers sound too bright.
I just bought a new pair of Martin Logan 60xti speakers. They are too bright and fatiguing. I would like to avoid returning them. I've tried toeing them in and out. I cant get them further than 1ft away from the wall (back of speaker to wall). I have a about 1-2 hrs of play time on them. Not sure if break in will help settle the upper frequencies down. Any suggestions...?