Hi Edbostan, I tend to agree with you, these tweeters can be excellent in many regards or slightly harsh with poor recordings. Jazz, classical, Diana Krall all sound great . I noticed some harshness when playing Elaine Page- Memory too, but I also noticed it when I took the same CD to audition the great Dali Oberon 5- the same harshness at certain notes was still there. Rearranging my room furnishings has helped a bit, but the biggest improvement has been to not toe-in the speakers towards my listening chair. I have my speakers about 40cm from the rear wall and pointing down the room at 90deg to the rear wall with decent results.