Dist or resonance in upper frequencys b&w 685
Im a very happy owner of b&w 685 since a couple of months. However I noticed some distortion or resonance in the upper frequences.
This is very hearable in special songs through spotify or other sources for that matter.
Song intros when this is highly noticable in is:
Michael Jackson - Man in the mirror
Ellie Goulding - Lights
Foo Fighters - Doll
It seems to be the same frequency in these songs that causes the problem.
I have tested the speakers from each others. The Left one has the same issue as the right.
I have also had the same problem using different amp. My current amp is Marantz PM 7004.
Is this normal? It shouldnt. Something wrong with the speakers?