Since two months I've a Sennheiser HD 650, connected with my NuForce Icon HDP -> SPDIF from PC. I like the sound from this setup, but I hear a resonaiting sound from the right ear shell. This can be heard in movies, in games or with a bass test. This is very annoying and disrupted the movie/ games experience. In bass tests, the headphone resonating at < 70 Hz. At 45 Hz is it annoying noise very clear to hear.
My question is: do more people have this problem or is it just this headphone what resonates?