I am fairly sure the buzzing is due to the pressure fluctuations of the LF unit inside the speaker cabinet mechanically exciting the entire MF and HF drive assemblies if they are not screwed in correctly. Too loose or too tight = audible mechanical buzzing. The issue will be much more prominent with the EB's due to the low freq energy they exert. Infact it may be a non-issue with lower PMC models.
Also, I had not realised for weeks until I played a track that had only sub-100Hz content for a few bars. I then became very sensitive to it and noticed it more and more. As said I have now been able to eliminate it completely however it took alot of tinkering with the screw tightness.
I too would love to hear from PMC on this... although I guess the answer will be "dont touch the screws"
|