Drivers rattle worse than a spray paint can when any reasonable amount of bass is played. Right side driver is significantly worse than left, but unless I EQ bass down (ADI-2 DAC) it's intolerable.
DELIMITOK, so it isn't just me. Thank you. I am seeing the same issues. Right side is lower in volume and they rattle with bassy tracks (no bass boost or anything applied).
DELIMITMust be QC. Went back and listened to a couple of the heaviest bass tracks I have and cranked the volume up a bit just to make sure. No noticeable rattle for me. I can't hear either driver being louder than the other to my ears...but full disclosure, I shoot a lot - that may be a factor.
Hopefully it's just a QC issue and Drop gets you straightened out, then fixes the QC issue with Sennheiser. I know I wouldn't be happy if I were in your shoes, that's for sure.