Has the driver stopped working completely?
About a month ago the right driver on mine went really quiet, probably about 10/20% volume, I used a small brush and gave it a good clean (even though it looked fine) and it came back to life - it's been working fine ever since.
I have purchased a back up pair now though, just in case...
The right side is dead silent and the left side is noticeably softer sounding, when compared my E1000.
I actually placed another order for a backup pair since I really like them, but had cancelled that as well until this defect can be sorted out. I believe it might be a rare case of QC issue?