Ok what exactly is a bottomed out driver? I don't have any EQ on and I tried listening to this at high levels and medium levels and the clicking is still there however, it seems to go away when playing at a low level. Not all songs do this. So I'm not sure if its the headphones because I can listen to bass head bass boosted (bassnectar) which has intense bass and there is no clicking whatsoever in that song. Just search YouTube "bass head bass boosted" and cluck on the one with 300,000+ views.
There should be no clicking on the song listed before unless you are over driving the headphones. You might have blown the drivers. If you continue to hear clicking on certain songs at medium volumes I would say they are blown. A blown driver can sound ok on some songs and bad/click/distort on others even at medium volume. I blew a driver using pink noise after only 1 hour at low-medium volume.
Drivers can be damaged by causing the driver diaphram to distort or bottom out from over excursion in which case you will hear it if it has been damaged. Damaged drivers make strange sounds from clicking to buzzing during bass notes. If you use enough power to blow the coil (melt it basically) then you'll probably hear nothing.
Edited by Rocko1 - 10/24/12 at 8:30am