oops! 
Wanted to clean out the sponge dust covers on my DT990pro headphones and the ring to release the sponge required me to lift it up with a small slotted screw driver. The screw driver slipped and tore a small hole in the white paper-like material that covers the driver. Still sounds fine but wondering if I should do something to fix the small tear. I blame beyerdynamic for not providing an easier method to remove the ring.
Wanted to clean out the sponge dust covers on my DT990pro headphones and the ring to release the sponge required me to lift it up with a small slotted screw driver. The screw driver slipped and tore a small hole in the white paper-like material that covers the driver. Still sounds fine but wondering if I should do something to fix the small tear. I blame beyerdynamic for not providing an easier method to remove the ring.