Originally Posted by kalbee
If you're only to continue talking about the specified max loads then carry on. I'll just move away.
You're missing half the picture.
Are you able to demo a pair of the same headphones at a local store or via another local member? If there is no way to otherwise verify if your headphones are indeed damaged from the accident, you should compare it with another pair for best results. If they are indeed damaged, if the ebay seller was an authorized seller then you may be able to use the warranty for a repair. Otherwise you should still be able to get it repaired although it won't be free.
The E10 cannot muster an impulse that can damage the headphones.
Damage thresholds are usually given as RMS values---the instantaneous power can exceed the RMS value, especially during transients; however headphones and all other speaker drivers are designed to handle those.
Because the audio waveform is limited to finite amplitude (by voltage rails on the amplifier) there is no impulse that the E10 can generate that can damage the headphones unless the headphones were defective to begin with.
Hope this clears up the misunderstanding,