Is there a way to tell if you've messed up a driver in your headphones?
maybe some sort of sound file that goes through different frequencies, so you can see where it 'crackles', or something like that?
Nothing has happened to them.
I just notice every so often that certain frequencies make a "crackling" sound.
For instance, I just listened to Stairway to Heaven (FLAC) and at one point, around 3/4 through the song, certain guitar notes made the crackle sound.
At first I attributed it to flaws in the songs themselves, but in Stairway to Heaven?