[Bilavideo]

Quote:

different things cause the rattle.
 
Significant DC offset will melt the voice coils off of the cones and obviously ruin the drivers. For some reason the voice coils dont "open" when this happens. You should check your amp(s) for DC offset and your power on/off habits. Its seldom a good idea to leave headphones plugged in when turning amps on and off.

Good point!

 

[nikongod]

I own a pair of RS-1 drivers that had the voice coils melted off.... Not by me (Its a longish story), but it makes me sad anyways.