Quote:
Originally Posted by
Jon L 
Well, this is the modded HD580 in question. Hopefully the owner will see this post and respond.

To remove the foam there are two things.
Foam in teh inner side of the cups -- easy enoguh. Just pull it, it comes out without resistance.
The next foam is inside the grilles. Remove the grilles. Once done, You can grip the foam in teh center and pull it out. I doubt you will ever be able to return it.
To remove the grilles, first remove the pads -- pull them at the edges gently, they will come off.
Then You'll see some screws. Unscrew.
The headphone cups can then be removed from the gynbals,at which point you can remove the grills as well.
It's been a while since I've done it, hope I didn't forget a step.