Interesting. What was your thought process when choosing between the thicker pleather screen vs the more transparent velour one for the J$ pads? I would have thought the more the transparent the better regardless but I haven't heard the J$ pads as I haven't received them yet. Do they have a huge treble spike that you are trying to cut down with the thicker nylon?
Yep, my HE500s sound a bit too bright with velours / velour nylon screen / no screen, but just right with the thicker nylon from pleathers.
A similar effect with HE400 I think, for those who complain about its tizzy treble.