I think this is a fantastic mod!!!
-I have tried the RadioShack pads with a hole cut out of the middle.
-I've tried the sock mod.
-I previously settled on the bowl pads with the radioshack pads underneath. The shack pads added to the comfort of the phones, and the sound was decent.
I bought the Senn 19545 pads, but wasn't sure what to do with them - I wasn't sure if I wanted to cut a hole in them... until I saw this post.
This is the best the phones have sounded! The pads have a good density, but are soft. (The Radioshack pads are very thin and flimsy and the stock bowl pads are pretty rough). This mod is very comfortable, and the sound is great. The pads obviously rest directly against the ears, but the hole in the middle creates a wonderful pocket. I believe this accomplishes better what the bowl pads set out to do. This "sonic" pocket has opened up the sound of the phones. The bass is deeper, the soundstage wider, and the music carries more impact. In addition, the clarity of the music is maintained since there is nothing covering up the drivers except the original mesh screen.
To me it's made as much difference with the Grados as finding a good seal made with the Etys. This mod has brought out the most complete sound I've heard from my 80s.
Thanks Dave for posting these pictures to help me do the mod correctly!!
-Tim