Okay so I think I am officially aborting all transplant ideas. I got in my fancy Monoprice headphones today . They are open or at least semi open with a vent on the side covered with thick felt like material.
I just kinda jury rigged one driver in one side without unsoldering them from my S500 because I was afraid of exactly what happened. I get the same harsh highs and loss of mids and lows as with the "ATH velours". I could cover the vent on the back and get a noticable improvement but it just isn't what it is with the HD25 pleather. To me something about the size of the hole on those pads just tune them perfectly in the mids department.
So I realized that I am going to go through a lot of work just to get something close (but not quite the same) to what I already had if I mess with it long enough. So mission aborted.
Its a shame too because the monoprice are super super lightweight an they flex to make the cups rest with even pressure and no leakage. The pads are almost circumaural and much more comfortable. The headband is.. well painful after a while as it is not padded but after I add the HD25 pads to it, It would have been just dreamy feeling
Anyway I'm going back to the way I had it and leaving it. Its a shame because i really like the weight of these monoprice's..
Edited by Doc-holliday - 10/1/12 at 8:41pm