[ZangetsuWielder]

 
First off, pardon the dust as I was meaning to clean before I took this picture.
 
Hi, my name is Andre Clarke, long time viewer of Head-Fi.org, first time poster.
 
These are my new pair of Sennheiser HD 515's, and I wondering if I could make a modification to them.
 
I've noticed that a lot of people are saying that inside of the either 555's or the 595's there is a piece of either soft padding or rubber foam on the mesh portion of the ear cup.
 
When I first received these cans I started to proceed with my ritual of all new over the ear headphones by taking them apart, quality checking, and tightening all of the screws. I noticed that these pair of 515's didn't have either of the foam or rubber padding.
 
So, I was wondering if by placing some form of blocking material around the mesh portion of the ear cup, would it improve the bass quality? Overall, I really love these set of cans, the highs are crisp and profound, the mids are definitive, especially since I record guitar and I know exactly how my tone sounds and for these to reproduce that sound perfectly is incredible.
 
I just want to "boost" the lows and bass to say the least.
 
Thoughts?