I did this mod with my LSA HP-2 headphones. You need 10mm felt protectors from the discount store. The ones at home building stores are not fluffy enough (they are felt but too smooth). These are what you want, don't go any bigger in size.
Headphone Reviews and Discussion - Head-Fi.org
EternityInParis
John Massaria
Did u remove bass carpet? Oh on lsa it’s a fixed cover on back so u can not make adjustments on bass the way I did- but you may be able to increase bass by playing around with Back cover
