sorry i havn,t got back earlier. the razor treatment i did was 1/2 so far. i,ve been listening to these mmgs for 2 years trying many tweaks such as getting them off the floor and building a brace to make them more stable. this was fun to do but no wow factor. then i applied the dynamat to the front of the speaker and in very thin strips to the rear. all i can say is i would recommend this to those brave or crazy enough to void their warranty. i.ll give one example. i,ve been listening to alejandro escovedo.s new cd Street Songs of Love and in the song bruce springsteen adds a vocal solo. with the razor treatment i just listened and now realize that he is singing harmonies too. when people write about congested details my mmg.s are now much improved. i understand the reluctance to tear into 2000 dollar new speakers. mine were 599 but the sound is very much improved with this modification.