i went ahead and did dynamat at the back of driver, a 2" diameter dynamat circle on the cup, and some stuffing. the results is awesome, definitely suit my taste. the most obvious thing is that there is more mid and high, since the bass doesn't get in the way anymore. the boomy bass isn't all gone, but dramatically reduced. the reduction bass isn't so significant to kill the musicality, as songs that are bassy still has that power, just little more tighter. sometimes when i listen, i wonder if i should put a little more stuffing to reduce the bass just a little bit. probably the worst thing is something like hip hop (modern day hip hop) wouldn't work too well with the new tighter bass. also, i feel soundstage may have gotten bigger, or at least the depth has. i would have to say that the mod definitely can only improves the sound. (prepare to have a little fun with dynamat, it is a very weird thing to me. cutting and working it down was an interesting experience)