I am experiencing the same thing also with my 4.1. I can cook eggs on the back panel of my sub. I have the v2 400 and it doesn't act this way. I just received the 4.1 just yesterday, used it for a few hours and then the next day it transform into a frying pan. At first, sound coming from them was music to my ears, then I hear cracking noise like the material that the mids were made of wanted to rip apart. Houston we have a problem:-( I will definitely contact Amy about this.