My next Culprit is going to be beefing up the roof for sure..MLV..I never thought to use any of that:yumyum:Ya back wall was really noisy and weak, I actually have the body seams cracking apart there //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif last build but I put three layers deadner and thought it was good and mounted the ct 7k to it lol it wasnt ha ha vibrated that amp till it caught fire. This time i made a sheer wall of 1 1/2 plywood over the deadner and carpeted it and going to add a sheet of MLV over it before I put box back in.