so, i use my peavey t-max head run into a 4ohm avatar b210 and a peavey black widow 18" (not sure of the impediance). the amp is fine as it is supposed to be able to handle impediances as low as 2ohms. my peavey millennium has 18 volt electronics. i feal that i am not getting the supposed "500 watts" that i am supposed to get with a 2 ohm load. i have my preamp gain set below clipping and i can only turn my overall volume (power amp) up to a little below 2 (out of 10) before the DDT on the amp starts kicking in. what is goig on here? is there a problem with my amp or is something not turned on that should be or are my 18 volt electronics just too hot for my amp?