aight i have a new peavey firebass 700 head (700@2 475@4 275@8) and a used peavey tvx 4x12. things loud as hell and i love it so far. this is my first rig,a big step up from my combo, so i have some questions: the cab is rated for 4 ohms..is there a way to ensure that my cab is getting the correct amount of wattage so it doesnt get damaged or anything? and how do i know that my amp is operating at 4 ohms? also, my amp has DDT speaker protection. is anyone familiar with it and how it works? should i be concerned if the red light is coming on? i guess when the red light comes on it is compressing the signal..but when should i be concerned that its working too hard or something?