I am thinking of going to a power amp set up. I currently have two 8 ohm cabs. Two questions: 1) I assume that bridging into 4 ohms, the wattage would be split equally to each cab (as it is from a mono amp) is this true? and 2) How hot does an amp like a QSC run bridged into 4ohm? And is it safe for constant use or only once in awhile? I know my mono amp really "cooks" when I run it at 2 ohms.