I need a littile guidance/opinions. i got a Fender Bassman 250 that runs 250 watts @ 4ohms. i also purchased a Fender 400 pro that runs 350 watts @ 4ohms and 500watts @ 2ohms. i had the atleast in theory idea, that i can run them together. since the bassman cab is a 4ohm cab, i'd thought id plug it into the 400 pro head...4ohm cab + 4ohm cab= 2ohm 500watt stack right? In theory its correct. Am i the first to figure this? P.S. the Rumble 350 has nothing on the 400 pro, i promise.