rsh_bassist

I just wondered if anybody would be good enugh to answer me this. Im currently playing though an ampeg BA 500 combo with an ashdown deep 2x10 cb as an extention. By itself the ampeg puts out 350 watts, but i just wondered what im going to be putting out with the ashdown cab. Its an 8 ohm cab. Will it still be 350, or will it ioncrease at all? Please help, im really quite confused........ Tom.