okay...i just got an Ampeg SVT 410hlf, which is 4ohms. My crate bx100 is also 4 ohms. the manual for the crate said that external cabs will be hooked up serial with the internal speaker. basically this i what i wanna know: 1) will this cause problems? 2) how much power will go to the cab? 3) will anything get screwed up if i disconnect the internal speaker? basically, i wanna know how i can get all 100 watts going to the cab and none to the internal. thanks.