I got a sweet deal on a head and its sitting in my jam room as i speak. Unfortunately, i dont know what to do about a cab. It has 2 output jacks on the back, and is capable of pushing 240 watts @ 4 ohms into 1 cab or 150 watts @ 8 ohms into 2 cabs. I'm new to this, since ive been a combo playing guy so I have a few questions. I wanted to have a full stack of probably a 1x15 cab and a 2x10 cab on top, running 8 ohms each. I don't have the money for the whole thing, just the 1x15 for now. Its a yorkville 1x15 extension cabinet, but it has 2 speaker inputs on the back. If i were to run 1 cable from the head to the cab, would i be running at 4 or 8 ohms? am i supposed to run 2 cables to the cab? Also i want to know if this applies to all cabs, also if i were to run a 4x10 4 ohm cab. Thanks alot, sorry for the lengthly question.