I've got this: http://img3.musiciansfriend.com/dbase/pics/products/1/6/8/582168.jpg Grabbed it as a quick fix, and an absolute upgrade. Now, currently I'm running an old beat to piss Ampeg 6x10 and im thinking it's being powered at 8 ohms? I'm fairly certain of that but i've been wrong before. Anyway, my signal and tone just sucks...Would an extension cab do anything to rectify this matter or would it be a better idea to just grab two different 4x10's? The whole 300 watts at 4 ohms is really this many when put sent into an 8 ohm cab thing has got me a bit confused as to what I should even be looking for. A little help would be very much appreciated!! Thanks!