Im looking at the 9B cab right now. My dealer has one and it sounds great. What I wonder is how loud it will go on its own with a 4-string Lakland hollowbody. Can it compare to a 2x12" in volume (I used a SWR Bigfoot before and that was enough)? The speaker surface area is about the same (if I did the math right). Im going to power it with some pre/poweramp combo so the headroom will be there. Please help!