Any info on this? I found myself wondering this a while back, and the thread on the Alligator timeline and tone changes during that era piqued curiosity even more. It seems like in the late 60s and most of 70 he could bottom out a twin with bass flub during particularly heavy jamming. I wonder if the 10/0 setting was a trick picked up from the pedal steel world/NRPS. Seems like it must be pretty well set by 72. So, some point late 70 early 71? Also curious if anyone remembers JG talking about this particular element of his setup?