The empty cabs I saw also when I worked stage security for them one show. Johnny had 3 Marshall heads I think one or even two were just backups) and 2 cabs...the other cabs were basically tables...

BUTTTTTTTTTTTTTT

He was without a DOUBT...the loudest guitar player I ever heard....I had ringing in my ears for 2 days...the worst case I ever had. He basically was the reason I got Ear protectors (those things with the baffles in them) when they returned in the Spring...

Between the Marshall and the PA...it was loud