I'm taking possesion of one tomorrow--a '73 in execellent condition with original 7442s and wiring harness. It looks like none of the solder joints have ever been touched. This one is 29" wide, but I see one on eBay with a small box 50 watt head and they are the same width, 26". What differences were there between these cabs in their various incarnations? Anybody know? I realize they're kind of rare and not as well known as 4x12s, but hopefully some of you are familiar with them. If so how do you like them compared to the various vintage 4x12S?