There was a pic from backstage at a NRPS and/or GD show where you see a Twin Reverb with two EV SRO speakers (Big white coffee-can shaped magnets). I think it was Jerry's Pedal Steel amp at the time. I can't find that pic. Anybody know where it is???
As Tigerstrat said back on 6/27/11: "This appear to be the back of one of those 4x12's we see in old shots- possibly Lead Guitar Fill for Bob's side of the stage. Looks like three EV SRO's and a JBL D120."
This link has a bunch of pictures from the event in the above picture which are pretty cool. The event was called Sound Storm and was held in Poynette, WI in April of 1970 (not far from where I am right now).
Sorry Pete, no other images of the amp/speakers other than that one, but some cool stuff none the less.
I saw that one of the 4x12 cab, but the other one I recall was specifically of a Twin Reverb amp with two EV SRO's. I think it was from a NRPS opening for the Dead show. I'll find it one of these days. Thanks, guys.