Jerry Garcia’s McIntosh amp

Lots here: https://archive.org/post/412807/the-wall-and-how-it-was-wired

@justbgunn Great info!  Thanks for joining the discussion :)))

Did Jerry have a fancy Mac system at home for listening? You would think he would, but then heroin isn't a cheap habit.

In the early days they used 4 x MC240 in mono to run the PA. All 4 amps ( at 48# each ) bolted to a sheet of plywood 

wall of sound is much much more than big amps and speakers, it was based on the idea of line arrays for each player and a special two Mike system ( with feedback cancelling phase control ) engineered by Alembic.

I happen to agree on the early 70’s and I love Terrepin. I have a 1961 M240, which I treasure.

happy listening all !

There is a very informative wall of sound article at Vice.com