Originally Posted by Optical Lens
What do those bigass studios do? Do they just leave everything on overnight, or do they switch everything on and off every day?
They have real machine rooms with real HVAC systems, large vents, quiet fans, and everything else needed to isolate and cool rack gear. A lot of high end units had remotes and the ones that did need to be in the control room are in iso cases with lots of cooling inside/behind it.
Effects units are only half the problem. The large analog consoles often had multiple power supplies that ran hot and ate a ton of electricity.
They tend to leave it on most of the time. There's a thread somewhere in High End about switching off large consoles and why people tend not to do that.
edit - found a link for you: SSL 4000