@StradivariusBone You're recalling memories and making me giggle:
First memory board I met.
Hamilton, Ontario, Canada, 1973, Hamilton Place Great
Hall.
Strand Century
system IDM-Q,
Instant
Dimmer
Memory-
Cue.
2 full height 44 RU 23" wide racks. [Predecessors to 19" racks]
Lots of
power supplies. LOTS AND LOTS of PC cards.
Drum memory. Lots of heat and lots of
noise.
Had to keep the booth windows closed in an attempt to
shield the patrons from the banshee whining of the memory drum.
Booth was too hot for the equipment let alone the operators.
City of Hamilton, the owners, demanded something be done.
General contractor x-ray'd the concrete floor slab beneath one of the two racks and carefully selected a "safe" location to push a 10" diameter core
bit up from a basement corridor.
The carefully chosen "safe" location nailed three conduits bang on.
The General Manager, George MacPherson, kept the core, resplendent with its 3 piercings, for his personal office door stop.
Once they'd core drilled their hole, an air conditioner was installed in a basement corridor with it's cool output routed up via a duct into the bottom of the rack. Next problem was condensation with the comparatively cold air hitting the electronics. The IDM-Cue, as originally installed, was capable of storing 800 cues for 80 channels initially installed with rack space and powering to expand to 100 channels, which occurred a few years later.
Two tall racks, all that noise and all that heat.
Decades later, you could get all of that capability and more in an 11 pound board that'd fit under your arm.
Times have changed and then there's the X-32 but that's another thread.
Toodleoo!
Ron Hebbard.