I have reason to believe that 16 years ago a minor alteration was performed throughout the entire 8000 cubic miles of its own fabric.
10 seconds sound clip from the Forbidden Planet (1956) movie soundboard.
You can hear this line at 01:02:38 in the Blu-ray version of the movie.
Quote context
[...]
- And 400 other shafts like this one.
- Yes, a single machine. A cube 20 miles on each side.
- For 2000 centuries it has waited patiently here tuning and lubricating itself, replacing worn parts.
- And nearly a whole dial became active when your ship first approached from deep space.
- I'll show you a section of one of the power units.
[...]