They are
these speakers, or some speakers like them. They have them set up like this in both an inside and outside
theatre.
On the inside theatre, the speakers are on little shelves about 8 feet up the
proscenium walls, and in the outdoor theatre, they are on towers. (both pairs are upside down)
Here is a picture of the outside theatre, but I have none for the inside.
The
house speakers here are JBL SR700 series, and are not upside down.
So, in both cases, the speakers are not close to any ceilings or floors.