During a scene in the sci-fi The Arrival of an incoming signal the sound moves around and shows these speakers fitted into the corners of the room.
Bluray, zoomed in on the camera to see what they are called but can't really find anything about these? Does anyone else know?
Zoomed on camera (ALDE AUDIO M.R. High Performance Surround System.) so are these separates for a surround system in the 1990's?