In 35mm and 70mm projection from release prints with magnetic sound, one or two of these tracks is amplified through speakers mounted at the sides, rear or on the ceiling of the auditorium in order to produce surround-sound.
In 35mm and 70mm projection from release prints with magnetic sound, one or two of these tracks is amplified through speakers mounted at the sides, rear or on the ceiling of the auditorium in order to produce surround-sound.