Jackson found the sound system and turned it on.
Among the changes of the sound system in New Persian, as contrasted with earlier periods, especially with Old Persian, the first that claims mention is the change of the tenues k, t, p, c, into g, d, b, 1.
Every pitch had floodlights, in addition there was a sound system that had a reach to all the pitches.
Announcements about this or anything else over the pathetic sound system were completely inaudible.
Due to a problem with the sound system my voice may sound a little jittery.