Line Array Systems
Line array is designed to focus the sound into a very narrow pattern to avoid the wasted sound energy that comes from using standard speakers. Line array speakers are constructed of identical loudspeaker units mounted in a row and fed in-phase to create a singular sound source.
Used vertically, line array and mini line array speakers give a narrow and defined vertical output with a wide horizontal spread, which is perfect at getting the sound across the audience rather than up into the ceiling or the open air.
When height or lack of fly rigging doesn't permit the line array to be suspended, they will typically be stacked on top of subwoofer units or on the stage itself using a custom framework.