In a PA system, what does "line array" refer to?

In a PA system, "line array" refers to a configuration of loudspeakers arranged in a linear fashion to effectively project sound over significant distances. This design utilizes the principle of acoustic coupling, where the concerted effort of multiple speakers working together can produce an even sound coverage and improved sound quality across a larger area. Line arrays are particularly beneficial in venues where the audience is spread out over a long distance, such as in concert halls or large auditoriums, as they help maintain clarity and uniformity of sound for all attendees, regardless of their position in the audience.

The line array system typically consists of several loudspeakers placed in a vertical alignment, allowing for increased control over the vertical dispersion of sound. This means that sound can be directed more precisely, minimizing undesirable reflections and allowing for cleaner sound reproduction, which is crucial in live sound reinforcement applications.

The other options revolve around different aspects of audio technology. While sound equalization is vital for adjusting audio frequencies to achieve a desired sound quality, it does not define the line array. An audio mixer is used for balancing and combining multiple audio signals, but it is not related to the configuration of loudspeakers. Similarly, a sound distribution system across multiple rooms concerns broader coverage rather than the focused