Line Array Explanation and Different Line Arrays

Actual sound reinforcement occasions include many large halls, venues, outdoor open-air stages, etc., and the live environment and audience positions are different. This needs to be applied to the acoustic characteristics of Line Arrays of different shapes. Including straight line sound sources, arc sound sources, J-type sound sources, progressive sound sources, etc.

Here is the content list:

• What is a line array?

• Different array

What is a line array?

A Line Array is a loudspeaker system that consists of many, often identical, loudspeaker elements. These loudspeaker elements are mounted in-line and fed in-phase to create near-line sound sources. Adjacent drivers are placed close enough together that they interfere constructively with each other, sending sound waves farther than conventional horn-loaded speakers, with a more evenly distributed sound output pattern.

Line Arrays can be oriented in any direction, but their primary use in public addresses is for vertical arrays. It offers a very narrow vertical output pattern that helps focus the sound on the audience without wasting output energy on the ceiling or in the space above the audience. Vertical line arrays display a generally wider horizontal pattern and can be used to provide sound for the majority of the audience at a concert. In contrast, horizontal line arrays have very narrow horizontal output patterns and tall vertical patterns. An array of subwoofers along the front edge of a concert stage can behave as a horizontal line array unless the signal (delay, polarization, equalization) fed to them is adjusted to form another pattern.

Different array

Correspondingly, Line Array can be flexibly combined into straight lines, arcs, and various combined shapes. The environmental factors of the sound reinforcement occasions are different, which requires different directional sound sources to meet different field and sound field characteristics. In typical sound reinforcement occasions, several combinations of linear arrays, arc arrays, J-arrays, and progressive arrays are very useful.

The linear sound source has good focusing performance and is suitable for long-distance projection; while the arc sound source coverage angle does not narrow sharply with the increase of frequency, so it is suitable for covering the audience area close to the stage; J-type sound source and progressive sound source As a combination of straight line and arc sound sources, it has both the advantages of the two sound sources and realizes both long-distance projection and short-distance coverage. Therefore, the line array speaker system formed according to the shape of these two sound sources is Widely used in sound reinforcement occasions.

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