The term "Line Array​" is used to describe a loudspeaker system that has multiple loudspeaker units with the same characteristics arranged vertically to simulate a linear sound source. Sound propagating from line array speakers has very little dispersion in the vertical plane compared to standard loudspeakers operating as points, sources where the sound travels with wide dispersion angles in the horizontal and vertical planes. Therefore, the attenuation of sound pressure with distance is small.

Gain is one of the main indicators of the power amplifier. It is the product of the direction coefficient and efficiency, and it is the performance of the antenna radiation or the size of the received electric wave. The choice of gain size depends on the requirements of the system design for the radio wave coverage area. Simply put, under the same conditions, the higher the gain, the farther the radio wave propagation distance will be. The larger the receiving gain value of the power amplifier, the stronger the receiving performance.

With the development of the economic and cultural level and the rapid growth of people's spiritual life needs, the performance market is very active. Various indoor concerts, theater performances, outdoor concerts, and large-scale TV variety shows are welcomed by the masses.

Professional Amplifiers​ In terms of their main use, power amplifiers can be divided into two main categories, namely dedicated power amplifiers and civilian power amplifiers. Power amplifiers used in stadiums, movie theaters, dance halls, conference halls, sound reinforcement in public places, and recording monitors generally have some unique requirements on their technical parameters. a power amplifier or professional power amplifier.

One aspect of what makes the Line Array system so efficient is the shape of the dispersion sound. Point source (non-linear Line Array) speakers project sound in a spherical shape, radiating in all directions from the speaker. But your audience usually doesn't surround the speaker from all directions, the audience is usually more or less in front of the speaker.

Strictly speaking, the power index of the power amplifier is divided into the nominal output power and the maximum instantaneous output power. The former is the rated output power, which can be interpreted as the maximum output power when the harmonic distortion changes within the standard range and can work safely for a long time. The latter refers to the "peak" output power of the power amplifier, which is interpreted as the maximum output power that the power amplifier can withstand instantaneously under the premise of ensuring that the signal is not damaged when the power amplifier accepts an electrical signal input.