What is the difference between stage sound column sound and traditional sound? What are the characteristics of sound column sound

August 15, 2022

The sound column speaker refers to a columnar sound box formed by arranging and combining multiple speakers and connecting them in phase. Compared with traditional speakers, it has stronger sound directivity, smaller appearance and small footprint, which is more in line with the concise style of modern decoration. Generally common in home theaters, conference halls, shopping malls, gymnasiums, bars, restaurants, schools and other places.

The characteristics of stage sound column sound

Feature 1: Strong vertical directivity

The sound column speaker can be said to be a professional line array audio system that has been miniaturized and portable. The directivity of the sound column is similar to that of a single speaker in the horizontal direction, but is greatly improved in the vertical direction. It propagates in a wave mode in the horizontal direction, but has a strong directivity in the vertical direction, forming a "plate"-shaped three-dimensional radiation effect.

Install the sound column near the entrance of the stage, and point the "sound plate" to the audience. The sound beam radiates to the back row of the auditorium with strong sound energy, and the front row is affected by the phase difference caused by the different vertical distance of the speakers. Attenuation, the sound pressure may be lower than that of a single speaker, which makes the direct sound distribution of the sound field tend to be uniform. The horizontal direction of the sound column should not be "clustered", and there should be a large horizontal radiation angle, so that the sound field can be relatively uniform in the left and right directions.

Column-type speakers usually refer to 4 to 10 paper cone speakers arranged in a straight line. The characteristic is that when transmitting the sound in the horizontal direction, the radiation angle of the speaker is the same as the radiation angle of a speaker, and when transmitting the sound in the vertical direction, the radiation angle of the speaker increases with the combination of the speakers, especially when the high-frequency sound is used. , the sound beam can be sent out in a certain direction.

Column-type speakers are quite effective in controlling the sound vertically. In environments with severe reverberation, column speakers can effectively concentrate the sound to the audience and reduce the occurrence of rebound after reaching the wall.

The characteristic of the sound column is that it has a strong directivity in the vertical direction. The longer the sound column, the narrower the sound beam, the more concentrated the energy, and the stronger the directivity. When the length of the sound column is fixed, the higher the frequency, the narrower the sound beam and the stronger the directivity.

Feature 2: High sensitivity and long sound radiation distance

The sound column can be formed into a variety of specifications according to different structures. The smaller the "sound disk" area, the stronger the beam-forming effect and the sharper the directivity, and the sensitivity on the axis is much higher than that of a single speaker. The sound axis efficiency of the sound column on the main shaft is higher than that of a single speaker. Generally speaking, the greater the number of speakers that make up the sound column, the higher the sensitivity on the main axis and the farther the sound radiates. Reasonable control of the suspension height and depression angle of the sound column can make the sound field more uniform and clear. Because the total rated power of the sound column is several times that of a single speaker, and at the same time, due to the focusing effect in the direction of the sound axis, the sensitivity is doubled, which is more effective for long-distance sound reinforcement.

Compared with a single speaker, the low frequency radiation efficiency of the sound column is greatly improved, thereby increasing the low frequency response and enriching the sound. Using the directional characteristics of the sound column, placing the microphone outside the main sound beam (that is, the upper and lower directions of both ends of the sound column emit the lightest sound), where the sound pressure is the weakest, can improve the whistling phenomenon and improve the sound transmission gain. In places with long reverberation time, the use of sound columns can greatly improve the clarity of the sound. Active Column Speaker

Feature 3: Small and beautiful, does not occupy a lot of space

Compared with traditional speakers, the shape of the sound column is smaller, and it is mostly used in some occasions that have special requirements for audio equipment, such as conference halls and studios that need to hide audio, and need to cooperate with indoor beautiful program recording sites, home theaters, and so on. Due to the small size of the sound column, it is easy to integrate with the environment, and it is generally suitable for customers who like simple style.

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Ms. Silvia

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