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Classification of speakers in professional audio systems
At present, the level of program signal source equipment and power amplifiers has been made very high, so the key to an audio system composed of high-quality sound sources, high-quality amplifiers, and speaker systems lies in speakers. It is an extremely important link in the entire sound system and has a great impact on the entire sound system.
Speakers have different uses in different situations. The common classification in professional audio is as follows:
Divided by audio frequency: divided into full-range speakers and subwoofers
The so-called full-band speaker refers to the sound that can cover the low-frequency, intermediate-frequency and high-frequency ranges. The lower limit frequency of a full-band speaker is generally 30Hz-60Hz, and the upper limit frequency is 15KHz-20KHz. In ordinary small and medium-sized audio systems, only one or two full-range speakers can be used to complete the playback task.
The subwoofer is generally a special speaker used to supplement the low-frequency and ultra-low-frequency playback of full-range speakers. This type of speaker is generally used in large and medium-sized audio systems to enhance the strength and shock of low-frequency playback. When used, most of them are divided by an electronic crossover (crossover), and then the low-frequency signal is sent to a dedicated bass amplifier (such as FP14000, FP20000Q, FP22000Q), and then the subwoofer is promoted.
Divided by the occasion of use: divided into professional speakers and home speakers
Home speakers are generally used for home playback, which is characterized by delicate and sound playback quality, a more exquisite appearance, a beautiful appearance, low sound pressure level, and relatively little power.
Professional speakers are generally used in professional entertainment venues such as song and dance halls, karaoke halls, theaters, auditoriums, and stadiums. Professional speakers have high sensitivity, high sound pressure, good strength, and high power. Compared with home speakers, their sound quality is harder and their appearance is not very delicate. The performance of monitor speakers in professional speakers is close to that of home speakers, and their appearance is generally more refined and compact. Therefore, these monitor speakers are often used in home Hi-Fi audio systems.
Divided by purpose: into main speakers, monitor speakers, and return speakers, etc.
The main speaker is generally used as the main speaker of the audio system and undertakes the main playback task. The performance of the main speaker has a great impact on the playback quality of the entire audio system. You can also use a full-band speaker plus a subwoofer for combined playback.
Monitoring speakers are used in the control room and recording studio for program monitoring. It has the characteristics of low distortion, wide frequency response and flatness, and few modifications to the signal. Therefore, it can best reproduce the original appearance of the program.
Return speakers are also called stage monitor speakers. They are usually used on the stage or in the dance hall for actors or band members to monitor their singing or performance. This is because they are located behind the main speaker on the stage and cannot hear their own voice or the performance of the band, so they can not cooperate well or find the feeling, which seriously affects the performance. Generally, the return speaker is made into a bevel shape and placed on the ground, so that it can be placed on the stage without affecting the overall shape of the stage, and can make people on the stage hear clearly during playback, without causing sound feedback to the microphone. Howling.