What are the types of speakers in professional audio
At present, the level of program signal source equipment and power amplifier has been made very high, so the sound quality of a sound system composed of high-quality sound source, high-quality amplifier and speaker system depends mainly on the speaker. The speaker is also called the speaker system, it is an extremely important link in the sound system. Because the sound quality of the speaker has a great impact on the entire sound system
First, the type of speaker
There are many classification methods for speakers, and the common classifications in professional audio are as follows:
1. According to the occasion of use: it is divided into two categories: professional speakers and home speakers. Household speakers are generally used for home playback. They are characterized by delicate and soft playback quality, exquisite appearance, beautiful appearance, low sound pressure level, and relatively little power. Professional speakers are generally used in professional entertainment venues such as dance halls, karaoke halls, theaters, auditoriums and stadiums. General professional speakers have high sensitivity, high sound pressure, good strength, and high power. Compared with home speakers, their sound quality is hard and the appearance is not very delicate. However, the performance of monitor speakers in professional speakers is close to that of home speakers, and their appearance is generally more exquisite and compact, so this type of monitor speakers are also often used by home Hi-Fi audio systems.
2. According to the audio frequency: it can be divided into full-band speakers` bass speakers and subwoofer speakers. The so-called full-band speaker refers to the sound that can cover the low frequency` intermediate frequency and high frequency range. The lower limit frequency of full-band speakers is generally 30Hz-60Hz, and the upper limit frequency is 15KHz-20KHz. In a general small and medium-sized audio system, only one pair or two pairs of full-band speakers can be fully responsible for the playback task. Bass speakers and subwoofers are generally dedicated speakers used to supplement the low-frequency and ultra-low-frequency playback of full-band speakers. This type of speaker is generally used in large and medium-sized sound systems to enhance the strength and shock of low-frequency playback. When in use, most of them are divided by an electronic crossover (crossover), and the low frequency signal is sent to a special bass amplifier, and then the bass or subwoofer speakers are pushed.
3. Divided by use: generally can be divided into main speakers. Monitor speakers and back listening speakers, etc. The main speaker is generally used as the main speaker of the sound system, and is responsible for the main playback tasks. The performance of the main speaker has a great influence on the sound quality of the entire sound system. You can also use a full-band speaker plus a subwoofer to perform a combined sound.
The monitor speakers are used for program monitoring in the control room and the recording room. It has the characteristics of low distortion, wide and straight frequency response, and few modifications to the signal. Therefore, it can best reproduce the original appearance of the program. Back listening speakers, also known as stage monitor speakers, are generally used on stage or dance halls for actors or band members to monitor their singing or performance sounds. This is because they are located behind the main speakers on the stage, they can not hear their own sound or the sound of the band playing, so they can not cooperate well or find the feeling is inaccurate, which seriously affects the performance of the performance. Generally, the listening speakers are made into a bevel shape and placed on the ground, so that they can be placed on the stage without affecting the overall shape of the stage, and can be clearly heard by the people on the stage when playing, or caused by feedback of the sound to the microphone Howling.
4. According to the cabinet structure: it can be divided into sealed speaker, inverted speaker, labyrinth speaker, sonic tube speaker and multi-cavity resonant speaker. Among them, the most used in professional speakers are inverted speakers, which are characterized by wide frequency response, high efficiency and large sound pressure, which are in line with the type of professional audio system speakers, but because of their low efficiency, they are less in professional speakers. Application, mainly used in home speakers, only a few monitor speakers adopt closed box structure. The sealed sound box has the advantages of simple design and debugging, wide frequency response and good low-frequency transient characteristics, but it has higher requirements for the dialer unit. At present, in all kinds of speakers, inverting speakers and sealed speakers account for most of the proportion, other types of speakers have many structural forms, but the proportion is very small.
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