Classification of speakers in professional sound system
At present, the level of program sources and power amplifiers has been done very high, so a sound source, high-quality amplifier and speaker system composed of sound system, the key lies in the speaker. He is the sound system is extremely important in a link, the impact of the entire sound system great.
Speakers in different occasions, different circumstances have different uses, in the professional audio in the common classification as follows:
Press the frequency to score points: divided into full-band speakers, subwoofer and subwoofer
The so-called full-band speaker is able to cover low frequency, intermediate frequency and high frequency range playback sound. The lower frequency of the full-band speaker is generally 30Hz-60Hz, the upper limit frequency is 15KHz-20KHz. In the usual small and medium-sized sound system with only one or two full-range speakers can fully assume the playback task
Bass speakers and subwoofer are generally used to supplement the full-band speakers of low-frequency and ultra-low frequency playback of the special speakers. This type of speakers are generally used in large and medium-sized sound system, to enhance the intensity of low-frequency playback and shock. When used, most of the electronic divider (crossover) after the frequency, the low-frequency signal into a dedicated bass amplifier, and then promote the bass or subwoofer.
According to the use of occasions to points: divided into professional speakers and home speakers
Home speakers are generally used for home playback, which is characterized by sound and delicate sound quality, appearance is more refined, beautiful, sound pressure level is not too high, relatively little power to bear.
Professional speakers are generally used for dance halls, karaoke halls, theaters, halls and sports venues and other professional entertainment venues.
Professional speaker of the higher sensitivity, sound pressure high, good strength, to withstand power, compared with the home speaker, the sound quality is hard, the appearance is not very delicate. Professional speakers in the monitor speakers, its performance and home speakers are closer, the appearance is generally more refined, small, so this monitor speakers are often used by home Hi-Fi sound system.
According to the use of points: divided into the main playback speakers, monitor speakers and listen to speakers and so on
The main playback speaker is generally used as the main speaker of the sound system, bear the main playback task. The performance of the main playback speaker on the sound quality of the sound system greatly affected, you can also use the whole band speaker plus subwoofer combination of playback.
Monitor the speaker for the control room, the recording studio for monitoring the use of the program, it has a small distortion, frequency wide and straight, very little modification of the characteristics of the signal, so the most true to reproduce the original appearance of the program.
Back to listen to the speaker, also known as the stage monitor speakers, generally used in the stage or dance hall for the actors or band members to listen to their singing or playing voice. This is because they are located on the stage behind the main speaker, can not listen to their own sound or the band playing sound, it can not be well with or not find the feeling, seriously affect the performance. The general back to listen to the speaker made of diagonal, on the ground, so that can not be on the stage will not affect the overall shape of the stage, but also in the playback when the people on stage to hear clearly, not to the sound back to the microphone caused by Whistle.
According to the box structure to points: divided into sealed speakers, inverted speakers, labyrinth speakers, sound tube speaker and multi-cavity resonant speakers, etc.
In these several of the most used is the inverted-type speakers, because it is specific frequency wide, high efficiency, sound pressure, in line with professional audio system speaker type, sealed speakers with the design of simple debugging, frequency Sound wide, low frequency transient characteristics such as the advantages, but the higher requirements of the trellis unit.