Various classifications of professional audio.Bar speaker sales

　　Speakers can be seen everywhere in our lives. Looking at their appearance, it seems that there is no other difference except for the size. In fact, it is not the case, the difference between them is big, the following is the classification of professional audio from various aspects:

　　1. According to the occasion of use: divided into two categories: professional speakers and home speakers. Household speakers are generally used for home playback. They are characterized by fine and soft playback sound quality, more refined and beautiful appearance, not high playback sound pressure level, and relatively little power. Professional speakers are generally used in professional entertainment venues such as dance halls, karaoke, theaters, halls and stadiums. Generally, professional speakers have high sensitivity, high playback sound pressure, good power, and high power. Compared with home speakers, their sound quality is harder and their appearance is not very refined. However, the performance of monitor speakers in professional speakers is similar to that of home speakers, and their appearance is generally more exquisite and compact, so this type of monitor speakers are often used in home HI-FI audio systems.

　　2. According to the audio frequency: can be divided into full-band speakers, bass speakers and subwoofer speakers. The so-called full-band speakers refer to speakers that can cover the low, mid and high frequency ranges. The lower limit frequency of the full-band speaker is generally 30Hz-60Hz, and the upper limit frequency is 15KHz-20KHz. In general small and medium-sized audio systems, only one or two pairs of full-band speakers can be used to fully take on 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 audio systems to enhance the strength and shock of low-frequency playback. When in use, after frequency division by an electronic crossover (crossover), the low frequency signal is sent to a special bass power amplifier, and then the bass or subwoofer speakers are promoted.

　　3. Divided by purpose: generally can be divided into main playback speakers, monitor speakers and return speakers. The main sound box is generally used as the main sound box of the sound system to undertake the main sound reproduction task. The performance of the main playback speaker has a great impact on the playback quality of the entire audio system, and a full-band speaker plus a subwoofer speaker can also be used for combined playback. Monitor speakers are used for program monitoring in control rooms and recording studios. They have the characteristics of small distortion, wide and flat frequency response, and little modification of the signal, so they can most truly reproduce the original appearance of the program. Back-to-listening speakers, also known as stage monitor speakers, are generally used on stages or dance halls for actors or band members to monitor their singing or performance. This is because they are located behind the main sound box on the stage and cannot hear their own voice or the band's performance clearly, so they can't cooperate well or can't find out the feeling, which seriously affects the performance. Generally speaking, the return-to-listening speaker is made of a bevel and placed on the ground, so that it can be placed on the stage without affecting the overall shape of the stage, and it can be heard clearly when the sound is played, and the sound will not be fed back to the microphone. Howling.

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