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Introduction to speakers

  • Author:Cindy
  • Release Date:2022-01-04
Speaker refers to a device that can convert audio signals into sound. In layman's terms, it means that the main speaker cabinet or subwoofer cabinet is equipped with a power amplifier. After amplifying the audio signal, the speaker itself will play back the sound to make the sound louder.

Thespeaker is the terminal of the entire sound system. Its function is to convert audio energy into corresponding sound energy and radiate it to the space. It is an extremely important part of the sound system and is responsible for the task of converting electrical signals into acoustic signals for direct listening by human ears.





The composition of  speakers:
The speakers on the market come in all shapes and colors, but no matter which one is, they are composed of the two most basic parts of the speaker unit (called speaker unit in the terminology) and the cabinet. In addition, most speakers use at least two or more The speaker unit implements the so-called multi-channel sound reproduction, so the frequency divider is also an indispensable part. Of course, there may be other components in the speaker such as sound-absorbing cotton, inverted tube, folded "labyrinth pipe", ribs/reinforced partitions, but these components are not indispensable to any speaker, the most basic composition of the speaker The element has only three parts: speaker unit, cabinet and crossover.

The classification of  speakers:
The classification of speakers has different angles and standards. According to the acoustic structure of the speakers, there are airtight boxes, inverted boxes (also called low frequency reflection boxes), passive radiator speakers, and transmission line speakers. For their respective characteristics, see Related questions and answers. The inverter box is the mainstream of the current market; from the perspective of the size and placement of the speakers, there are floor-standing boxes and bookshelf boxes. The former is relatively large and is usually placed directly on the ground. Sometimes, shock-absorbing feet are also installed under the speakers. nail. Due to the large volume of the cabinet and the convenience of using larger and more woofers, the floor-to-ceiling box usually has better low frequency, higher output sound pressure level and strong power carrying capacity, so it is suitable for larger listening areas or more comprehensive requirements Occasions. The bookshelf box is small in size and usually placed on a tripod. It is characterized by flexible placement and does not take up space. However, due to the volume of the box and the limitation of the size and number of woofers, its low frequency is usually lower than that of a floor box, carrying power and output sound pressure The level is also smaller, suitable for use in a smaller listening environment; according to the narrow bandwidth of the playback, there are wideband speakers and narrowband speakers. Most speakers are designed to cover the widest possible frequency band , It is a wide-band speaker. The most common type of narrow-band speakers is the subwoofer (subwoofer) that emerged with home theaters, which is only used to restore a frequency range from ultra-low frequency to very narrow low frequency; according to whether there is a built-in power amplifier, it can be divided into passive speakers and Active speakers, the former does not have a built-in power amplifier and the latter has. At present, most home speakers are passive, but subwoofers are usually active.

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