A speaker is a transducer device that converts electrical signals into acoustic signals. The performance of the speaker has a great influence on the sound quality. There are many types of speakers, which can be divided into electric type (ie moving coil type), electrostatic type (ie capacitive type), electromagnetic type (ie reed type), piezoelectric type (ie crystal type), etc. , the latter two are mostly used in rural cable broadcasting networks; according to the frequency range, they can be divided into low-frequency speakers, mid-frequency speakers, and high-frequency speakers, which are often used as combined speakers in sound boxes. Of course, there are also POE Speaker, a new product launched by our company recently.

Therefore, in the selection of speakers, it should take into account its performance indicators, such as: rated power, rated impedance, frequency effect, etc. Similarly, due to various factors, the service life of the speaker will be reduced to varying degrees, so you should pay attention to the instructions during use, and strive for people to use the speaker.