Loudspeaker is a kind of electronic equipment, which is mainly used to reduce the spread of sound, amplify the input sound, and make the sound transmit farther.

The loudspeaker is mainly composed of iron, paper, magnet and copper wire. Its working principle is to produce electromagnetic interaction with the magnet through the audio AC signal of the coil to vibrate the surrounding air to produce sound. The loudspeaker can be divided into wired loudspeaker and wireless loudspeaker.

Wired loudspeakers are mainly used for small conferences, field tourism activities, tour guides, commodity publicity, auctions, etc. They are divided into waist mounted loudspeakers and handle loudspeakers. The most basic feature of wireless amplifiers is the wireless transmission mode of sound signals. The process of transmitting sound signals through the carrier only using the medium of air to be received by the receiver is called wireless transmission of wireless amplifiers.

Use and maintenance of loudspeaker:

1. The microphone of the microphone is a relatively vulnerable part, and is also one of the most easily damaged accessories in the microphone. The microphone audio cable interface is often used. Pay more attention when plugging and unplugging the microphone cable, and do not use too much force. This can reduce the damage and poor contact of the microphone audio cable interface.

2. When using the microphone, do not forcibly pull the microphone cable, especially the connector part, which is vulnerable to damage. When using the microphone, pay attention not to move too much.

3. The loudspeakers should be stored in a damp proof and moisture-proof manner. The loudspeakers belong to small electrical appliances. If the humidity of the circuit board wires is too high, it is easy to cause oxidation, resulting in poor contact and various problems of the loudspeakers. Therefore, they should be stored in a dry place.