ZWS

Loudspeakers have two terminals (two leads). When a single loudspeaker is used, the two pins do not distinguish between positive and negative polarity, and when multiple loudspeakers are used at the same time, the two pins are polarized.

The loudspeaker has a paper basin, which is usually black or white.

The shape of loudspeaker can be divided into circle, square, oval and so on.

The back of the loudspeaker paper basin is a magnet, and the external magnetic loudspeaker feels magnetism when it touches the magnet with a metal screwdriver; there is no such feeling in the internal magnetic loudspeaker, but there is a magnet inside the shell. The loudspeaker is installed on the machine panel or in the speaker.