The composition of the speaker

The speakers are composed of the two most basic parts of the speaker unit (the term is called the speaker unit) and the cabinet. In addition, most speakers use at least two or more speaker units to implement the so-called multi-channel partial tone. Amplifier, so the frequency divider is also an indispensable part of the telegraph. Of course, there may be other components in the speaker, such as sound-absorbing cotton, inverted tube, folded "labyrinth pipe", reinforced disk/reinforced partition, but these components are not indispensable for any speaker.