Speakers Overview

A speaker is a device that restores an audio signal to a sound signal. The speaker includes a box body, a speaker unit, a frequency divider, and a sound-absorbing material.

According to the sounding principle and internal structure, speakers can be divided into inverting type, closed type, flat type, horn type, labyrinth and other types, of which the most important form is sealed and reversed.

Closed speakers are speakers mounted on a closed box, which is relatively inefficient. The difference between the inverted speakers is that they are equipped with circular inverting holes on the front or rear panel. It works according to the principle of a Helmholtz resonator, with the advantages of high sensitivity, high power tolerated and wide dynamic range. Because the sound waves behind the speakers are also emitted from the phase hole, the efficiency is also higher than the closed box. And the same speaker installed in the appropriate inverting box will be 3dB higher than the low frequency sound pressure obtained in the sealed box with the same volume, which is beneficial to the performance of the low frequency part, so this is also the wide range of inverting box The important reason for the popularity.