We all know that the sound signal is to transform the waveform of musical sound waves into electrical signals, so as long as the waveform of the signal is also pushed by the air, the sound can be produced.
The commercial audio speakers includes several parts: the horn unit, dividing network and the loudspeaker
The horn unit: In order to achieve the same effect as the loud horn speaker, the coil on the voice coil in the magnetic system input with the electrical signal, and the coil will change magnetically with the signal, and drive the voice coil to move in the sound waveform in the magnetic system. The voice coil then pushes the vibration or sound cone of the horn to push the air to produce sound waves, and the sound is emitted in this way.
The dividing network: configuring different voice ranges to different units with different characteristics, such as the low frequency range
(below 300Hz) for the bass unit, the medium frequency range (300hz-2500hz) for the alto unit, and the high frequency range (above 2500Hz) for the treble unit to sound separately to form a complete range. The most popular way of frequency division is to use the passive dividing network to separate the signals of the amplifier into different sound paths with different frequency ranges.
The loudspeaker: further processing with the "back wave" emitted from the rear of the unit. Generally speaking, each single unit will have its separate space to process the back wave. If the volume of the medium and high pitch unit is small, the sealed back cavity will be set up for pretreatment when the unit leaves the factory. At present, there are two main design methods of commercial audio speakers: closed and open