A speaker is a device that converts audio signals into sound.
A speaker is a device that converts audio signals into sound. In general, it means that the main body of the speaker or subwoofer has its own power amplifier, which amplifies the audio signal and the speaker would play back the sound, and the sound is bigger.
The speaker is the terminal of the whole sound system. Its function is to convert audio energy into corresponding sound energy and radiate it into space. It is an extremely important part of the sound system, which is responsible for the task of converting electrical signals into acoustic signals for people's ears to hear directly.
In order to make a speaker, the following materials are needed.
1.power amplifier board
2.2.75 inch, 10 W loudspeaker
3.1.0mm varnished wire
4.Digital power amplifier chip TPA3116D2
5.10 μH inductance coil
8.Filter of more than 100 μH
I have imagined what a speaker I waned and what functions I wanted it to have, and then I have chosen the materials above. The chip TPA3116D2 was bought from this website: http://www.apogeeweb.net/article/801.html