# Sixth Lichuang Electric Competition #TPA3130 Class D amplifier

Because the shell was not calculated well, there is a slight deviation in the placement of the board and the hole position. The new shell has been drawn and proofed. Since it is about to be submitted, I can only forcibly assemble it for demonstration. In the video, the wire of the left speaker fell off. , the sound quality is a bit stiff, but under normal circumstances it's pretty good (although Class D amplifiers are like that).

At the beginning, I originally planned to use the 3116. After thinking about it, I didn’t have such a high-power power supply and speakers, so I chose the 3130. It would be good if an ordinary power supply can support the basic power. The speaker will definitely be replaced with a 15w speaker in the future. This speaker only has 3w, which is far from enough. The sound is obviously broken after the volume is adjusted high!

Moreover, the level light was not added due to the calculation problem of the casing. There is still a circuit on the motherboard. Just add a board and it will be done. I have already proofed it and will re-perfect the project homepage after the splicing is completed.