My PCB speaker is very simple and works just like any other speaker.
Its main components are the magnet and a coil, in this case, a flexible printed traces. The vibrations created from the coil pushes the surrounding air to create sound waves. I also tried adding a diaphragm to amplify the music. It also worked with a 1.6mm rigid pcb, having the magnet connected to the diaphragm.In this video, I tried to make a speaker from a PCB.
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Hackaday Project: https://hackaday.io/project/160758-pcb-speaker
Music:
https://soundcloud.com/peyruis/swing
https://soundcloud.com/johnnyrockmusic
