Carl Bugeja-
PCB Speaker Testing
09/20/2018 at 21:39 • 0 commentsThis video shows how i build the PCB speaker and the test results.
In this video I have also tested the pcb with plastic cup acting as the diaphragm. This amplified the sound even louder. I also managed to make it work with a 1.6mm rigid pcb, by attaching the magnet to the diaphragm.
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dB
09/16/2018 at 23:32 • 0 commentsTo measure how loud my PCB Speaker is I am using an spectrum analyzer app. A maximum 70db level was reached!
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Coneless Prototype 2
09/15/2018 at 14:59 • 0 commentsThis is a 3d printed version of the coneless PCB Speaker.
Full build video coming soon!
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Prototype 2 with Diaphragm
09/02/2018 at 22:57 • 0 commentsToday I have tried making the second pcb speaker prototype with a paper diaphragm. This ended up working worst that the smaller version. I guess i have put too much hotglue making the diaphragm too stiff. I also think that the paper I've used is too thick. Going to try and make a simpler version tmrw.
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First Prototype
08/30/2018 at 18:03 • 0 commentsThis is the first cone-less (the cone is actually the flex pcb itself) speaker prototype made from my flexible pcb actuator!
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so far I have only tested buzzy noises. I need to do some redesign of the amplifier to solve some clipping issues.
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How?
08/29/2018 at 18:44 • 0 commentsIf you are following my pcb actuator projects you have probably noticed that they beep when placed near a magnet. This is because I am driving them with a frequency that is in the hearing range.
It sounds like a very weak buzzer. This is because a speaker is basically made from a coil that actuates a magnet to move air.
So how, can I improve it and make it sound better to build the first speaker made from a PCB?
