Hacked Gadgets Forum

March 18, 2014

Piezoelectric Crystal Speaker Build

at 9:31 pm. Filed under Cool Gadgets


If you are into high end audio this project is probably not for you. If you are into tinkering with electronics then dig in. RimstarOrg shows us how to build a Piezoelectric Crystal Speaker. He took a Rochelle Salt Crystal that he made and electrically connected to it using some tinfoil, once rubber banded to a tin can for amplification the speaker was complete. When an alternating voltage is applied to the crystal it will resonate, only problem is that the standard output from his clock radio was not enough to make it loud enough. A transformer wired to amplify the input voltage was used to increase the volume. He then shows some experiments that demonstrate various methods of amplifying the sound using things such as cones.


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4 Responses to “Piezoelectric Crystal Speaker Build”

  1. Piezoelectric Crystal Speaker for Clock Radio Is Alarmingly Easy to Make Says:

    […] [via Dangerous Prototypes and Hacked Gadgets] […]

  2. Piezoelectric Crystal Speaker for Clock Radio Is Alarmingly Easy to Make | Hack The Planet Says:

    […] [via Dangerous Prototypes and Hacked Gadgets] […]

  3. StevenD Says:

    Thanks for posting this Alan. It was a lot of fun to do. I did a follow-up when someone suggested trying it with a window pane as the diaphragm and the sound was a lot louder. You can hear it in the follow-up video here http://youtu.be/b4vr1aE0zzw

  4. Alan Parekh Says:

    Hey Steven,

    The window speaker version works great! Thanks for sending in the link.

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