[FredFS456]

I bought one just this week because of this. They really went above and beyond:

- mechanical CAD, schematic and PCB files: https://docs.teufel.de/download/MYND/Open_Source_Hardware_Fi...

- firmware: https://github.com/teufelaudio/mynd-firmware

- Bluetooth API documentation: https://cdn.teufelaudio.com/image/upload/v1748589486/product...

- battery repair/replacement guide: https://cdn.teufelaudio.com/products/MYND/pdf/Teufel_MYND_RM...

I believe that they designed the mechanical parts to be 3D-printable as well.

[gaudystead]

This is really cool! I'd be curious if one could 3D print different resonance chambers to get different desired sounds from the speaker.

[FredFS456]

They do have very basic EQ but for sure you have enough documentation to modify the speaker itself if you'd like.