MP3 speakers
thingiverse
Speakers which play mp3 files on a USB memory or a micro SD card. I used plywood boxes which have 95 mm inner hight and width available from so called 100 Yen shop. Speakers https://www.aliexpress.com/item/33014984342.html?spm=a2g0s.12269583.0.0.fcc87d89ma9Obk MP3 amplifier module https://www.aliexpress.com/item/33040440651.html?spm=a2g0s.12269583.0.0.2c4a2417pW0ysz Do not lose small screws and transparent part of the panel. You also need connectors, cables, screws, and a power source. I recommend to use damping materials.
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