Samsung Galaxy Fold4 (and others) passive stereo amplifier

Passive stereo sound amplifier for Samsung Galaxy Fold 4. Sides could be put two ways - facing upwards or downwards to your preference. Spirals are optional, could be glued in (or even tight fit) for better look. This design is parametric, so you could write a comment and i could generate the 3d files for your phone, as long as it has speakers at opposite sides in landscape mode.

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