Vintage Passive Smartphone Speaker – Tractrix Horn

Bring a touch of vintage elegance to your smartphone with this 3D-printable passive acoustic speaker, inspired by the classic design of an old-fashioned gramophone. The speaker requires no batteries, electronics, cables, or external power. Simply place your smartphone into the dedicated slot and let the specially designed horn amplify the sound naturally. The key feature is the Tractrix horn, a precision-curved acoustic profile designed to efficiently guide and amplify sound waves. The result i…

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