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70mm*40mm Bass Vibration Diaphragm Speaker Passive Radiator Iron Plate Diaphragm Repair Bass Subwoofer Vibration Film DIY 2pcs - AliExpress
Ondrej Vaclavik on X: "Bluetooth speaker Onyx Mini was designed during my work for Harman Kardon brand. Line-drawing shows internal components, speaker grill with fabric, battery, buttons, passive radiators and drivers #productdesign #
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