diaphragm_tpu.stl#3DPNSpeakerCover​

a key part of the design-a flexible diaphragm that acts like a passive radior, but mounted in front of the speaker. the thickness of the flexible part has not been tested for flexibility (ideally it would be as flexible as possible) but it has been designed "on the thicker side" to help with printability#3DPNSpeakerCover​