Speaker unit for headphones

Details Speaker unit for headphones Speaker unit for headphones

H - Electricity

04

R

349/72

H04R 9/06 (2006.01) H04R 5/033 (2006.01) H04R 9/02 (2006.01)

Patent

CA 1172744

ABSTRACT OF THE DISCLOSURE A speaker unit for headphones including a magnetic circuit which has a magnetic gap and including a diaphragm which is moveable to generate sound in response to energy applied to a coil wound on a bobbin which is connected to the diaphragm and mounted within the magnetic gap and including a frame for supporting the magnetic circuit and the diaphragm and a protecting means mounted at the front of the diaphragm and having projections so as to engage the diaphragm near the region where the bobbin is mounted so as to limit the maximum motion of the diaphragm and the protecting means formed with openings such that the protector prevents the bobbin from moving completely out of the magnetic gap. The invention is applicable to speaker units for open air type headphones, for example.

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