Loudspeaker

Details Loudspeaker Loudspeaker

1977-03-28

1978-07-18

Hix, L. T.

Acoustics

Diaphragm

With damping means

181167, G10K 1300

Patent

active

041009924

ABSTRACT:
A loudspeaker including a porous diaphragm having an outside edge, an electromagnetic drive means mounted on a central area of the diaphragm for displacing the diaphragm and a hard ring forming a junction between the diaphragm and the drive means with the diaphragm being totally permeated with a stiffening material in the area between the ring and the outer edge without increasing the thickness of the diaphragm thereby improving the acoustic characteristics of the loudspeaker as compared with an equivalent unstiffened diaphragm.

REFERENCES:
patent: RE24141 (1956-04-01), Brennan
patent: 1459803 (1923-06-01), Steurer
patent: 2124834 (1938-07-01), Stenger
patent: 2302178 (1942-11-01), Brennan
patent: 2408038 (1946-09-01), Brennan
patent: 2502853 (1950-04-01), Keddie
patent: 2716462 (1955-08-01), Brennan

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