Patent ID: 8879776

Claim:
A speaker comprising: a diaphragm which is cylindrical and has closed ends; an edge which supports the diaphragm in a manner which allows the diaphragm to vibrate in a vibrating direction; a voice coil bobbin around which a voice coil is wound and which is connected to the diaphragm; and a magnetic circuit for driving the voice coil, wherein the diaphragm has a circular cross-sectional shape in a short direction, wherein the diaphragm is formed to include a first diaphragm and a second diaphragm, wherein the first diaphragm includes: a first circular arc portion having a first semicircular cross-sectional shape in the short direction; and a first flange protruding outward from both ends of the first circular arc portion in a radial direction, wherein the second diaphragm includes: a second circular arc portion having a second semicircular cross-sectional shape in the short direction; and a second flange protruding outward from both ends of the second circular arc portion in a radial direction, and wherein the first flange of the first diaphragm and the second flange of the second diaphragm are connected to each other.