<p>A speaker comprising: an edge member which includes a plurality of peripheral pieces and a plurality of connecting portions for connecting neighboring ones of the pieces; the neighboring ones of the pieces having cross-sectional shapes symmetric with respect to each other in an axial direction of the edge member, while each of the connecting portions has a cross-sectional shape changing gradually continuously; a diaphragm which is secured to an inner periphery or an outer periphery of the edge member; and a frame which is secured to an outer periphery or an inner periphery of the edge member. <IMAGE></p>
