A speaker used in a video/sound apparatus of a television set and capable of preventing an irregular winding of a coil on a voice coil bobbin unit, stabilizing quality and enhancing the rigidity of the voice coil bobbin unit, wherein the voice coil bobbin unit (11b) of an integral unit (11) consisting of the voice coil bobbin unit and a diaphragm unit is formed in a ring shape to thereby enhance the rigidity of the voice coil bobbin unit (11b) and ensure a positive winding of the coil (11c) on the voice coil bobbin unit (11b), whereby the coil (11c) is not loosened and quality is stabilized.