Loudspeaker device

A loudspeaker device comprising:

• a magnetic circuit that includes a yoke having a cylindrical shape with a bottom;
• a magnet;
• and a top plate;
• a voice coil body including one end portion inserted into a magnetic gap between the yoke and the top plate;
• a diaphragm connected to another end portion of the voice coil body;
• and
• a frame that holds the yoke and the diaphragm,
• wherein the frame includes a through hole that holds the yoke at a predetermined position with the yoke being inserted into the through hole,
• the yoke includes a protrusion portion that abuts an outer peripheral surface portion of the frame that defines the through hole, with the magnetic gap being inside the frame,
• the frame includes an engagement portion that is engaged with the protrusion portion of the yoke to fix the yoke,
• the yoke is held in the frame with the yoke protruding inside the frame,
• the protrusion portion is closer to a center of the yoke than to both end surfaces of the yoke in a tube axis direction of the yoke, and
• the protrusion portion of the yoke includes a flange protruding in a circular ring shape from an outer peripheral surface of the yoke, and an engaging protrusion that protrudes in a radial direction from an outer peripheral surface of the flange.