Speaker

A speaker, comprising:

• a holder;
• a vibration unit fixed to the holder;
• and
• a magnetic circuit unit fixed to the holder,
• wherein the magnetic circuit unit comprises a yoke fixed to the holder, a main magnet and an auxiliary magnet that are assembled on the yoke, and the main magnet is spaced apart from the auxiliary magnet to form a first magnetic gap,
• the yoke comprises a bottom wall and a sidewall formed by extending from a periphery of the bottom wall while being bent, the main magnet and the auxiliary magnet are assembled on the bottom wall, the auxiliary magnet is provided along a long axis direction of the bottom wall, the sidewall is located in a short axis direction of the bottom wall, and the sidewall is spaced apart from the main magnet to form a second magnetic gap,
• the bottom wall comprises two long side edges arranged along the long axis direction, two short side edges arranged along the short axis direction, and connecting edges,
• each of the connecting edges connects one of the two long side edges and one of the two short side edge that are adjacent, and the sidewall is located at an intermediate portion of any one of the two short side edges.