Abstract: A loudspeaker capable or reliably realizing a repulsion magnetic circuit without using adhesive agent, improving the reliability of the loudspeaker, and facilitating the adjustment of sound quality and anti-heat, and a method of assembling a loudspeaker easily and safely. A structure of a loudspeaker including a repulsion magnetic circuit formed by two magnets with the same polarity being faced with each other and by a plate made of magnetic material such as iron and interposed between the two magnets, and a voice coil disposed in a magnetic field at the outer circumferential area of the plate, wherein a support shaft is formed on a holder for holding magnetic circuit components, the magnets and plate are disposed on the support shaft with position alignment, the support shaft is formed with a mount for a fastening member such as a thread, a guide hole, a projection, and a recess, and the magnets and plate are fastened and fixed by coupling the fastening member to the mount.

Abstract: A loudspeaker capable or reliably realizing a repulsion magnetic circuit without using adhesive agent, improving the reliability of the loudspeaker, and facilitating the adjustment of sound quality and antiheat, and a method of assembling a loudspeaker easily and safely. A structure of a loudspeaker including a repulsion magnetic circuit formed by two magnets with the same polarity being faced with each other and by a plate made of magnetic material such as iron and interposed between the two magnets, and a voice coil disposed in a magnetic field at the outer circumferential area of the plate, wherein a support shaft is formed on a holder for holding magnetic circuit components, the magnets and plate are disposed on the support shaft with position alignment, the support shaft is formed with a mount for a fastening member such as a thread, a guide hole, a projection, and a recess, and the magnets and plate are fastened and fixed by coupling the fastening member to the mount.