MAGNETIC CIRCUIT FOR SPEAKER DEVICE AND SPEAKER DEVICE

摘要

Provided are an inexpensive magnetic circuit for a speaker device and a speaker device, the magnetic circuit having a small diameter and a light weight and capable of achieving both the magnet use efficiency and the magnetic flux density. A magnetic circuit (100) used for a speaker device (1) comprises: a magnet (130), a plate (110) provided on one pole side of the magnet (130); a yoke (120) provided on the other pole side of the magnet (130); and a magnetic gap (G) formed between the plate (110) and the yoke (120). The magnet (130) is an Fe-Cr-Co-based magnet.