PURPOSE: To reduce magnetic flux leaking from a magnetic circuit to outside the speaker by providing a frame with a double shielding part, using its internal shielding part as a part of the magnetic circuit and coupling it with a plate type shielding plate which eliminates the need for contraction working, and thus constituting a low leak magnetic circuit.

CONSTITUTION: A frame 24 molded of a magnetic metal body in a shape for shielding the entire flank of the magnetic circuit double is coupled with the upper plate 22 of the magnetic circuit constituted by sandwiching a main magnet 21 between an upper plate 22 and a lower plate 23. Then a cancel magnet 31 is coupled with the back of the lower plate 23 of the magnetic circuit, the shielding part for the cancel magnet 31 and frame 24 is further coupled with the back of the cancel magnet, and the plate type shielding plate 32 which constitutes a magnetic circuit for the cancel magnet is adhered. Consequently, the low leak magnetic flux type speaker which has extremely superior performance to leak magnetic flux can be realized.