An electro-acoustic transducer comprising: a diaphragm (309, 509); an edge which supports said diaphragm (309,509); a housing (303, 304, 305, 306; 503, 504, 505, 506) which supports said edge; a first and second magnets (301, 302; 501, 502) which are placed so as to face each other and form a magnetic gap and each to face a respective surface of said diaphragm (309, 509) so that the diaphragm (309, 509) is placed between said magnets (301, 302; 501, 502) and which are magnetized in directions that are opposite to each other and are parallel to the direction in which said diaphragm (309, 509) vibrates; a drive coil (307,507) which is provided on said diaphragm (309,509); a first yoke (303, 503) which forms a magnetic path in at least a portion of the periphery of said first magnet (301,501); and a second yoke (304, 504) which forms a magnetic path in at least a portion of the periphery of said second magnet (302,502) wherein said drive coil (307, 507) is adapted to be placed so that the approximate center of said drive coil (307, 507) in the radius direction thereof is located on lines connecting the outer peripheries of said first and second magnets (301, 302; 501, 502) characterized in that the first and second yokes (303, 304; 503, 504) surround the first and second magnets (301, 25 302; 501, 502) whereby the first magnet (301,501) and the first yoke (303,503), as well as the second magnet (302,502) and the second yoke (304, 504), respectively, form magnetic paths where the magnetic fluxes from the first and second magnets (301, 302; 501, 502) converge by means of the first and second yokes (303, 304, 503, 504) and are lead to said magnetic gap by means of the first and second yokes (303, 304, 503, 504). a diaphragm (309, 509); an edge which supports said diaphragm (309,509); a housing (303, 304, 305, 306; 503, 504, 505, 506) which supports said edge; a first and second magnets (301, 302; 501, 502) which are placed so as to face each other and form a magnetic gap and each to face a respective surface of said diaphragm (309, 509) so that the diaphragm (309, 509) is placed between said magnets (301, 302; 501, 502) and which are magnetized in directions that are opposite to each other and are parallel to the direction in which said diaphragm (309, 509) vibrates; a drive coil (307,507) which is provided on said diaphragm (309,509); a first yoke (303, 503) which forms a magnetic path in at least a portion of the periphery of said first magnet (301,501); and a second yoke (304, 504) which forms a magnetic path in at least a portion of the periphery of said second magnet (302,502) wherein said drive coil (307, 507) is adapted to be placed so that the approximate center of said drive coil (307, 507) in the radius direction thereof is located on lines connecting the outer peripheries of said first and second magnets (301, 302; 501, 502) characterized in that the first and second yokes (303, 304; 503, 504) surround the first and second magnets (301, 25 302; 501, 502) whereby the first magnet (301,501) and the first yoke (303,503), as well as the second magnet (302,502) and the second yoke (304, 504), respectively, form magnetic paths where the magnetic fluxes from the first and second magnets (301, 302; 501, 502) converge by means of the first and second yokes (303, 304, 503, 504) and are lead to said magnetic gap by means of the first and second yokes (303, 304, 503, 504).