Electroacoustic transducer

An electroacoustic transducer comprising:

• a base;
• a core fixed upright on the base;
• a magnet disposed around the core;
• a diaphragm supporting member made of non-magnetic material and disposed around the magnet;
• a diaphragm supported on the diaphragm supporting member;
• and
• a magnetic flux guide member made of magnetic material, disposed between the magnet and the diaphragm and fixed on the diaphragm supporting member;
• wherein the diaphragm supporting member has a projection and the magnetic flux guide member has an opening or a notch, and the magnetic flux guide member is positioned with respect to the diaphragm supporting member by engagement of the opening or the notch with the projection, and the magnetic flux guide member is fixed to the diaphragm supporting member by plastic deformation of the projection.

An electroacoustic transducer comprising:

• a base;
• a core fixed upright on the base;
• a magnet disposed around the core;
• a diaphragm supporting member made of non-magnetic material and disposed around the magnet;
• a diaphragm supported on the diaphragm supporting member;
• and
• a magnetic flux guide member made of magnetic material, disposed between the magnet and the diaphragm and fixed on the diaphragm supporting member,
• wherein a gap for the passage of air is formed between an upper surface of the magnet and a lower surface of the magnetic flux guide member so that the magnetic flux guide member is in non-contact with magnet, and the magnetic flux guide member has an opening for the passage of air.