| 摘要 |
PROBLEM TO BE SOLVED: To maintain necessary accuracy for a transducer at a low cost, in particular centripetalism or eccentricity within admitted limits in a small transducer, in particular in the transducer with a housing whose outer diameter is 15 mm or less. SOLUTION: An electroacoustic transducer is provided with a pot-like main body part (11) made of plastics which can accept metallic coating, this main body part (11) is integrally plastic cast with a housing part (12) showing a housing shape made of plastic which cannot accept metallic coating and the metallic coating is applied at least on the inner side surface of the pot-like main body part (11).
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