PURPOSE: To obtain an inexpensive electrtomechanical transducer with ease of processing and assembling by using a spring member to support a magnetic yoke to a case and constituting a magnetic circuit with the magnetic yoke and a magnetic plate.

CONSTITUTION: The magnetic yoke 14 is supported to the case 17 so that the relative displacement is attained via a ring form spring 16 and also contained in the case 17 and a magnetic plate 15 having a small magnetic resistance such as an iron plate is covered to the case 17. The yoke 14 and the plate 15 constitute the magnetic circuit, and when a sound current flows to a coil 13, since the magnetic flux of the magnetic circuit comprising the yoke 14 and the plate 15 is changed, the absorbing force exerted between the yoke 14 and the plate 15 is changed. Since the yoke 14, i.e., a moving body is fixed to the case 17 via a spring, an inertia force is acted on the moving body and the vibration in response to the sound current is generated to the case 17.