The invention relates to an electromagnetic electroacoustic transducer, for example, used in a ringer of a cellular phone. A resin-bonded magnet (11) is formed of a magnetically hard material and a magnetically soft material. The magnet has a magnetic gap, the flux density in which can be changed depending on the proportion of the magnetically soft material so that the lowest resonance frequency can be set easily. The magnetically soft material increases the permeability of the resin-bonded magnet (11), thereby increasing the flux density. This increases the force for driving the vibrator and provides a small electroacoustic transducer capable of producing high sound pressure.