Sound transducer e.g. loudspeaker, magnetic system, has outer and inner part volumes made of plastic-bound magnet material, where magnets that are developed in plastic-bound magnetic material are provided with preset polarity in volumes

摘要

The system (30) has magnets (43, 44) that are developed in a plastic-bound magnetic material. The magnets provide a magnetic field for a moving coil (18). An outer part volume (40) and an inner part volume (42) are made of the plastic-bound magnet material, where each magnet is provided with a preset polarity in the part volumes. The magnets are aligned in a transverse direction or in a longitudinal direction of the sound transducer-magnetic system. The inner part volume is formed in a circular shape or disk shape.