Power system for a loudspeaker has an air gap between pole ends to power the system through the effect of a magnet along a line vertical to magnetic flux lines interspersing the air gap

摘要

Linked to a sound emitter (9a), a power unit (9) with a coil (10) is powered through the effect of a magnet (1) along a first line (8) vertical to magnetic flux lines interspersing an air gap (AG) (4) between first (6a) and second (7a) pole ends. To attain improved, constant distribution of magnetic flux along the AG, the second pole end splits into layers (12-14) vertical to the first line.