Magnetostatic loudspeaker
A magnetostatic loudspeaker is a dipole loudspeaker that is similar to an electrostatic loudspeaker but instead of using high voltages, uses high currents. Permanent magnets provide a static magnetic field. Wires or strips carrying audio frequency currents are bonded to a thin diaphragm. The current flowing in the conductors interacts with the magnetic field and creates sound in much the same way as in a conventional dynamic driver. Because of its dipole structure, this kind of speaker creates sound mostly to its front and back.
The impedance of a magnetostatic speaker is often mainly resistive, but in some cases (Legacy Apogee Speakers are one example) may be so low that the amplifiers have to be ready to feed low impedance. Magnetostatic speakers provide good sound quality, and may be very thin, but their height and width dimensions are large.[1]
See also
References
- ↑ The principle behind a magnetostatic speaker, HiFi Advice.
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