2pEA2. Radial magnetic topology for dynamic loudspeakers.

Session: Tuesday Afternoon, June 17

Author: Ted R. Telesky
Location: AuraSound Professional Products Div., Aura Systems, Inc., 2335 Alaska Ave., El Segundo, CA 90245, ttelesky@aurasystems.com
Author: Neil A. Shaw
Location: Menlo Sci. Acoust., Inc., Topanga, CA 90290


Magnetic topologies for loudspeakers have remained essentially unchanged since the conversion from electrodynamic to dynamic magnetic structures. By utilizing the magnetic technology developed for long-stroke linear actuators, a neodymium magnet circuit was developed by dynamic loudspeakers that uses a radially charged magnetic topology. Benefits of this topology include large linear travel, low distortion, and high-power handling. The topology is also inherently shielded. The technology has been successfully demonstrated in dynamic cone-type direct radiator transducers that range in size from 2 to 18 in. in diameter.

ASA 133rd meeting - Penn State, June 1997