Planar magnetic transducer with distortion compensating diaphrag

Planar ribbon electro-acoustic transducer with high SPL...

Planar speaker driver

Planar speaker wiring layout

Planar-magnetic speakers with secondary magnetic structure

Planar-type loudspeaker with at least two diaphragms

Plane driving type electroacoustic transducer

Positioning device for diaphragm for speakers

Push-pull electromagnetic transducer with increased Xmax

Push-push multiple magnetic air gap transducer

Push-push multiple magnetic air gap transducer

Quick release spider clamp for loudspeakers

Receiver and method of construction

Receiver and portable communication device

Receiver having an improved bobbin

Receiver-transmitter of communication equipment

Rectangular panel-form loudspeaker and its radiating panel

Rectangular transducer for panel-form loudspeaker

Regressively hinged spider

Reinforced speaker damper