| abstract |
The invention relates to a loudspeaker designed with a large area having sandwich-like layer structure, consisting of a plurality of conductive and nonconductive layers which form an active sound-radiating loudspeaker surface, having:n a first diaphragm sheet ( 1 ) coated with an electrically conductive layer ( 3 ), a second diaphragm sheet ( 2 ) coated with an electrically conductive layer ( 4 ) a static high-voltage supply ( 9 ), which generates an electric field between the first electrically conductive layer ( 3 ) and the second electrically conductive layer ( 4 ), an audio source ( 10 ) which influences the high-voltage fields between the first electrically conductive layer ( 3 ) and the second electrically conductive layer ( 4 ) via a capacitor ( 15 ). nn The invention is distinguished in that, with the second electrically conductively coated diaphragm sheet ( 2 ), the first electrically conductively coated diaphragm sheet ( 1 ) forms a sandwich which extends simply over the active loudspeaker surface, around a first elastic and nonconductive interlayer ( 5 ). |