Encyclopedia > E > Electrostatic loudspeaker
Electrostatic loudspeaker
Electrostatic loudspeakers use a thin flat diaphragm usually consisting of a plastic sheet impregnated with a conductive material such as graphite sandwiched between two electrically conductive grids, with a small air gap between the diaphragm and grids. For low distortion operation, the diaphragm must operate with a constant charge on its surface, rather than with a constant voltage.
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