AN ELECTROSTATIC LOUDSPEAKER

摘要

An electrostatic loudspeaker (22) which includes sectioned stators (26) with each stator section (26a, 26b, 26c) having a diaphragm (28). The diaphragms for all the stator sections may be provided by a single membrane (28). At least one of the stators (26) of the loudspeaker includes terminals for the diaphragms of each stator section to have separate polarising voltages (46) applied thereto (48, 50) for the diaphragms to be differently electrically charged. Three stator sections are preferably provided and each may have a different air gap (30a, 30b, 30c) between a stator and its diaphragm. A stator section (26c) for generating high frequency acoustic sound waves is preferably located between stator sections (26a, 26b) for generating, respectively low frequency and mid- range acoustic sound waves. Embodiments of the invention give improved sound output across substantially the whole audio range.