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TitleWide-range electrostatic loudspeaker with a zero-free polar response
Publication TypeJournal Article
Year of Publication2009
AuthorsWhite, D.R.
JournalAES: Journal of the Audio Engineering Society
Pagination822 - 831
Date Published2009
ISSN15494950 (ISSN)
KeywordsAcoustic outputs, Audio frequencies, Ceilings, Cosine response, Electric lines, Electrostatic loudspeakers, Electrostatics, Floors, Frequency response, Integral part, Loudspeakers, Low frequency, RC transmission lines, Stator segments, Transmission line theory, Zero-free
AbstractThe design of the floor-to-ceiling electrostatic doublet, which was partially developed by Baxandall, is completed by using a symmetrical RC transmission line to equalize the frequency response. The combination of tall narrow stator segments and the RC transmission line gives the loudspeaker a broad zero-free polar response that is close to the ideal cosine response of a dipole radiator at all audio frequencies. The equalization also ensures that the whole ESL panel contributes to the acoustic output at low frequencies. Reflections from the floor and ceiling are an integral part of the floor-to-ceiling design.

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