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2. Electrostatic loudspeaker - Wikipedia

   en.wikipedia.org/wiki/Electrostatic_loudspeaker

   Schematic showing an electrostatic speaker's construction and its connections. The thickness of the diaphragm and grids has been exaggerated for the purpose of illustration. An electrostatic loudspeaker (ESL) is a loudspeaker design in which sound is generated by the force exerted on a membrane suspended in an electrostatic field.

3. List of loudspeaker manufacturers - Wikipedia

   en.wikipedia.org/wiki/List_of_loudspeaker...

   PMC speakers: United Kingdom Polk Audio: United States ProAc: United Kingdom PSB Speakers: Canada QSC Audio Products: United States Quad Electroacoustics: United Kingdom (brand) Radio Shack: United States RCF audio: Italy Rectilinear Research Corporation: United States Rega Research: United Kingdom Renkus-Heinz: United States ReVox: Switzerland ...

4. Quad Electrostatic Loudspeaker - Wikipedia

   en.wikipedia.org/wiki/Quad_Electrostatic_Loudspeaker

   Late version Quad "ESL-57" loudspeaker with black grilles and rosewood end caps. The Quad Electrostatic Loudspeaker (ESL) is the world's first production full-range electrostatic loudspeaker, launched in 1957 by Quad Electroacoustics, then known as the Acoustical Manufacturing Co. Ltd. [1] The speaker is shaped somewhat like a home electric radiator curved slightly on the vertical axis.

5. MartinLogan - Wikipedia

   en.wikipedia.org/wiki/MartinLogan

   MartinLogan was founded by Gayle Martin Sanders and Ron Logan Sutherland who met in the late 1970s at a high-end audio store Sanders managed in Lawrence, Kansas.Despite different backgrounds (Sanders had trained in architecture and advertising, Sutherland in electrical engineering) they shared a passion for music and electrostatic loudspeakers.

6. List of Stax products - Wikipedia

   en.wikipedia.org/wiki/List_of_Stax_products

   ELS-6A - Electrostatic loudspeakers, 1976; ELS-F81 - Electrostatic loudspeaker, 1981; ESTA-4U - Electrostatic loudspeaker, 1982 (self-biasing) EK-1 - Kit electrostatic speaker, 1983; ELS-F83 - Electrostatic loudspeaker, 1983; ESTA-4U Extra - Electrostatic loudspeaker, 1983 (self-biasing) EK-1/MK2 - Electrostatic loudspeaker, 1984

7. Magnepan - Wikipedia

   en.wikipedia.org/wiki/Magnepan

   Magnepan has used several different technologies in constructing their magnetostatic speakers.All Magnepan speakers are based on flexible ferrite magnet strips (like refrigerator magnets), 0.060" (1.5 mm) thick, typically cut to either 1/4" (6 mm) wide (mid-bass) or 1/8" (3 mm) wide (tweeters) and more or less the length of the speaker.

8. The best air purifiers of 2025 - AOL

   www.aol.com/lifestyle/best-air-purifiers...

   We put the best air purifiers from Lenovo, Honeywell, Winix, and more to the test to see which held up best (and actually purified the air for you). See what our product scientist has to say.

9. Quad Electroacoustics - Wikipedia

   en.wikipedia.org/wiki/Quad_Electroacoustics

   Subsequent electrostatic models, the 988/989, the 2805/2905 and then the 2812/2912 were successive refinements of the ESL-63 design, featuring increased power handling and output levels, more sophisticated overload protection, and greater structural rigidity. A Quad L-ite satellite speaker provides the audio for a concert at home.