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  2. List of loudspeaker manufacturers - Wikipedia

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

    Oswalds Mill Audio: United States Panasonic: Japan Peavey Electronics: United States Philips: Netherlands Pioneer: Japan 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 ...

  3. 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.

  4. Optonica - Wikipedia

    en.wikipedia.org/wiki/Optonica

    Optonica amplifier (SM-3636) and tuner (ST-3636) from 1978. The Optonica brand was created and first launched by Sharp of Japan in 1975 to compete in the high-end audio market along with established brands such as Sansui Electric, Sony, Panasonic, Sanyo, Yamaha, Nakamichi, Onkyo, Fisher Electronics, Technics (brand), Pioneer Corporation, Kenwood Corporation, JVC, Harman Kardon and Marantz.

  5. Ford getting complaints about ‘ear piercing’ noise from ...

    www.aol.com/ford-getting-complaints-ear-piercing...

    Ford has gotten about 100 complaints from F-150 truck owners who say the speakers in their vehicles are emitting a loud, annoying noise that sounds like static, or glass shattering, and which ...

  6. White van speaker scam - Wikipedia

    en.wikipedia.org/wiki/White_van_speaker_scam

    The white van speaker scam is a scam sales technique in which a con artist makes a buyer believe they are getting a good price on home entertainment products. Often a con artist will buy inexpensive, generic speakers [1] and convince potential buyers that they are premium products worth hundreds or thousands of dollars, offering them for sale at a price that the buyer thinks is heavily ...

  7. Loudspeaker - Wikipedia

    en.wikipedia.org/wiki/Loudspeaker

    A loudspeaker (commonly referred to as a speaker or, more fully, a speaker system) is a combination of one or more speaker drivers, an enclosure, and electrical connections (possibly including a crossover network). The speaker driver is an electroacoustic transducer [1]: 597 that converts an electrical audio signal into a corresponding sound. [2]