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2. Electro-Voice - Wikipedia

   en.wikipedia.org/wiki/Electro-Voice

   Electro-Voice then adapted their decoders so they also could play SQ records as well as Sansui's QS records. The EV system could also simulate four channel sound from two channel sources. [13] In 1978, Electro-Voice patented its Constant Directivity Horn, which produced an even balance of frequencies across the listening field.

3. Stereo-4 - Wikipedia

   en.wikipedia.org/wiki/Stereo-4

   Stereo-4, also known as EV (from Electro-Voice) or EV-4, was a matrix 4-channel quadraphonic sound system developed in 1970 by Leonard Feldman and Jon Fixler. [1]The system was heavily promoted by RadioShack stores in the United States, and some record companies released LP albums encoded in this format.

4. David Gunness - Wikipedia

   en.wikipedia.org/wiki/David_Gunness

   David W. Gunness (born November 7, 1960) is an American audio engineer, electrical engineer and inventor.He is known for his work on loudspeaker design, especially high-output professional horn loudspeakers for public address, studio, theater, nightclub, concert and touring uses.

5. Electro-Voice RE20 - Wikipedia

   en.wikipedia.org/wiki/Electro-Voice_RE20

   The Electro-Voice RE20 is an American professional cardioid dynamic microphone, commonly used in broadcasting applications since 1968. Designed by Electro-Voice using the company's patented Variable-D technology and a large-diaphragm element, it has been described as an industry standard "iconic" microphone for its natural sound and its wide ...

6. Circlotron - Wikipedia

   en.wikipedia.org/wiki/Circlotron

   A U.S. patent for a circlotron High Fidelity Audio Amplifier was filed by Alpha Wiggins of Electro-Voice on March 1, 1954, and granted March 28, 1958. [1] However, other inventors filed the same concept earlier: [ 2 ]

7. 2 million baked goods, including some sold at Dunkin', recalled

   www.aol.com/2-million-baked-goods-including...

   Manufacturer FGF Brands issued the recall involving products products before December 13, 2024, the FDA said in an enforcement report published on Wednesday. The recall went into effect on January ...