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Original Dynaquad diamond surround speaker placement. Dynaquad, or DY, was a matrix decoder 4-channel quadraphonic sound system developed by Dynaco in 1969. [1] [2] [3]The system originally had four speakers that were arranged in a diamond shape (centre-front, centre-left, centre-rear, centre-right).
Compatible Discrete 4, also known as Quadradisc or CD-4 (not to be confused with compact disc) was a discrete four-channel quadraphonic system for phonograph records. The system was created by JVC and RCA in 1971 [1] and introduced in May 1972. Hundreds of recordings using this technology were released on LP during the 1970s. [2]
A four channel quadraphonic diagram showing the usual placement of speakers around the listener. Quadraphonic (or quadrophonic, also called quadrasonic or by the neologism quadio [1] [formed by analogy with "stereo"]) sound – equivalent to what is now called 4.0 surround sound – uses four audio channels in which speakers are positioned at the four corners of a listening space.
Dolby AC-4 is an audio compression standard supporting multiple audio channels and/or audio objects. Support for 5.1 channel audio is mandatory and additional channels up to 7.1.4 are optional. [38] AC-4 provides a 50% reduction in bit rate over AC-3/Dolby Digital Plus. [38]
Sprout, a compact integrated amplifier featuring a phono stage, Bluetooth, and a headphone amp, was introduced in a Kickstarter campaign in 2014; subsequently, thousands of units were sold. In 2018 a second generation unit, Sprout100, was introduced; the name reflected the increased power output of 100 watts/channel into 4 ohms.
Best HDTV Antenna Amplifiers. Best Overall: Channel Master Ultra Mini Antenna Amplifier. Best Value: Antop TV Antenna Amplifier. Most Versatile: The Cimple Co TV Antenna Amplifier.