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Zenith radiogram console stereo, circa 1960.. Home audio dates back before electricity, to Edison's phonograph, a monaural, low fidelity sound reproduction format. Early electrical phonographs as well as many other audio formats started out as monaural formats.
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RCA Graphic Systems Division (GSD) was an early supplier of electronics designed for the printing and publishing industries. It contracted with German company Rudolf Hell to market adaptations of the Digiset photocomposition system as the Videocomp, and a Laser Color Scanner. The Videocomp was supported by a Spectra computer that ran the Page-1 ...
In 1979, Zenith entered the computer market with the purchase of Heath Company from Schlumberger for $64.5 million, forming Zenith Data Systems (ZDS). [17] The company changed its name to Zenith Electronics Corporation in 1984 to reflect its interests in computers and CATV , having left the radio business two years earlier.
Luxor Empire radiogram from 1948. Typical for the 78 rpm era, the record player is a changer, designed to be loaded with a stack of shellac records. Braun Table Radiogram, Model SK5, c 1962. In British English, a radiogram is a piece of furniture that combined a radio and record player. [1] The word radiogram is a portmanteau of radio and ...
Sound quality was much improved. The internal mechanical design was quite similar to the earlier models, and still used a steel chassis and point-to-point wiring, rather than PC boards. Production of the Royal 7000 is estimated at 130,000. The last model Trans-Oceanic was the R7000 series introduced in 1979.
For many years, it was customary to "brand" a film with its sound system, variously as "RCA Sound Recording", "Western Electric Recording", or similar brands, often including the corporate logo of the licensor (Meatball for RCA; The Voice of Action for Western Electric; Li Westrex for the post-1956 divestiture of Western Electric under Litton ...
Unusually for a Hacker, this set had coverage to 108 MHz - the FM front end was supplied by Görler. The audio sections were based around a pair of ECL86 triode/pentode valves that operated in push-pull, delivering around 7 watts in ultra-linear mode to a large (10 by 7 inch) loudspeaker. An EM84 "magic eye" tuning indicator valve was used.