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  2. Zenith Electronics - Wikipedia

    en.wikipedia.org/wiki/Zenith_Electronics

    They were joined in 1921 by Eugene F. McDonald, [4] and Zenith Radio Company was incorporated in 1923. The fledgling company soon became known for its high-quality radios and electronic innovations. Zenith introduced the first portable radio in 1924, [4] [5] the first mass-produced AC radio in 1926, [5] and push-button tuning in 1927. [4]

  3. Zenith Data Systems - Wikipedia

    en.wikipedia.org/wiki/Zenith_Data_Systems

    Zenith Data Systems Corporation (ZDS) was an American computer systems manufacturing company active from 1979 to 1996.It was originally a division of the Zenith Radio Company (later Zenith Electronics), after they had purchased the Heath Company and, by extension, their Heathkit line of electronic kits and kit microcomputers, from Schlumberger in October 1979.

  4. Trans-Oceanic - Wikipedia

    en.wikipedia.org/wiki/Trans-Oceanic

    The Zenith 'T/O' began life in October 1941 with the production of the Model 7G605 'Trans-ocean Clipper'. Priced at $75, it was introduced in January 1942 but ceased production in April 1942 as Zenith shifted their production to war-related equipment. During this short production run, some 35,000 units were produced and sales data showed that ...

  5. Heathkit - Wikipedia

    en.wikipedia.org/wiki/Heathkit

    Seeing the potential in personal computers, Zenith Radio Company bought Heath Company from Schlumberger in 1979 for $63 million, [16] [17] renaming the computer division Zenith Data Systems (ZDS). Zenith purchased Heath for the flexible assembly line infrastructure at the nearby St. Joseph facility as well as the R&D assets.

  6. Stereophonic sound - Wikipedia

    en.wikipedia.org/wiki/Stereophonic_sound

    These records often included instructions for setting up a stereo system, 'balancing' the speakers, and a variety of ambient recordings to show off the stereo effect. [86] When playing back stereo recordings, the best results are obtained by using two identical speakers, in front of and equidistant from the listener, with the listener located ...

  7. Zenith Z-100 - Wikipedia

    en.wikipedia.org/wiki/Zenith_Z-100

    The Zenith Data Systems Z-100 is a pre-assembled version of the Heathkit H100 electronic kit. [2] In the same family, the Z-120 is an all-in-one model with self-contained monitor, and the Z-110 (called the low profile model) is similar in size to the cabinet of an IBM PC. [3]

  8. List of CRT video projectors - Wikipedia

    en.wikipedia.org/wiki/List_of_CRT_video_projectors

    Barco Vision Special Video [16] Barco: 1985: 7 inches: Clinton: No : 10 MHz : 15 kHz : Dual Special Video [16] Barco: 1985: 7 inches: Clinton: No : 10 MHz : 15 kHz : Two projectors mounted in a special pedestal allowing twice the brightness. One projector can converge on green. [17] Special Video Mk2 [16] Barco: 1986: 7 inches: Clinton: No : 15 ...

  9. JBL - Wikipedia

    en.wikipedia.org/wiki/JBL

    1947 – JBL has a 15" speaker (38 cm), model D-130, using for the first time a 4" (100 mm) voice coil in a speaker cone; 1949 – James. B. Lansing dies of suicide; William Thomas became president of the company; 1954 – The 375 compression engine is the first 4-inch engine sold; its response extends to 9 kHz