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These were initially meant to be used with the 100 watt MSA-100 amplifier; then later in 1985 the 200 watt MSA-200 amplifier was released which was compatible with the MGE-160 graphic equalizer. [9] The impedance of the SPK-375 was six ohms and their sensitivity was 91 dB/watt/meter. [10]
One year after its founding, in 1954 Harman Kardon introduced their first products, the 7 tube A-100 AM - FM tuner featuring automatic frequency control, priced at $70.50 (equivalent to $800 in 2023) [7] [8] and the Festival D-1000 receiver, the world's first integrated hi-fi receiver priced at $189.50 (equivalent to $2,150 in 2023).
Having spent less than US$150,000 on development, Radio Shack announced the TRS-80 (Tandy Radio Shack) at a New York City press conference on August 3, 1977. [18] It cost US$399 (equivalent to $2,000 in 2023), or US$599 (equivalent to $3,000 in 2023) with a 12" monitor and a Radio Shack tape recorder; the most expensive product Radio Shack previously sold was a US$500 stereo.
In 1954 their first products were the 7 tube A-100 AM - FM tuner featuring automatic frequency control, priced at $70.50 (equivalent to $800 in 2023) [19] [20] and the Festival D-1000 receiver, the world's first integrated hi-fi receiver priced at $189.50 (equivalent to $2,150 in 2023). Advertised as having "all the critical electronic elements ...
Over the next 20 years, transistors replaced tubes almost completely except for high-power transmitters. By the mid-1960s, the Radio Corporation of America (RCA) were using metal–oxide–semiconductor field-effect transistors (MOSFETs) in their consumer products, including FM radio, television and amplifiers. [67]
The General Motors streetcar conspiracy refers to the convictions of General Motors (GM) and related companies that were involved in the monopolizing of the sale of buses and supplies to National City Lines (NCL) and subsidiaries, as well as to the allegations that the defendants conspired to own or control transit systems, in violation of Section 1 of the Sherman Antitrust Act.
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