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Sansui Electric

Sansui Electric is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Sansui Electric rather than just read about it. In short: Sansui Electric Co., Ltd. (山水電気株式会社, Sansui Denki Kabushiki-gaisha) was a Japanese manufacturer of audio and video equipment headquartered in Tokyo, Japan.

Sansui Electric — main illustration
Sansui Electric — illustration

Key takeaways

  • Sansui Electric belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Sansui Electric to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Sansui Electric from memory before moving on to harder problems.

Reference excerpt

Sansui Electric Co., Ltd. (山水電気株式会社, Sansui Denki Kabushiki-gaisha) was a Japanese manufacturer of audio and video equipment headquartered in Tokyo, Japan. It was active internationally up until the late 2000s; in 2014 the Chinese company Grande Holdings acquired the rights to license the Sansui name outside Japan.

History The company was founded in Tokyo in 1947 by Kosaku Kikuchi, who had worked for a radio parts distributor in Tokyo before and during World War II. Due to the poor quality of radio parts Kikuchi had to deal with, he decided to start his private radio part manufacturer facility in December 1944 in Yoyogi, Tokyo. He chose transformers as his initial product line. Kikuchi's thought was "Even with higher prices, let's make the higher quality of products." In 1954 manufacturing pre-amp, main-amp kits, as well as finished amplifiers which used tubes, was started; in 1958 Sansui introduced the first stereo tube pre- and main amplifiers. By the 1960s Sansui had developed a reputation for making serious audio components. They were sold in foreign markets through that and the next decade. Sansui's amplifiers and tuners from the 1960s and 1970s remain in demand by audio enthusiasts. Since 1965 the matte-black-faced AU-series amplifiers were released. In 1967 Sansui produced its first turntable. In 1971, Sansui introduced the Quadphonic Synthesizer QS-1, which could make simulated four-channel stereo from two-channel sources. Sansui developed the QS Regular Matrix system, which made it possible to transmit four-channel Quadraphonic sound from a standard LP. The channel separation was only 3 dB, but because of the human way of hearing it sounded relatively good. In 1973, Sansui introduced the more advanced QS Vario Matrix decoder with 20 dB separation. The SQ system developed by Columbia/CBS was the most popular matrix system. But later QS decoders could also play SQ records. Some Sansui receivers could also play the most advanced four-channel system: CD-4 (or Quadradisc) by Japanese JVC and American RCA. Most big record companies used either SQ or CD-4, but Decca used the Sansui QS system. The 2-channel-range was extended by tape machines and cassette decks. The company also produced the Sansui AU-11000 in the mid-70s . In 1974 Kosaku Kikuchi resigned, and vice-president Kenzo Fujiwara became president. In the late 1970s, the first-generation '07' models included the dual-mono power supply AU-517 and AU-717, and the second generation featured the updated AU-719, 819, and 919 were released. The separate pre-amp/power-amp CA-F1/BA-F1 topped the model range along with the AU-X1 integrated amplifier (1979). In the UK around 1982, the Sansui AU-D101 amplifier and its more powerful sibling the AU-D33, were acclaimed by audiophiles and were so well matched to a pair of KEF Coda III speakers that they could be bought as a set from some outlets. These amplifiers used a complex feed-forward servo system which resulted in very low second order harmonic distortion. Despite this success, Sansui failed to follow up with further mass-market audiophile components. As the mid-1980s arrived, sales were lost to competitors (Sony, Pioneer, Matsushita's Technics). Sansui began to lose visibility in the United States around 1988, and then focused on manufacturing high-end components in Japan. The company began to manufacture high-end television sets and other video equipment, but ceased exportation. In the late 1990s, the company's brand was used on video equipment manufactured by other companies. The current manufacturer of the rebranded sets is Orion Electric, based in Osaka and Fukui, Japan. Its U.S. subsidiary markets products under the Sansui brand, among others. Sansui is thus a mere umbrella brand at present. This radical change in Sansui's corporate identity has resulted in a notable change in its product quality as consumers now tend to consider Sansui a mass-market brand rather than a maker of high-end electronics. Sansui had developed the patented α(alpha)-x balanced circuit, that used in its high power amplifier along with the so-called double diamond differential, another patent for balanced driver stage. Lately Sansui had developed a turntable, P-L95R, with a handling similar to CD-players; it allowed to play both sides of the record without turning it. Its latest amplifiers included the a-u alpha series like the 707´and 907 (1987) au-x1111 (round about 1990) and others; b-2105 mos with a weight of 37 kg (82 lb) (1999) Sansui ended its Japanese production of high-end amplifiers some time between 2002 and 2005. In 2001 the headquarters in Shi-Yokohama was closed. The Japanese website as HiFi-manufacturer was last updated January 2014; Sansui went out of business in 2014. Sansui's sales had shriveled to just 40.4 million yen by 2010. The 2003 founded Sansui Electric China Co Ltd stayed longer than 2014. In Japan, consumer product maker Doshisha has the right to manufacture and sell under the Sansui brand. Outside of Japan, the brand belongs to Nimble Holdings of Hong Kong.

See also List of phonograph manufacturers

References

External links

Sansui at audio-database.com (with pictures) Audiokarma, a Popular Sansui Enthusiasts Forum Global website US website Sansui India website Sansui India Address

Illustrations

Sansui Electric: Founder of Sansui, Kosaku Kikuchi
Founder of Sansui, Kosaku Kikuchi
Sansui Electric: AU-666 amplifier 1970[1]
AU-666 amplifier 1970[1]
Sansui Electric: Sansui 9090DB Stereo Receiver (1975)
Sansui 9090DB Stereo Receiver (1975)
Sansui Electric: Sansui QRX-5500 Quadrophonic Receiver
Sansui QRX-5500 Quadrophonic Receiver
Sansui Electric: D-X301i Cassette Deck with last logo from 1987[2]
D-X301i Cassette Deck with last logo from 1987[2]

Worked examples

Example 1 — a first encounter with Sansui Electric

Start with the simplest possible case. Write down what Sansui Electric claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Sansui Electric before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Sansui Electric ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Sansui Electric

In research
Sansui Electric appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Sansui Electric in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Sansui Electric is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1989 mergers and acquisitions, 1992 mergers and acquisitions, 2001 mergers and acquisitions, so understanding it makes those chapters shorter.
In everyday life
Look for Sansui Electric outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Sansui Electric in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Sansui Electric means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Sansui Electric out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Sansui Electric in simple terms?

Sansui Electric Co., Ltd. (山水電気株式会社, Sansui Denki Kabushiki-gaisha) was a Japanese manufacturer of audio and video equipment headquartered in Tokyo, Japan.

Why does Sansui Electric matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Sansui Electric?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Sansui Electric.

Tags

  • 1989 mergers and acquisitions
  • 1992 mergers and acquisitions
  • 2001 mergers and acquisitions
  • Audio equipment manufacturers of Japan
  • Companies formerly listed on the Tokyo Stock Exchange
  • Japanese brands
  • Japanese companies disestablished in 2014
  • Japanese companies established in 1947
  • Manufacturing companies disestablished in 2014
  • Manufacturing companies established in 1947
  • Mobile phone manufacturers
  • Phonograph manufacturers

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