| 1925 |
- October 1st, a founder Rihei Takeuchi established Takeuchi Factory in Shinagawa, Tokyo.
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| 1938 |
- Made the first moving coil microphone for the Manchurian Broadcasting Station.
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| 1940 |
- NHK, the Japan National Broadcasting Corporation asked Sanken to make a miniature dynamic microphone. The following year Sanken successfully developed a stand microphone for broadcasting.
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| 1941 |
- Moved the factory to Ogikubo, Suginamiku, Tokyo
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| 1948 |
- Microphone diaphragm was developed using polystylol. Sanken introduced MS-1 and MS-2.
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| 1952 |
- Sanken developed the first pencil type microphone, the MS-4 in conjunction with NHK.
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| 1956 |
- MS-5 was introduced. It was a pencil shaped microphone with 20mm polystylol diaphragm. The frequency response extends from 50Hz to 10kHz with a sensitivity of -72dB. This microphone became one of the standard model for interview, press conference purpose for a long time in Japan’s broadcast industry.
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| 1959 |
- The organization changed to Sanken Microphone Co., Ltd.
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| 1964 |
- Working in conjunction with NHK Research Laboratory, Sanken developed the MU-1. It was used as a PA microphone at Tokyo Olympic Games. Sanken is proud that the emperor and the president of Olympic Committee, Mr.Brundage made speeches using the MU-1. And also cap mounted ML-1, close-talk moving coil microphone was used for Olympic broadcasting programs. It had very unique because it did not pick up other announcers voices near by.
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| 1967 |
- Sanken and NHK developed the CUS-101 a miniature sized cardioid condenser microphone which uses 2.4 micron thick polyester diaphragm. The small size has made this a popular microphone in Japan TV broadcasting stations.
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| 1968 |
- For Sapporo Winter Olympic Games, Sanken developed the CL-202 condenser microphone. It was free from moisture problems. It would be used in environments ranging from -20 degree C to room temperature. Thus extensive research was conducted to eliminate this problem. Since then, all Sanken microphones have incorporated designs against moisture formation.
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| 1975 |
- An M-S type microphone, CMS-2 was developed. Its diameter is 43mm and its length is 176mm. Such miniaturization is feasible due to Sanken’s original “push-pull” capsule design. Due to this design, sensitivity is increased by 6dB over a non push-pull microphones. Sanken started looking for a metal diaphragm because of anticipated stability against temperature changes and humidity. Titanium is light, strong, corrosion free and immune to change in temperature.
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| 1979 |
- 1979 In anticipation of the digital audio era, NHK and Sanken launched the CU-41, a cardioid 2 way capsule condenser microphone. Sanken used the same woofer and tweeter concept as used in loud speakers. Sanken determined the appropriate, diameter of both capsules with one for high frequencies and the other for low frequencies. The frequency response is flat from 20 to 20kHz, not only on axis , but also at 90 degrees and even at 135 degrees.
Sanken aims to have the sound as transparent as possible.
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| 1983 |
- Rihei Takeuchi was installed as a chairman. Tokio Takeuchi assumed the post of president. Started to export, appointed distributors in both USA and UK.
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| 1998 |
- Specially designed “in the ice” microphone was used at Nagano Olympic Games in order to pick up ice skating sound directly.
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| 1999 |
- Tokio Takeuchi passed away. Michiko Takeuchi was installed as a president.
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| 2005 |
- 80th anniversary.
- CO-100K ultra wide frequency response microphone was awarded as “One of the Best Equipment of the Exhibition” at AES NY.
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| 2008 |
- A 100kHz super wide range microphone “CO-100K” was awarded the Technical Development Prize of Acoustical Society of Japan
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