Diatons
Diatone was a Japanese subsidiary of Mitsubishi Electric and manufactured loudspeakers and radios.
history
In the 1940s, Mitsubishi Electric successfully developed a "hard-ferrite" OP magnet (permanent magnet) and thus laid the foundation for the commercial production of magnets based on hard-magnetic ferrites . The OP magnet was a key component in Diatone loudspeaker construction. Diatone achieved international recognition for the first time.
The first Diatone loudspeaker was developed by Mitsubishi Electric at the Ofuna factory in 1945 . Its creation resulted from the recycling of old stocks of magnets. The Second World War was over and an understandable shortage of materials made it necessary to make purchases from other manufacturers. At the time, speaker technology was not advancing very far. The production of loudspeakers was very limited.
After the supply improved and the demand for electronic products became strong, with the prospect of a promising future market, Mitsubishi Electric began to make great strides in extensive speaker development. At that time, Mitsubishi Electric received innovative technical assistance from the Nippon Hoso Kyokai technical research laboratory . This relationship existed for many years to the benefit of both.
In 1947 Mitsubishi Electric invented the so-called “adjustable resonance cone”, an adjustable loudspeaker cone . In connection with an OR magnet, the dynamic loudspeaker P-62 16-cm-F-Type (the forerunner of the P-610) was created. A development that can still be found today in loudspeaker construction. In the 1940s, practically all speaker cones were made from unlined paper and installed together with a cone. The speakers from Mitsubishi Electric, on the other hand, used a special paper for the cone made from Japanese Washi paper , pressed into a conical shape. This loudspeaker delivered an epoch-making performance (resilience) for the time.
Although this development started in 1947, it was not until 1950 that the loudspeaker was recognized and formally accepted as a monitor loudspeaker for broadcasting . It was the first step into a market dominated by foreign products. The name Diatone was registered as a trademark in September 1946.
The loudspeakers from Diatone were used as monitor loudspeakers on the Japanese public radio station NHK -Radio.
Diatone used the D-160 to manufacture loudspeakers up to 1.60 m in diameter.
The production of radio sets began around 1945 with 4-tube receivers in the factory in Itami , in 1999 the factory was closed.
Individual evidence
- ↑ Diatone D-160 on audio-database.com. Retrieved August 4, 2012.