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Edison, Thomas A., North American Phonograph / National Phonograph; Orange, NJ
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| Nom: | Edison, Thomas A., North American Phonograph / National Phonograph; Orange, NJ (USA) |
| Abréviation: | edison |
| Produits: | Modèles Autres Fabricant de tube |
| Résumé: |
Thomas A. Edison Incorporated,(National Phonograph), Orange, Jew Jersey. Also: Thomas A. Edison, Inc., Lakeside Avenue opposite Ashland Avenue, West Orange, N.J.; Edison Voicewriter Division (~1953). |
| Fondé: | 1888 |
| Histoire: |
The North American Phonograph Company was an early attempt to commercialize the maturing technologies of sound recording in the late 1880s and early 1890s. Though the company was largely unsuccessful in its goals due to legal, technical and financial problems, it set the stage for the modern recording industry in the mid 1890s. In 1892, North American was still struggling to pay its debts when a series of financial measures were taken. In June, the company issued bonds to ease the liquidity crisis. In July, Edison was named president of North American. National Phonograph Company In 1896, the court in charge of the North American receivership let Edison buy North American's assets, with the condition that he also accept North American's liabilities. Edison formed the National Phonograph Company in January 1896, and transferred North American's patents and supplies to this company. The National Phonograph Company was founded by Thomas A.Edison in 1896. The European headquarters in 1897 in Antwerp, moved 1904 to London.Started with the "Spring Motor"(renamed the "Triumph" in 1900) and the "Clockwork"(renamed the "Home"). Followed by the "Gem" and others. In 1902 there was an agreement between talking machine manufacturers, under which the National Phonograph Company was only permitted to produce cylinder playing instruments and cylinders. This lasted until 1912, when the Edison Diamond Disc Phonograph and records were introduced.
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Edison vertical cut records
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Georg Richter
31.Oct.10 |
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Those who are not familiar with the Edsion vertical cut records should remember the original warning and hints regarding reproducing and cleaning:
Playing of those records with steel needles will finally damage the "microscopic sound-wave endulations"! Cleaning with alcohol (etc.) or soaking with water is forbidden because the records are not of the common shellac material (which also will melt by using alcohol). If they are dusty or dirty I would recommend to polish them with a microfiber cloth. Despite the thicknes of 1/4" (6,25mm) the records must be handled carefully and are fragile if plumped on the edge. Nowadays you can play those records on a modern stereo turntable with a 65µ (2.5mil) stylus. Stereo is necessary to enable the audio restauration software to remove clicks, pops and noise from both channels separately. If the restauration process is finished it is a must to split the stereo signal and invert one of the channels to get finally a monaural sound. Otherwise you will hear the noise only, but not the signal. Because the recording speed of 78 or 80 rpm is not mentioned on the records (but on some record sleeves from which you you hope it will originally belong to your record) you can adjust the speed for best result with your software by multiplication with 1.02564. If your turntable does not provide 78 rpm you can play on 45 rpm and use a multiplicator of 1.73333 - but it wil also shift the rumble frequencies. Audacity (freeware) is recommended for speed adjustment and inverting. Best Regards, GR |
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