File:Edward Kellogg & Chester Rice with cone speaker 1925.jpg
![File:Edward Kellogg & Chester Rice with cone speaker 1925.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/e/e3/Edward_Kellogg_%26_Chester_Rice_with_cone_speaker_1925.jpg/800px-Edward_Kellogg_%26_Chester_Rice_with_cone_speaker_1925.jpg?20210503170034)
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editDescriptionEdward Kellogg & Chester Rice with cone speaker 1925.jpg |
English: The first electrodynamic cone loudspeaker invented in 1925 at General Electric laboratories in Schenectady, New York, with inventors Edward W. Kellogg and Chester W. Rice. Modern loudspeakers are based on this design, which combined the moving coil driver mechanism with a paper cone diaphragm. They are holding the driver unit; the completed speaker with its 6 inch cone, is partially visible behind them.
Kellogg and Rice invented the concept in 1921, but it took until 1925 to improve the acoustics enough to compete with existing horn loudspeakers. They filed for patents and announced the device in 1925. The speaker's advantage was that it had flatter frequency response than horn speakers, and could reproduce adequate bass without the enormous length of sound path required in horns. The first commercial model, the RCA Radiola Loudspeaker #104, went on sale in 1926 for $250, about $2000 in today's dollars. Information from History and types of loudspeakers, Edison Tech Center |
Date | |
Source | Retrieved September 24, 2014 from W. T. Meenam, "A new type of hornless loudspeaker" in Popular Radio magazine, published by Popular Radio, Inc., New York, Vol. 8, No. 2, August 1925, p. 128 on American Radio History website |
Author | W. T. Meenam |
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editPublic domainPublic domainfalsefalse |
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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Edward_Kellogg_%26_Chester_Rice_with_cone_speaker_1925.jpg |
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current | 17:00, 3 May 2021 | ![]() | 935 × 603 (360 KB) | Materialscientist (talk | contribs) | FFT |
17:43, 24 September 2014 | ![]() | 948 × 617 (186 KB) | Chetvorno (talk | contribs) | User created page with UploadWizard |
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