Audio Amplifier, metal amplifier with 2 valves in fine wood lidded case, London, before 1926, accompanied by Magnavox R3 horn speaker, 1920s. The Sterling Telephone & Electric Company was one of the earlier English telephone and electrical equipment manufacturers dating back to the 19th century. The Magnavox R3 was the first speaker to employ a voice coil in the reproduction of sound.
Audio Amplifier, metal amplifier with 2 valves in fine wood lidded case, London, before 1926, accompanied by Magnavox R3 horn speaker, 1920s. The Sterling Telephone & Electric Company was one of the earlier English telephone and electrical equipment manufacturers dating back to the 19th century. The Magnavox R3 was the first speaker to employ a voice coil in the reproduction of sound.
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/68425/Internet%20Image%201.jpg "Quelle: Dix Noonan Webb")
