The Physics of Loudspeakers

History of the Loudspeaker

    The first form of loudspeaker did not use electricity. This device used a horn to amplify sound . This type of speaker was created by Thomas Edison and was created around 1880. For the time this was revolutionary but not very practical. This version of the loudspeaker did not produce very much sound.
    The first person to come up with the idea of an electromagnetic speaker was a man named Werner Von Siemens. He came up with a design that used a coil to amplify the sound. Due to the times lack of knowledge about sound and electricity, Siemens had no way of creating this device.

    In 1924 the first successful design of the modern electrodynamics was created. This design was created by two men named Chester W. Rice and Edward Washburn Kellogg. This design consisted of a moving coil that significantly raised sound quality and volume. This loudspeaker design was sold in stores under the name "Radiola."
    Since then many different types of speakers have been made but many still use the designs made by these men.