Electrodyanimc loudspeaker

Discussion in 'General Electronics Chat' started by emicho, Apr 24, 2012.

  1. emicho

    Thread Starter New Member

    Apr 9, 2012
    i need help in finding the most up to date equivalent circuit of an ElectroDynamic Loudspeaker "EDL"
    Containing all "non-linear/ linear" aspects.. with the references if available...
    any help will be highly appreciated...
    Thanks in advance.
  2. Audioguru

    AAC Fanatic!

    Dec 20, 2007
    I think an electrodynamic speaker is about 76 years old. Instead of a permanent magnet they used a coil with a DC current in it. The coil was part of the power supply filter that fed vacuum tubes in the amplifier. The speaker also used a hum-bucking coil.

    Look in Google. The first link of many is this one: http://www.radioremembered.org/edspeaker.htm and it shows a radio from 1936.