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→Electrostatic speakers: adding image
Although much less common, kinds of speakers other than dynamic also exist. These are a few other kinds:
Although much less common, kinds of speakers other than dynamic also exist. These are a few other kinds:
===Electrostatic speakers===
===Electrostatic speakers===
[[File:Electrostatic speaker.gif|thumbnail|The basic design of an electrostatic speaker]]
Electrostatic speakers also use electromagnetism, but in an entirely different way. A pair of conductive plates are placed on either side of a flat diaphragm, with a narrow gap in between them. The plates are then charged, so that the diaphragm has a positive charge on one side, and a negative charge on the other. Now, the audio signal is run through the suspended diaphragm. As the audio signal flows, the diaphragm is rapidly cycled between a positive and negative charge. Opposite charges attract, so while charged negative, it pulls towards the positive plate, and while charged positive, it pulls towards the negative plate. This process takes place so rapidly that high-frequency sound is produced. In fact, this system tends to respond more quickly than the traditional dynamic speaker, which can be useful in some situations.<ref name="howstuffworks11">http://electronics.howstuffworks.com/speaker11.htm Retrieved September 30, 2016</ref>
Electrostatic speakers also use electromagnetism, but in an entirely different way. A pair of conductive plates are placed on either side of a flat diaphragm, with a narrow gap in between them. The plates are then charged, so that the diaphragm has a positive charge on one side, and a negative charge on the other. Now, the audio signal is run through the suspended diaphragm. As the audio signal flows, the diaphragm is rapidly cycled between a positive and negative charge. Opposite charges attract, so while charged negative, it pulls towards the positive plate, and while charged positive, it pulls towards the negative plate. This process takes place so rapidly that high-frequency sound is produced. In fact, this system tends to respond more quickly than the traditional dynamic speaker, which can be useful in some situations.<ref name="howstuffworks11">http://electronics.howstuffworks.com/speaker11.htm Retrieved September 30, 2016</ref>