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How to Measure a Voice Coil

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How do Speakers Work?

A speaker converts electrical energy to mechanical/acoustical energy. It uses a coil of wire, which acts as an electromagnet, set inside of a magnetic gap of a permanent magnet. The following demo shows the main components of a woofer. Holding your cursor over the individual buttons will highlight the respective component. Clicking on the button will bring up a brief description. 

Continues @ http://www.bcae1.com/speaker.htm

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