electromagnetic speaker
Quick Summary
An electromagnetic speaker, also known as an electrodynamic speaker or dynamic speaker, is a type of electromechanical transducer that converts electrical signals into sound waves. It operates using a voice coil attached to a diaphragm. When an electrical current flows through the coil, it moves within the field of a permanent magnet, causing the diaphragm to vibrate. This vibration creates pressure waves in the air, which we perceive as sound.12
Most loudspeakers are of this electromagnetic variety. To reproduce sound effectively, especially at low frequencies, a larger cone is needed. However, achieving good high-frequency response with the same speaker is challenging due to the mass of the coil and cone. Loudspeakers are typically housed in enclosures to prevent sound waves from the front and rear from canceling each other out.1
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