- Speaker is an electroacoustic transducer, which converts an electrical audio signal into a corresponding sound.
Working:
- In order to translate an electrical signal into an audible sound, speakers contain an electromagnet metal coil which creates a magnetic field when an electric current flows through it.
- This coil behaves like a normal magnet, with one particularly handy property, reversing the direction of the current in the coil flips the poles of the magnet.
- As pulse of electricity pass through the coil of the electromagnet, the direction of its magnetic field is rapidly changed.
- The electromagnet is attached to a cone made of a flexible material such as paper or plastic which amplifies these vibrations, pumping sound waves into the surrounding air and towards your ears.
- They produces sound.
- Long lasting and pretty durable if operated within their intended power levels.
- Used for music, sound reinforcement in theaters and concerts, and in public address systems.
Disadvantages:
- Multiple separately amplified devices require their own power on/off.
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