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CLIP 6620

How does a loudspeaker work?

How does a loudspeaker work?
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Key Info
  • How does a loudspeaker work?
  • Duration: 03:43
  • Engineers show us the key components in a loudspeaker and explain how it works. A speaker consists of a number of constituent parts including the drive units, the crossover circuit, the cabinet, the tweeter, the mid-range and the woofer. The crossover filter feeds different frequencies to the appropriate drive unit. In each drive unit the signal makes a coil vibrate in a magnetic field, which moves a cone to produce a sound. The cabinet is an essential component in producing the final sound. We see how the speakers are tested before being despatched.
  • Subject:

    Engineering

       Topic:

    Discovering Engineering Technology

  • Keywords: hi-fi, frequency, audio, cabinet, copper, EngineeringWorld, EngineeringWorld1
Ideas for use in class
  • Illustrating product investigation - how an everyday object works and is made. Can be used to illustrate the use of electrical and mechanical components, and electrical circuits and systems. The crossover is an excellent example of an analogue circuit. It can also be used to highlight the variety of career paths open to engineering students.
Background details
  • Clip language : English
  • Aspect ratio : 16x9

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