Acoustic equivalent circuit

An equivalent circuit of a speaker mounted in a sealed enclosure in acoustic domain is presented below with the following color conventions:

  • Green: electrical part

  • Black: mechanical part

  • Red: radiation impedance (front surface)

  • Blue: sealed enclosure (rear surface)

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For a "fairly large" enclosure, the discontinuity masses in the front and in the back of a membrane are very close .

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