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What is the maximum theoretical efficiency of an over-ear headphone?

Discussion in 'Sound Science' started by AutumnCrown, Sep 20, 2018.
  1. AutumnCrown
    If all of the electrical power was converted into sound energy, how would that headphone measure, efficiency-wise (assuming a reasonable but arbitrary distance from ears)?
     
  2. 71 dB
    Maybe 120 dB/mW.
     
    AutumnCrown likes this.

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