High Efficiency Speaker Asylum

• RE: "resistive load that is the air." - tomservo 06:50:18 06/25/23 (1)
  In Reply to: RE: "resistive load that is the air." posted by claudej1@aol.com on June 22, 2023 at 13:00:36

  Yes, the same terms come into play too, Rho / density per cu/mtr and C the speed of sound.
  
  The impedance per area are HUGELY different, a PZT ceramic itself is a pretty good impedance match to water's radiation resistance but is close to useless as a direct radiator in air.
  
  In the levitation sources i made a stack of 4 PZT elements and that drove a resonant titanium transformer and flexural radiator that had a Q of around 300-500 and that made an efficient source. One could levitate a styrofoam ball at 10Watts input about 160dB @ 22KHz.
  Tom
  

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  • RE: "resistive load that is the air." - claudej1@aol.com 13:02:58 06/25/23 (0)
    In Reply to: RE: "resistive load that is the air." posted by tomservo on June 25, 2023 at 06:50:18

    sounds like loads of fun outside of music
    

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