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Power For Vox Humana Tremolo Unit?

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    Power For Vox Humana Tremolo Unit?

    How does the Vox Humana rotating vane get its power?

    Is it coupled to the pedals?

    Just curious...
    Hal

    #2
    The vane type is vacuum operated. My Kimbal has a 3/8" or so hole in the main air box, and the V.H. sits atop it.
    -- I'm Lamar -- 1967 Allen TC-4 Project (forum thread)
    -- 1899 Kimball Parlor Organ (forum thread)
    -- 1999 Rodgers W5000C and Hauptwerk - spare W5000C for spares
    -- Conn 643 Theater - Hammond M3 and E-112 - Roland RD300nx stage piano
    -- Public domain hymn search: https://songselect.ccli.com/search/r...t=publicdomain

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      #3
      Hal,

      When the Vox Humana stop is pulled, it opens a small leather flap on the wheel of the Vox Humana mechanism is opened, thereby allowing air to pass through. The air passing across provides the power.

      Michael
      Way too many organs to list, but I do have 5 Allens:
      • MOS-2 Model 505-B / ADC-4300-DK / ADC-5400 / ADC-6000 (Symphony) / ADC-8000DKC
      • Lowrey Heritage (DSO-1)
      • 9 Pump Organs, 1 Pipe Organ & 4 Pianos

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        #4
        Thanks, George Wright and E. Power Biggs!

        I should have realized that the vacuum system is stored energy, and just needs to be tapped!

        HiDesertHal

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          #5
          Just solved another mystery for me on the Vox Humana stop.

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          • myorgan
            myorgan commented
            Editing a comment
            Keep in mind we're only discussing pump/reed organs. On a theatre or classical organ, the Vox Humana is an entirely different stop.

            Michael

          #6
          For a short time in the 1870's, Estey used a clockwork for their VH that was wound via a third treadle.

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