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    3. how loud is 41 dBa?
    how loud is 41 dBa?

    portable 02 concentrator, how noisy is this?

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    0  Views: 463 Answers: 1 Posted: 13 years ago
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      Comparisons here>>http://www.tlc-direct.co.uk/Technical/Sounds/Decibles.htm


      >>http://www.sengpielaudio.com/TableOfSoundPressureLevels.htm 


      >>https://www.google.com/search?q=how+loud+is+41+dBa&rlz=1C1LENN_enUS508US508&aq=f&oq=how+loud+is+41+dBa&aqs=chrome.0.57j60j62.974&sourceid=chrome&ie=UTF-8


       

      12 years ago. Rating: 6
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