Hugh Hetherington Hearing Aid Museum
Hugh Hetherington Hearing Aid Museum

The Hearing Aid Museum

Hearing Aids of all types—Ear Trumpets, Carbon Hearing Aids, Vacuum Tube Hearing Aids, Transistor Hearing Aids, Body Hearing Aids, Eyeglass Hearing Aids and much more!

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Click on the "General Information" button (top button above) for an overview and general information on this category of hearing aid.

 

Carbon Hearing Aids: 1900-1939

Tiny Sonotone Carbon Hearing Aid

The Tiny Sonotone carbon hearing aid was manufactured in 1930 by Sonotone International, Inc. of New York.

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Front view of the Tiny Sonotone carbon microphone showing the pattern of the mic grill—12 holes in the outer ring, 6 holes in the middle ring and one hole in the center. The microphone measured 2¼" in diameter by 11/16" thick.

The microphone plugged directly into a battery such as the Sonotone Model X42 3-volt battery.


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Rear view of the Tiny Sonotone carbon microphone. Under the pocket clip (top center) are the words "Sonotone Corp, New York" and just below the center, the serial number 20111.

 

 

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The volume control/on-off switch shown in the mid volume range.

 

 

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The earphone plugs of the Tiny Sonotone. (Unfortunately, the earphone is missing.)

 

 


 

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