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

Acousticon Model SRB Carbon Hearing Aid

 The Acousticon model SRB was a single microphone carbon hearing aid manufactured between 1910 and 1928 by the General Acoustic Company, which later became Dictograph Products, Inc. It cost $40.00.

The earphone is on the right and the carbon microphone is on the left.

The Acousticon Model SRB was powered by a 3 volt Acousticon No. 2-R zinc-carbon battery.
 

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The reverse view of the Acousticon SRB, showing the back of the earphone (left) and the back of the carbon microphone (right).

The carbon microphone is 3 5/16" in diameter. It featured a 6-step volume control (bottom half). The volume is shown at almost the loudest setting. The metal clip (top center) secured it to the user's clothing.

The on-off switch is on the earphone. There is a sliding bar (going from about 10 o'clock to 2 o'clock through the earphone). The picture shows the shiny on/off push button sticking out  at 2 o'clock (the on position).

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Close-up of the back of the Acousticon SRB carbon microphone showing the model number (SRB) (upper left).

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The Acousticon came with a leather storage case (right).

 

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The inside of the storage case showing the compartments for the various components.
 

 

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The Acousticon SRB came with a small handle that attached to the earphone if you wanted to hold it up to your ear.

 

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The handle unhooked from the earphone for storage, or if you wanted to use the earphone with a headband.

 

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The earphone with the headband attached.

 


 

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