On-line 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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General Info

Non-Electric

Carbon

Vacuum Tube

Transistor (Body)

Transistor (Ear)

Miscellaneous

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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.

Conversation Tubes

The Vibraphone

This 38 inch conversation tube was listed in the 1922 Montgomery Ward catalogue as being like a conversation tube, but with an internal metal diaphragm inside to intensify the sound waves.

It came in two models. This more expensive silk one sold for $3.29.

The 2.25 inch bell opening is made of metal and the ear piece is hard rubber.

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The Vibraphone at the right is the cheaper mohair model. It sold for $2.85.

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A different, but similar conversation tube covered with multi-colored woven fabric.

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Here is the ad for the Vibraphone from Montgomery Ward's 1922 catalogue.

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