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.


Eyeglass Style Transistor Hearing Aids: 1954-1990

Acousticon A-230 Eyeglass Hearing Aid

The Acousticon model A-230 is an early eyeglass hearing aid. It was manufactured by Dictograph Products, Inc. of New York around 1955.

This was an unusual hearing aid in that the hearing aid electronics were enclosed in two sections that plugged onto the ends of the eyeglass arms. There were 3 conductors in a cable running down the arms and across the bridge of the glasses to connect the two sides.

You can see the wire going across the bridge in the top picture.

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Side view of the Acousticon Model A-230 eyeglass hearing aid showing the thin frames and temple-pieces with the large electronics modules at the tips of the temple-pieces.


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The microphone port was in the middle of the tip on the right temple piece (left). The end of the volume control lever is visible at the very bottom below the microphone port.

The tip of the left temple piece shows the white nubbin onto which the tubing for the ear mold was connected. (bottom right). The round "button" in the center of the left temple tip is how you push the battery compartment out on the other side.

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The battery compartment was a slide out drawer on the end of the left temple piece into which was inserted a 450 size mercury cell.


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The components for the hearing aid amplifier are contained in the unit on the right temple side, some of which are visible through the clear plastic cover. The microphone opening is on the other side. The volume control is the sliding lever on the bottom of this unit.


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The left temple piece contained the receiver unit that used a link (tube) connected to an ear mold to deliver the sound to the ear.


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Possibly a unique feature of the Acousticon A-230 was that the hearing aid tips could be unplugged from the temple pieces and replaced with dummy tips that came with the eyeglasses. That way the eyeglasses could be used as regular glasses when the hearing aid wasn't needed. The dummy tips are shown in the picture at the right.


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Here you can see the two alternatives —either the dummy tip or the hearing aid tip (bottom right). The temple piece on the left already has the dummy tip plugged in.


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The Acousticon A-230 in its original case.



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