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-905 "Stylear" Eyeglass Hearing Aid

The Acousticon model A-905 "Stylear" eyeglass hearing aid was manufactured by Dictograph Products, Inc. of New York in 1962.

In this case, the left temple piece contains the hearing aid. The right temple piece is a dummy.

This hearing aid had 3 transistors.

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Back

 
The temple pieces just pull out from the stubs on the eyeglass frames, making changing them a "snap".


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The name plate showing the make and model number. Behind this plate is the battery compartment and the microphone. The battery door is shown swung out (left). This aid used a 675 battery.

 

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Outside view of the Acousticon A-905. The temple piece has been removed from the eyeglass frames.

An ear mold and short plastic tube (not shown) fitted over the nubbin (bottom center).


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View of the back of the Acousticon A-905 showing the two metal cover plates that provide access to the electronics inside.

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The inside of the Acousticon A-905 with the cover plates removed showing the battery compartment (left) and the microphone beside it in the behind-the-ear compartment.

The ahead-of-the-ear compartment of the temple piece contained the receiver (center, above the nubbin), the volume control to its right and the electronics (far right).
 

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The underside of the active temple piece showing the serial number—113007 (left), volume control (center) and the nubbin for attaching the ear mold tubing (right). The battery door acted as the on-off switch.

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The microphone port (left of center) is on the outside of the behind-the-ear portion of the temple piece. The "V" shaped ridge or "spoiler" surrounding the microphone port indentation was designed to reduce wind noise.

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The long cover plate is swung back to reveal the inside view of the dummy temple piece. Notice the block of "concrete" (center) used to make the dummy temple piece the same weight as the one containing the hearing aid. Without batteries, both temple pieces weigh the same at ¾ oz. each.

The dummy temple piece looked exactly the same as the real temple piece right down to having the same name plate. The only visible difference was the lack of a volume control and ear tube nubbin.

It also had a battery compartment to used to store a spare battery.

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Front view of the Acousticon A-905 in the folded position.

 

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Rear view of the Acousticon A-905 in folded position.

 

Here is the 4-page Instruction booklet that came with this hearing aid.

 


 

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