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.

 

Body Type Transistor Hearing Aids

Zenith "Dynamic Range" Transistor (Body) Hearing Aid

The Zenith "Dynamic Range" Transistor Hearing Aid was manufactured by the Hearing Aid Division of the Zenith Radio Corp. in 1971. It was an 8-transistor aid.

The Zenith "Dynamic Range" measured 2˝" x 1⅝" x 15/16" thick, and weighed 2 oz. with battery. The case has a gold-colored anodized aluminum front and a tan-colored plastic back over a dark brown chassis.

The horizontal rectangular microphone grill was along the top front of the hearing aid, and just below it was the wire pocket clip.

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Top view of the Zenith "Dynamic Range" showing the 1 to 6 volume control/on-off switch (top left) and the 3 position "M" (microphone), "MT" (microphone and t-coil at the same time) and "T" (t-coil) switch (top right).
 

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The left side of the Zenith "Dynamic Range" showing the 3-pin receiver cord jack (center).

 

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Rear view of the Zenith "Dynamic Range" hearing aid showing the battery door partially opened from the bottom of the case.

The Zenith "Dynamic Range" took an "N" size 1.4 volt No. 401 mercury battery.

 

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Rear view of the Zenith "Dynamic Range" hearing aid.

 

 

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