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 "Extended Life Power Aid" (ELPA) Transistor (Body) Hearing Aid

The Zenith "Extended Life Power Aid" or "ELPA" transistor hearing aid was manufactured by the Hearing Aid Division of the Zenith Radio Corp. in 1970.

The Zenith "ELPA" measured 2½" x 1⅝" x ⅝" thick, and weighed 3 oz. with battery. The case was brushed stainless steel with a medium brown top and bottom.

The name "ZENITH" and the Zenith crest (to its right) are on the lower back of the "ELPA".

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Top view of the Zenith "ELPA" showing the 1-7 position volume control/on-off switch (top left), the square microphone grill (center) and the 3-position "M" (microphone) "B" (both microphone and t-coil) and "T" (t-coil) switch (right).


 

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

 

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Right side of the "ELPA" showing  a small slot (left of center) marked "BA". It contains a 2-position internal slider switch (set by screwdriver)—possibly a two-position tone control?

Notice the thumbnail "catch" (right) to open the battery compartment door.

 

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Bottom view of the Zenith "ELPA" hearing aid showing the battery compartment. The battery door was hinged on the bottom right side.

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

 

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Bottom view of the Zenith "ELPA" hearing aid showing the name "ZENITH" and "ELPA".
 

 

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Front view of the Zenith "ELPA" showing the large pocket clip (top half).

 

 

 

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