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 Model 50-X [Mod 1] Transistor (Body) Hearing Aid

The Zenith Model 50-X  [Mod 1]transistor hearing aid was manufactured by the Hearing Aid Division of the Zenith Radio Corp. beginning in June, 1956. It was a 4-transistor aid.

The Zenith Model 50-X [Mod 1] hearing aid measured 2⅝" x 1¾" x 11/16" thick (6.6 x 4.5 x 1.7 cm), and weighed 1.9 oz. (56 g) without the battery.  This hearing aid had a shiny, polished aluminum case.
 

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Front view of the Zenith Model 50-X [Mod 1] hearing aid showing the wire pocket clip. The vertical rectangular microphone grill (front center) was skirted by the pocket clip on its sides and bottom.

Note the name "Zenith" across the front near the bottom.

For some reason, Zenith did not designate this version as a sub-model of the 50-X hearing aid although it had several significant changes—namely—the case was polished aluminum case, it had a 4-transistor amplifier, and it had a tone control.

The Zenith Model 50-X [Mod 1] sold for $50.00.

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Top view of the Zenith Model 50-X [Mod 1] hearing aid showing the  "no numbers" volume control (left), the receiver cord jack (center) and the rather unusual 2-position (high or low) tone control/on-off switch (right).


 

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Top view of the Zenith Model 50-X [Mod 1] hearing aid showing the 2-pronged receiver cord plug and jack.



 

 

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Side view of the Zenith 50-X [Mod 1] hearing aid. The spring-loaded pocket clip fits into holes on each side. You could pull the clip ends out and then fit it on the back of the aid instead of the front if you wanted to.

 

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Rear view of the Zenith Model 50-X [Mod 1] hearing aid. Engraved into the back it reads "Zenith", "50-X" and "the royalty of hearing".

At the top left is engraved "LOUDER" and at the top right "HIGH, LOW & OFF".

Note the serial number (1206512) in the center of the battery compartment door (bottom).

 

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View of the battery compartment of the Zenith 50-X [Mod 1] hearing aid. The battery door swung up from the bottom.

 

 

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View of the battery compartment of the Zenith 50-X  [Mod 1]hearing aid showing the battery in place.

The Zenith Model 50-X [Mod 1] took an "N" size 1.4 volt No. 401 mercury battery such as this Mallory RM-401H battery.

 

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Rear view of the receiver of the Zenith Model 50-X [Mod 1] hearing aid with the receiver cord plugged in.

This receiver was smaller than the regular-sized receiver, namely 11/16" (1.8 cm) rather than the normal size of 13/16" (2.1 cm).


 

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Side view of the receiver of the Zenith Model 50-X [Mod 1] hearing aid showing the two-pronged plug and socket.

 


 

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Front view of the receiver of the Zenith Model 50-X [Mod 1] hearing aid showing the clear hard plastic ear mold that snapped onto the receiver's nubbin.

 


 

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Side view of the receiver of the Zenith Model 50-X [Mod 1] hearing aid with the receiver snapped on to the receiver.

 

 

 

 

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