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.

 

Transistor (Body) Hearing Aids

Audivox Model 74-3 "Petite" Transistor (Body) Hearing Aid

The Audivox Model 74-3 "Petite" transistor body hearing aid was made by Audivox, Inc. of Boston, MA in 1956.

This hearing aid had 3 transistors and measured 1⅝" high x 1 1/16" wide x 7/16" thick (4.2 x 2.7 x 1.2 cm) and weighed 1.0 oz. (28 g).

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Front view of the Audivox Model 74-3 "Petite" transistor body hearing aid showing its chrome front. Note the 4-point star microphone grill (lower center) surrounded by a gold-colored 8-point starburst.

 

 

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The Audivox Model 74-3 "Petite" transistor body hearing aid was petite for sure. You can see just how small it was when seen beside it's receiver and ear mold.

 

 

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Top view of the Audivox Model 74-3 "Petite" transistor body hearing aid showing the on-off switch (left), the battery door below it, and the volume control wheel (right).

The volume control wheel was unusual in that it was set down from the top and recessed.

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Close-up of the top right corner of the Audivox Model 74-3 "Petite" transistor body hearing aid showing the on-off switch and the white "on" dot on the back of the battery compartment door.

 

 

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Rear view of the Audivox Model 74-3 "Petite" transistor body hearing aid showing the manufacturer's information—"Audivox, Successor to Western Electric Hearing Aid Div." (lower center).

 

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Close-up of the top rear of the Audivox Model 74-3 "Petite" transistor body hearing aid showing the model (Petite) engraved into the nameplate.

 

 

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Bottom view of the Audivox Model 74-3 "Petite" transistor body hearing aid showing the serial number (M3027). To the left is one of the two receiver cord jacks.

 

 

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Top rear corner view of the battery compartment of the Audivox Model 74-3 "Petite" transistor body hearing aid showing how the battery compartment door swung down and out from the top.

 

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Bottom view of the battery compartment of the Audivox Model 74-3 "Petite" transistor body hearing aid showing the No. 400 battery in place.

This aid used a 1.4 mercury battery such as this Eveready E400 battery.

 

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View of the bottom left corner of the Audivox Model 74-3 "Petite" transistor body hearing aid showing not one, but two, receiver cord jacks. This uncommon arrangement allowed a person to wear a receiver in each ear at the same time.

The two pins on the receiver cord plug were of the same size so you could plug it in any way you wanted to.
 

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Left side view of the Audivox Model 74-3 "Petite" transistor body hearing aid showing the receiver cord plugged into the body.

 

 

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Front view of the Audivox Model 74-3 "Petite" transistor body hearing aid receiver showing the "Audivox" name on the receiver (bottom), the part number—TB 6H (right) and "Made in USA" (top).  The ear mold snapped onto the nubbin in the center.
 

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Close-up of the back of the Audivox Model 74-3 "Petite" transistor body hearing aid receiver. The receiver cord is plugged in (left).

 

 

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Side view of the Audivox Model 74-3 "Petite" transistor body hearing aid receiver showing the receiver cord plug (left) and 2-holed jack on the bottom of the receiver. Both holes are the same size so you could put the plug in either way.

 

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Close-up view of the Audivox Model 74-3 "Petite" transistor body hearing aid receiver and ear mold shown unsnapped.

 

 

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Close-up view of the Audivox Model 74-3 "Petite" transistor body hearing aid receiver and ear mold shown snapped together.

 

 

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The Audivox Model 74-3 "Petite" transistor body hearing aid in its original leather carrying case.

 

 

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Outside view of the Audivox Model 74-3 "Petite" transistor body hearing aid carrying case.

 

 

 

 

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