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.

 

Vacuum Tube Hearing Aids: 1921-1953

Beltone Mono-pac Model L "Lyric" Vacuum Tube Hearing Aid

The Beltone Mono-pac Model L "Lyric" vacuum tube one-piece hearing aid was  produced by the Beltone Electronics Corp. of Chicago, IL in 1952.

 It measured 2⅝” by 1¾” by ⅞” and weighed 13½ oz including the batteries. It used 3 vacuum tubes.

The case was chrome front and back over a black plastic chassis—visible on all sides. Pocket clip is on the front in the center.

The microphone grill (top right corner) is in the shape of a lyre—fitting with the model name of "Lyric".

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Top view of the Beltone Mono-pac showing the 2-position tone control (labeled on the back as "1" and "2") (center) and the receiver cord jack (left).

 

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View of the left side of the Lyric showing the volume control/on-off switch.

 

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Rear view of the Model L showing the make and model engraved in the case "Beltone MONO-PAC Model L".

Note the green dot on the left side above the hinge.

 

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View of the battery compartment of the Beltone Mono-pac Model L showing the batteries in place. The "A" battery (center) is an RM-1 1.4 volt mercury battery, while the "B" battery is a 15 volt No. 504 E.

The battery compartment door is hinged at the top and swings upward.

 

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The Beltone Mono-pac Model L "Lyric" in its original case.

 

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Outside view of the original case of the Beltone Mono-pac Model L.

 


 

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