Beltone Mono-pac Model C "Concerto" Transistor (Body) Hearing Aid
The Beltone Mono-pac Model C "Concerto" was produced by the Beltone Electronics Corp. of Chicago, IL
in 1953.
It measured 2⅞” by 2” by ⅝” and weighed 3 oz including the battery. It
used 3 transistors.
The case was chrome front and back over a plastic
chassis—visible on all sides. Pocket clips are on the front near each
side.
The square microphone grill (top right) incorporates a lyre design.
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Top view of the Beltone Mono-pac Model C showing the volume
control/on-off switch (top left), 2-position tone control
(labeled on the back as "1" and "2") (top right) and the receiver cord jack (center).
Note this version has a dark navy blue plastic chassis. |
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Rear view of a second version of the Model C showing a black plastic
chassis instead of the navy blue (above).
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Bottom view of the Beltone Mono-pac Model C transistorized body hearing
aid showing the location of the serial number (right).
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Rear view of the Model C showing the make and model engraved in the case "Beltone
MONO-PAC Model C". Note the green dot (center). Serial number
begins with 75, so is a later version that the one shown below.
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Rear view of a second version of the Model C showing there are two
dots—the right one is green and the left one is basically black. Serial number
begins with
74 so obviously is a bit earlier version than the above single green dot
aid. |
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Rear view of a third version of the Model C showing the make and model engraved in the case "Beltone
MONO-PAC Model C". Note the yellow dot (center). Serial number
begins with
72 so obviously is an earlier version than the above 2 are. |
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View of the battery compartment of the Beltone Mono-pac Model C showing
the way to position the battery for correct polarity. The
battery compartment door is hinged at the top and swings upward.
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View of the inside of the lid of the battery compartment door of the Beltone Mono-pac
Model C showing the instructions for inserting the battery correctly.
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View of the battery compartment of the Beltone Mono-pac Model C showing the
battery in place. It used an
E401E
(Type "N") 1.4 volt mercury battery.
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The Beltone Mono-pac Model C in its original case. |
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Outside view of the original case of the Beltone Mono-pac Model C.
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