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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