Medicor Model MB-24xx Transistor (Body) Hearing Aid
The Medicor Model MB-24xx Transistor (Body) Hearing Aid was
manufactured by Medicor Müvek of Budapest, Hungary in 1973.
There is no model number on this hearing aid, but it looks similar to
other hearing aids in the MB-2400 series such as the MB-2410 and
MB-2411. Since it is newer, presumably it would have a model number
greater than 2411. I here designate it as 24xx until the real model
number is found.
This is probably a 4-transistor hearing aid. It measured 2 9/16" high x 1
13/16" wide x 11/16"
thick (6.6 x 4.6 x 1.7 cm) and weighed 2.2 oz. (60 g) without the
battery.
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Front view of the Medicor Model MB-24xx transistor hearing aid showing
the chrome metal main part of the body with a gray plastic top and
bottom. Note the name "Medicor" at the top right and the wire pocket
clip.
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Top view of the Medicor Model MB-24xx transistor hearing aid showing the
volume control wheel (top left), the "M" (microphone), "T" (t-coil) and
"O" (off) switch (bottom left), the microphone grill (center right) and
the 3-position tone control lever (right). Note: the volume control
wheel is marked with a black line at its minimum position a double black
line at its middle position (shown) and a triple black line at its
loudest position. |
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Rear view of the Medicor Model MB-24xx transistor hearing aid showing
the letters "AVC" (automatic volume control) at the top, and a hole with
an adjusting screw (center left). The function of this screw is unknown.
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Right side view of the Medicor Model MB-24xx transistor hearing aid showing
the receiver cord jack.
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Close-up side view of the Medicor Model MB-24xx transistor hearing aid showing
the receiver cord plug and jack. Note that the left pin is larger than
the right pin so in could only be plugged in the correct way.
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Right side view of the Medicor Model MB-24xx transistor hearing aid showing
the receiver cord plugged into the jack.
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Bottom view of the Medicor Model MB-24xx transistor hearing aid showing
how the battery compartment cover pulled off to reveal the battery
compartment.
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Close-up view of the bottom of the Medicor Model MB-24xx transistor hearing aid showing
the battery compartment with the serial number at the bottom. The
first two digits of the serial number "73" indicate the year of
manufacture—namely 1973.
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View of the battery compartment of the Medicor Model MB-24xx transistor hearing aid showing
the 1.4 volt mercury battery in place such as this
Duracell RM401H battery. Note the "+" at the right side indicating
that end as the positive terminal.
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Bottom view of the Medicor Model MB-24xx transistor hearing aid showing
the spring clips that hold the battery compartment door in place when
fully pushed together.
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Side view of the receiver of the Medicor Model MB-24xx transistor hearing aid showing
the pins inserted into the receiver jack. Most hearing aids of this era
used a two pin plug rather than discrete pins.
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Rear view of the receiver of the Medicor Model MB-24xx transistor hearing aid.
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Front view of the receiver of the Medicor Model MB-24xx transistor hearing aid.
At the top is the number "62" and at the bottom the number "412". At the
right is a "star" or snowflake symbol.
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View of the front of the receiver of the Medicor Model MB-24xx transistor hearing aid showing
the ear mold snapped apart. The ear mold snapped to the nubbin in the
center of the receiver.
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The Medicor Model MB-24xx transistor hearing aid in its original carrying
case.
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Outside view of the original carrying case for the Medicor Model MB-24xx
transistor hearing aid. The case measured 4 5/16" x 2⅞" x 1⅛" (10.9 x
7.4 x
2.9 cm).
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Note the Medicor name embossed into the lower right corner of the case of the
Medicor Model MB-24xx transistor hearing aid.
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