Oticon Model 371 LDC Transistor (Body) Hearing Aid
The Oticon Model 371 LDC was manufactured by Oticon A/S
of Denmark in 1971.
This body aid measured 2 7/16" x 1⅞" x ¾"
(6.2 x 4.8 x 1.9 cm) and weighed 1.6 oz.
(46 g) without the battery.
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Top view of the Oticon 371 LDC showing the "M" (microphone),
"MT" (microphone & t-coil) and "T" (t-coil) switch (bottom
right), the
1-9 volume control wheel (top right), the "H" (high), "N" (normal) and "L"
(low) tone switch (bottom left) and the On (+) -Off (0) switch (top
left). The
microphone grill is in the center.
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Rear view of the Oticon 371 LDC showing the model 371 LDC (near bottom
center) and below it the serial number (361452) set in the "window".
To the left of the model number is a yellow dot (purpose unknown).
Above the model number are two small adjusting holes. The left is
labeled "0" and the right "A".
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Bottom view of the Oticon 371 LDC showing the battery
compartment. This hearing aid took a 1.4 volt mercury size 401 or "N" battery.
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The battery compartment cover just snapped off to change the battery. |
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The Oticon 371 LDC came in two versions. This one had an aluminum case
with dark gray plastic top and bottom. The wire pocket clip is higher
than the version below.
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This version had a light gray plastic case with dark gray plastic top
and bottom. The wire pocket clip is not as high as the above version. |
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Side view of the Oticon 371 LDC showing how the receiver cord plugged
into the two-hole jack on the left side.
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Close-up of the receiver of the Oticon 371 LDC showing the receiver cord
plug and two-hole jack on the receiver.
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The ear mold (right) snapped onto the nubbin in the center of the
receiver (left). |
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This hearing aid came with a "Y" cord and two receivers so both ears
could benefit from amplified sound. Unlike most "Y" cords, this "Y" cord
was unusual in that it had a variable balance control on the "Y" to
adjust the amount of volume going to each ear. This was important if
each ear had a different degree of hearing loss.
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The Oticon 371 LDC in its original case. Note the two receivers/ear
molds and "Y" cord. |
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Outside view of the original case of the Oticon 371 LDC hearing aid.
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