Siemens Model 40 "Euroton" Transistor (Body)
Hearing Aid
The Siemens Model 40 (Euroton) transistor hearing aid was
manufactured by/for Siemens A.G. of Germany in 1975 although it was physically
made in Brazil.
It measured 2 13/16" x 1¾" x ¾" (7.2 x 4.5 x 1.9 cm) and weighed 2½ oz. (70 g)
with battery.
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Top view of the Siemens Model 40 (Euroton) transistor hearing aid showing the
1-9 volume control on the left, the square microphone grill in the
middle and the MT (microphone/t-coil together, M (microphone only), T
(t-coil only) and O (off switch) on the right. |
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The Siemens Model 40 (Euroton) transistor hearing aid showing the battery compartment
which swung open to the rear from the left side. This hearing aid used
a standard AA size 1½ volt battery.
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Bottom view of the Siemens Model 40 (Euroton) transistor hearing aid showing the
the model number (40) and place of manufacture (Brazil). The adjusting
screw was probably for setting the tone to the wearer's needs.
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The receiver and cord of the Siemens Model 40 (Euroton) transistor
hearing aid. Note that the ear tip is a stock tip and not a specifically
molded ear mold that was typically used on hearing aids of the day. The
cord had a two-pronged plug at each end.
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