Zenith "Extended Life Power Aid" (ELPA) Transistor (Body) Hearing Aid
The Zenith "Extended Life Power Aid" or "ELPA" transistor hearing aid was manufactured by the
Hearing Aid Division of the Zenith Radio Corp. in 1970.
The Zenith "ELPA" measured 2½" x 1⅝" x ⅝" thick, and
weighed 3 oz. with battery. The case was brushed stainless steel with a
medium brown top and bottom.
The name "ZENITH" and the Zenith crest (to its right) are on the
lower back of the "ELPA".
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Top view of the Zenith "ELPA" showing the 1-7 position volume
control/on-off switch (top left), the square microphone grill (center)
and the 3-position "M" (microphone) "B" (both microphone and
t-coil) and "T" (t-coil) switch
(right).
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The left side of the Zenith "ELPA" showing the 3-pin receiver
cord jack (center). |
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Right side of the "ELPA" showing a small slot (left of center)
marked "BA". It contains a 2-position internal slider switch (set by
screwdriver)—possibly a two-position tone control?
Notice the thumbnail "catch" (right) to open the battery compartment
door.
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Bottom view of the Zenith "ELPA" hearing aid showing the
battery compartment. The battery door was hinged on the bottom right
side. The Zenith
"Sentry" took an "N" size 1.4 volt
No. 401 mercury battery. |
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Bottom view of the Zenith "ELPA" hearing aid showing the
name "ZENITH" and "ELPA".
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Front view of the Zenith "ELPA" showing the large pocket clip
(top half).
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(If a larger picture doesn't appear, you may have to
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