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The Hearing Aid Museum |
Hearing Aids of all types—Ear
Trumpets, Carbon Hearing Aids, Vacuum Tube Hearing Aids,
Transistor Hearing Aids, Body Hearing Aids, Eyeglass Hearing
Aids and much more! |
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Click on the "General
Information" button (top button above) for an overview and general
information on this category of hearing aid. |
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Body Type Transistor Hearing Aids |
Maico Model AC Transistor (Body) Hearing Aid
The Maico Model AC was manufactured by Maico Electronics, Inc. of
Minneapolis, MN in 1957. The name "Maico" was derived from the
initials of the Medical Acoustic Instrument Company.
The Model AC was a 5-transistor hearing aid with a T-coil. It had a
cream plastic case with a band of
stainless steel trim. It measured 2⅝" x 2" x⅝" thick.
The cord and receiver (earpiece) are shown to the right. An ear mold
(not shown) needs to be snapped to the receiver.
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Click picture for larger view |
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Top view of the Model AC showing the volume control (left), microphone
grill (center) and T-coil switch (right). (The 3-position switch
(labeled "T" (t-coil), "M" (microphone) and "V" (voice?) is shown in the
"V" position.) The jack (2 holes) above the T-coil switch
are where you plugged in the receiver (earpiece) cord.
Notice that the microphone was located on the top, not on the front as
was more commonly done with body aids. |
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Click picture for larger view |
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The Maico Model AC used two 1.4 volt Number 401 mercury batteries. Note that the Model AC-1 (not shown) only used 1 battery.
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