Hugh Hetherington Hearing Aid Museum
Hugh Hetherington Hearing Aid Museum

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.

 

Body Type Transistor Hearing Aids

Maico Model BX "Universal II" Transistor (Body) Hearing Aid

The Maico Model BX "Universal II" transistor body hearing aid was manufactured by Maico Electronics, Inc. of Minneapolis, MN in 1967.  The name "Maico" was derived from the initials of the Medical Acoustic Instrument Company.

The Model BX was a modification of the Model AX produced in 1961. It had a blue plastic front and a stainless steel back. It measured 2 1/16" x 1 7/16" x 9/16" thick (5.2 x 3.6 x 1.4 cm) and weighed 1.0 oz. (30 g) without the battery.

The cord, receiver (earpiece) and ear molrd are missing.

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Front view of the Maico Model BX "Universal II" transistor body hearing aid showing the keystone-shaped microphone grill with the Maico logo in the center.

This aid was quite small for the time. The dark blue front was also very uncommon in hearing aids.

 

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Top view of the Maico Model BX "Universal II" transistor body hearing aid showing the MTO lever (left) the 2-pronged receiver cord jack (center) and the volume control wheel (right).
 

 

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Close-up view of the top left corner of the Maico Model BX "Universal II" transistor body hearing aid showing the 3-position MTO switch—"M" (microphone), "T" (t-coil) and "O" (off).

 

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View of the right side of the Maico Model BX "Universal II" transistor body hearing aid.

 

 

 

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View of the left side of the Maico Model BX "Universal II" transistor body hearing aid showing the serial number—19785 (lower left) .

The hole to the right of center was for the wire pocket clip (missing).

 

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Rear view of the Maico Model BX "Universal II" transistor body hearing aid showing the chrome back and the battery compartment door along the bottom.

 

 

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View of the Maico Model BX "Universal II" transistor body hearing aid showing the battery compartment door opened.

Note the small, sliding, white switch at the rear of the battery compartment and the legend for this switch on the lid (top left). This was essentially a tone control—"HC" (high cut), "N" (normal) & "LC" (low cut). This sets the output to cut the high frequencies, no change, or cut the low frequencies depending on the kind of hearing loss the person had.

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View looking down into the battery compartment of the Maico Model BX "Universal II" transistor body hearing aid.

 

 

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The Maico Model BX "Universal II" transistor body hearing aid used a 1.4 volt "N"-sized No. 401 mercury battery such as the Duracell RM-401H.

 

 

 

 

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