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.

 

Behind-the-Ear (BTE) Transistor Hearing Aids

Nicolet "Phoenix" Behind-the-Ear Digital Hearing Aid

The Nicolet "Phoenix" behind-the-ear digital hearing aid was the world's first digital hearing aid. It was manufactured by the Nicolet Instrument Corporation located in Madison, Wisconsin in 1987.

Project "Phoenix" to build this aid was a $20 million joint venture founded in 1984 between the University of Wisconsin and the Nicolet Instrument Corporation to develop a programmable digital hearing aid.

This hearing aid/processor including batteries surprisingly just weighed 3.4 oz. (96 g.).

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Front view of the pocket processor of the Nicolet "Phoenix" behind-the-ear digital hearing aid. This aid was unique in that it consisted of two parts—a large pocket processor and what looked like a behind-the-ear hearing aid. These two units were connected by a cord.

The reason for the large pocket processor is because they hadn't yet miniaturized all the parts so they'd fit in a BTE hearing aid case.

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Close-up of the front of the pocket processor of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the three program buttons. The dots at the top left of the buttons indicated buttons 1, 2 and 3.

These buttons could be programmed to process sounds in various ways.

 

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Top view of the pocket processor of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing a two-position switch (left) and the plug for the BTE cord (right).

 

 

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Close-up of the top left corner of the pocket processor of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the two position switch in its left (non-blue) position. The function of this switch is unknown, possibly used in conjunction with the program buttons for changing programs.

 

 

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Close-up of the top left corner of the pocket processor of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the two position switch in its right (blue) position.

 

 

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Close-up view of the top right corner of the pocket processor of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the plug and socket for the cord connecting the pocket processor with the BTE hearing aid.

Notice that the plug and socket both have a flat side so you could only plug it in the right way.

 

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Close-up view of the top right corner of the pocket processor of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the BTE cord plugged into the socket on the pocket processor.

 

 

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Rear view of the pocket processor of the Nicolet "Phoenix" behind-the-ear digital hearing aid.

 

 

 

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Rear view of the pocket processor of the Nicolet "Phoenix" behind-the-ear digital hearing aid with the center piece removed (left).

This piece slid tightly into the grooves in the raised "rails" and snapped in place. It was likely you tied a lanyard around the two "posts" at the top of the removable piece if you were going to wear it around your neck.

If you just put the pocket processor in your shirt pocket, it doesn't seem to serve any purpose.

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Bottom rear view of the pocket processor of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the name plate with the manufacturer (Nicolet) and model (Phoenix) and the words "Warranty void if label removed". This was because the two screws to take the processor apart are hidden under the label. This way the manufacturer knew the processor hadn't been tampered with.
 

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Bottom view of the Nicolet "Phoenix" pocket processor showing the gray battery holder.

To open the battery compartment, you squeezed the grey ends of the battery holder and pulled it out.

 

 

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Bottom view of the Nicolet "Phoenix" pocket processor showing the gray battery holder being removed from the pocket processor.

 

 

 

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Bottom view of the Nicolet "Phoenix" pocket processor showing the gray battery holder removed from the pocket processor.

 

 

 

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Bottom view of the body processor of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the battery holder removed revealing the empty battery compartment.

 

 

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Close-up of the left end of the battery compartment of the Nicolet "Phoenix" behind-the-ear digital hearing aid body processor. The inscription reads 000-6001-00, Made in U.S.A., Clip side, 8807.

 

 

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Top view of the pulled-out battery holder of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the 3 batteries in place. (Positive terminal side.)

The Nicolet Phoenix used 3 Duracell No. 630 HP (high power) 1.4 volt zinc-air hearing aid  batteries wired in series to give a total of 4.2 volts.

 

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Bottom view of the pulled-out battery holder of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the 3 batteries in place. (Negative terminal side.)


 

 

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Top view of the pulled-out battery holder of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the 3 battery slots. The batteries go in negative side down.

The plastic clips at each end are slightly springy and snap the battery holder in place. You squeeze the clips slightly to pull the battery holder out.

 

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Inside view of the behind-the-ear part of the Nicolet "Phoenix" behind-the-ear digital hearing aid. It used a standard ear mold like other hearing aids of the same vintage.

 

 

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Front view of the BTE part of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the rather unusual rectangular microphone grill right above the ear hook.
 

 

 

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Outside view of the BTE part of the Nicolet "Phoenix" behind-the-ear digital hearing aid.

The BTE unit measured 1⅞" x ⅝" x ⅜" (4.9 x 1e5 x 1.0 cm). The BTE unit as shown weighed 0.2 oz. (6 g.).

 

 

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Close-up of the bottom outside of the BTE part of the  of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the name "Nicolet".

The protrusion below the name is the plug for the BTE cord to connect it to the pocket processor.

 

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Close-up of the bottom of the BTE part of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the BTE cord plugged into the BTE unit.

 

 

 

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Close-up of the bottom of the BTE part of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the BTE cord unplugged from the BTE unit.

Note that the left pin is larger in diameter than the other two pins so you can't plug the cord in the wrong way.

 

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Rear view of the BTE part of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the volume control (left) and M-T switch (center).

 

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Close-up view of the rear of the BTE part of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the on-off/volume control wheel.

Zero is the off position. This off position controls the power to both the BTE unit and the pocket processor. Note: the BTE unit doesn't have any batteries. It gets its power from the pocket processor.

 The wheel has the numbers 1, 2 and 3 indicating increasing volume levels.

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Close-up of the back of the BTE part of the Nicolet "Phoenix" behind-the-ear digital hearing aid showing the three position switch—M - microphone, MT - black dot - microphone and t-coil at the same time?, and T - t-coil only. It is shown with the switch in the MT position.

 

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The Nicolet "Phoenix" behind-the-ear digital hearing aid in its original carrying case.

 

 

 

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Top view of the Nicolet "Phoenix" behind-the-ear digital hearing aid carrying case with the name "Nicolet Phoenix" embossed in gold in the bottom right corner of the case.
 

 

 

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The carrying case of the Nicolet "Phoenix" behind-the-ear digital hearing aid. The case measured 8⅞" x 5½" x 1⅞" (22.5 x 13.7 x 4.7 cm).

 

 

 


 

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