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

Oticon Model E30P Behind-the-Ear (BTE) Transistor Hearing Aid

The Oticon Model E30P BTE hearing aid was manufactured by Oticon A/S of Denmark right around 1984.

This hearing aid measured 1⅝" long x 9/16" wide by ⅜" thick (4.2 x 1.5 x 0.9 cm).

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View of  the front of the Oticon Model E30P BTE hearing aid showing its model no. (E 30 P) and serial number (068048), manufacturer (Oticon) and country of origin (Denmark).

 


 

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Top view of the Oticon Model E30P BTE hearing aid showing the domed microphone port immediately above the ear hook

 


 

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Right side view of the Oticon Model E30P BTE hearing aid. Note, an ear mold (not shown) fitted onto the tip of the ear hook.



 

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Rear view of the Oticon Model E30P BTE hearing aid showing the volume control (top), adjusting screw cover (middle) and cover release slider (to the left of the arrow) and below that the MTO switch for switching between the M - microphone, T - t-coil  and O - off (shown in the O position).


 

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Rear view of the Oticon Model E30P BTE hearing aid showing the adjusting screw cover removed revealing the adjusting screws.

 


 

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Rear view of the Oticon Model E30P BTE hearing aid showing the volume control (top) and green and red adjusting screws.

The 4-position green adjusting screw adjusts to best fit your audiogram. 1 - slight sloping audiogram to 4 - steep ski-slope audiogram. The green screw is shown set to "3" a fairly steep ski-slope loss.

The red adjusting screw is for setting the maximum volume or UCL (uncomfortable level). It ranges from 117 to 132 dB HL (hearing level) showing adjusted to 125 dB HL.

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Close-up view of the bottom of the Oticon Model E30P BTE hearing aid showing the ribs on the battery door (left) so your thumb could easily open the door to change batteries.

 


 

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Close-up view of the bottom of the Oticon Model E30P BTE hearing aid showing how the battery compartment door swung up from the bottom.

 


 

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Close-up view of the bottom of the Oticon Model E30P BTE hearing aid showing the battery compartment door partially opened with the battery inside.
 


 

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Close-up view of the bottom of the Oticon Model E30P BTE hearing aid showing the battery compartment door fully opened revealing the button battery inside. This hearing aid took a  No. 675 battery.


 

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The Oticon Model E30P BTE hearing aid in its carrying case.

 


 

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Top view of the Oticon Model E30P BTE hearing aid's carrying case.

It measured 1⅝" wide x 3 1/16" deep x 1 1/16" high (6.3 x 7.7 x 2.7 cm).

 


 

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Front view of the Oticon Model E30P BTE hearing aid's carrying case showing the thumb button (bottom center) which you pushed to open the case.

 

 


 

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