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

Philco? (Gold) Transistor (Body) Hearing Aid

This hearing aid is totally unmarked, but it is obviously very similar in size, shape and design to other Philco hearing aids. It is quite similar to the Philco Mark II hearing aid of 1958, which was the second of two transistor body aids made by Philco of Philadelphia, PA.

This hearing aid was quite small for the time and measured 1¾" x 1⅝" x ½" and weighed 1¼ oz. without the battery.

It had a gold-colored anodized aluminum case and contained 3 transistors. The microphone sat behind the 4 "star bursts" grill (lower left front).

The front cover design was different from the Philco Mark II. The Mark II had a "ribbed" design on the left and each microphone opening was three small slots rather than the design shown here.

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Back

 

Inside view of the Philco? (gold) with the front cover removed showing the circuitry. Note the large microphone in the bottom left quadrant.

 

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Top view of the Philco? (gold) showing the on-off/1-6 position volume control (left), the receiver cord jack (center) and the two-position (High-Low) tone control (right).

The Philco Mark II had off-white controls rather than the black ones of this hearing aid.

 

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The Philco? (gold) had a somewhat unusual plug for the receiver cord. Instead of the two pin plug that was common (and used at the receiver end), it used what looks like a standard audio plug, but it is slightly bigger—just a bit over ⅛" in diameter.

 

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The back of the Philco? (gold). The control functions are engraved on the back of the case behind the controls to which they refer. In the upper left corner is inscribed "Lo-Tone-Hi" and in the upper right corner, "Off-Vol-On".

Note that nowhere on this hearing aid is there any name or model number. It is obviously a Philco product as it is so similar to the Philco Mark II. In addition, the Philco Mark II was gold-colored, suggesting that this is also a version of the Mark II. This particular model may have been a "no name" brand that was sold by other vendors.

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The battery door on the Philco (gold) swung up and to the right from the bottom right corner. This hearing aid used a 625 battery.

The clip across the front of the hearing aid could be used as a tie clip with the hearing aid itself hidden under the tie. (One wonders how well the microphone would pick up sounds with the tie covering the microphone grill.)



 

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