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

Zenith "Vocalizer II" Transistor (Body) Hearing Aid

The Zenith "Vocalizer II" transistor hearing aid was manufactured by the Hearing Aid Division of the Zenith Radio Corp. in 1968.

The Zenith "Vocalizer II" measured 2˝" x 1⅝" x ⅝" thick, (6.4 x 4.2 x 1.6 cm) and weighed 3.1 oz. (90 g) with receiver, ear mold and battery. The case was stainless steel (semi-gloss finish).

There were two versions, the original version and later a modified version (mod). The quick way to tell them apart is the original version had a black plastic top and bottom, while the modified version was had a tan-colored top and bottom.

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Front view of the Zenith "Vocalizer II" showing the Zenith name and to the right of it the Zenith Logo.

The whole case was stainless steel with a semi-gloss finish on the top section and a polished, shiny finish on the bottom section.

 

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Front view of the Zenith "Vocalizer II" (mod) showing the Zenith name and to the right of it the Zenith Logo.

The whole case was stainless steel with a semi-gloss finish.

 

 

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Top view of the Zenith "Vocalizer II" showing the 3-position "M" (microphone) "B" (both microphone & t-coil) and "T" (t-coil) switch (left), the square microphone grill (center) and the 1-7 position  volume control/on-off switch (right).

Note the black top of the Zenith "Vocalizer II" original version.

Also note that the pocket clip is on the back and that if you were looking down at the top of the hearing aid clipped to your pocket, all the letters would be upside down from your point of view as shown in the picture at the right

 

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Top view of the Zenith "Vocalizer II" (mod) showing the 1-7 position  volume control/on-off switch (left), the square microphone grill (center) and the 3-position "M" (microphone) "B" (both microphone & t-coil) and "T" (t-coil) switch (left).

The top of the Zenith "Vocalizer II" (mod) was tan-colored plastic.

Also note that the "insides" of the modified version were mounted in the case reversed so that looking at the top when clipped to a pocket the words are now right side up from your perspective as shown in the picture on the right.

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Side view of the top of the Zenith "Vocalizer II" showing the two rounded plastic tabs at the left and right ends of the case. Presumably, these tabs helped prevent the controls from accidentally being bumped and thus changing the settings.

 

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Rear view of the Zenith "Vocalizer II"  showing the U-shaped pocket clip design.

Note the sales label on the bottom. Obviously, this was a demo unit to show dealers they could have their names on every hearing aid sold. The label reads, "This space reserved for your personalized name plate."

 

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Rear view of the Zenith "Vocalizer II" (mod) showing the solid pocket clip design with a tan-colored plastic-coated bottom.

There was no sales label on the bottom section, nor a recessed spot for the name plate.

 

 

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Bottom view of the Zenith "Vocalizer II" showing the Zenith name and model number below it.

Note the black plastic bottom that provided entrance to the battery compartment.

 

 

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Bottom view of the Zenith "Vocalizer II" (mod) showing the Zenith name and model number below it.

Note the tan plastic bottom that provided entrance to the battery compartment.

 

 

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View of the battery compartment of the Zenith "Vocalizer II" (mod).

 

 

 

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Bottom view of the Zenith "Vocalizer II" showing the serial number—Z2744 (top center).

The original Vocalizer II had serial numbers in the range Zxxxx, while the modified Vocalizer II had serial numbers in the range ZCxxx. For example, the serial number for the Vocalizer II (mod) shown in the picture above was ZC578 (barely visible).

 

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View of the battery compartment of the  Zenith "Vocalizer II" (mod) with they battery in place.

 

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The Zenith "Vocalizer II" (mod) took an "N" size 1.4 volt No. 401 mercury battery (left) such as this Eveready No. E401E battery.

It came with a 2-pak of batteries (right).

 

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View of the right side of the Zenith "Vocalizer II" (mod) showing the jack for the receiver cord (center) and the end tab of the plastic top (right).

 

 

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View of the right side of the Zenith "Vocalizer II" (mod) showing the three-pronged receiver cord plug and jack. The center prong was not used as the cord consisted of two wires.

 

 

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View of the right side of the Zenith "Vocalizer II" (mod) showing the receiver cord plugged into the jack. The plug could be plugged in with the cord facing to the top (shown) or the bottom, but facing the top was the best way so there wasn't a sharp kink in the wire that would eventually break.

 

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View of the clear, hard-plastic ear mold (left), the red plastic spacer (center) and the receiver (right).

 

 

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The Zenith "Vocalizer II" (mod) came with a little bottle of spare spacers (right). The spacers fit over the nubbin and provided a snug fit for the ear mold so no sound could leak out and cause feedback. Sometimes you might have to use two spacers at the same time to get a tight enough fit.

 

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View of the receiver (right) with the red plastic spacer in place ready to snap the plastic ear mold onto the nubbin.

 

 

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View of the receiver and ear mold from the side showing them snapped together.

 

 

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View of the receiver plug and jack. Note the center pin is longer than the other two.

 

 

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Rear view of the Zenith "Vocalizer II" (mod) receiver showing the cord plugged into it, as well as the design on the back of the receiver.

 

 

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The Zenith "Vocalizer II" (mod) manual.

 

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The Zenith "Vocalizer II" (mod) hearing aid in its original case showing the receiver, ear mold and cord (left), the hearing aid (center), bottle of spacers (top right) and box of batteries (bottom right).

 

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Top rear view of the Zenith "Vocalizer II" (mod) hearing aid case.

 

 

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The Zenith "Vocalizer II" (mod) hearing aid came in a protective cardboard box.

 

 

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Top rear view of the box the Zenith "Vocalizer II" (mod) hearing aid came in.

 

 

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End view of the box the Zenith "Vocalizer II" (mod) hearing aid came in.


 

 

 

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