Therapeutic Conversation Tube
The Therapeutic Speaking Tube is a relatively modern conversation
tube manufactured by the Electronics Development Company of Minneapolis,
MN in 1964.
This conversation tube measured 45" (114.3 cm) from tip to tip and
weighed 5.9 oz. (170 g).
It is somewhat ironic that a company with a name like the
"Electronics Development Co." would make, not a transistorized hearing
aid, but an acoustic speaking tube.
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Unlike conversation tubes of the previous century, the Therapeutic
Speaking Tube was made of soft rubber or plastic and was not tapered.
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Also, the bell of the Therapeutic Speaking Tube was made of polished
metal (not aluminum). When tapped, it tinkles. The comfortable handle
was 4⅝" (11.8 cm) long while the bell itself was 3" (7.6 cm) long. |
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Close-up view of the mouth of the bell of the Therapeutic Speaking Tube.
The bell measured 3 1/16" (7.8 cm) in diameter.
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Side view of the earpiece. It was made of dark red plastic.
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Close-up of the ear tip showing the rather large hole in the end—¼" (0.6
cm).
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The Therapeutic Speaking Tube in its original box.
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Close-up view of the inside of the lid of the Therapeutic Speaking Tube
box. It reads "Therapeutic Speaking Tube", the initials of the company "EDC"
and in tiny letters below that "The Home of Computer Hearing
Technology". At the bottom is the company name "Electronic Development
Co." and "4020 West Lake Street, Minneapolis, Minnesota 55416". |
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Outside view of the box the Therapeutic Speaking Tube came in. The
box measured 12" x 7¼" x 3⅜" (30.5 x 18.4 x 8.6 cm).
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