Danavox Model 747-PP Binaural Transistor Hearing Aid
The Danavox Model 747-PP transistor hearing aid was
manufactured by Danavox International A/S of Denmark in 1974. It was rather
large in size for the period and measured 3 1/8" by 2¾" by 7/8".
This body-style aid had an integrated circuit amplifier, in addition
to using some
discrete transistors. It came with
rechargeable batteries.
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A unique feature of this aid is that it was a true stereo hearing
aid—the only one in the museum. Notice the two microphones (top left and right corners) and the two
volume controls (red wheels center). The on/off switch is below them.
The telecoil/microphone switch (top center) had three
positions—microphones only (M), telecoils only (T) and both
microphones/telecoils at the same time (MT).
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The Danavox 747-PP in its original box. |
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The charger for the Danavox 747-PP. |
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The Danavox 747-PP in its charger. It used rechargeable
nickel-cadmium batteries.
Read the original
Danavox 747
Owner's manual courtesy of Rose Sheppy in the UK.
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