Oticon Model P11P Transistor (Body) Hearing Aid
The Oticon Model P11P transistor body hearing aid was produced by Oticon A/S
of Denmark in 1975, but actually manufactured in their plant in Scotland.
(Oticon set up a plant in Scotland in 1973 as a requirement for getting
a contract with Medresco/British Ministry of Health to have them carry
their hearing aids for distribution to the UK.)
This body aid measured 2½" x 1¾" x ¾"
(6.3 x 4.4 x 1.9 cm) and weighed 1.4 oz.
(40 g) without the battery.
|
 |
Click picture for larger view |
| |
|
| |
|
|
Top view of the Oticon Model P11P transistor body hearing aid showing the "M" (microphone),
"MT" (microphone & t-coil) and "T" (t-coil) switch (upper
left), the
1-9 volume control wheel (lower left) and the On (+) - Off (0) switch (lower
right). The
microphone grill (center) is composed of 3 rows of 5 tiny slots.
|
 |
Click picture for larger view |
| |
|
|
Rear view of the Oticon Model P11P transistor body hearing aid showing the
battery door (right side) in its closed position.
|
 |
Click picture for larger view |
| |
|
|
Rear view of the Oticon Model P11P transistor body hearing aid showing the battery
compartment with the battery door swung out. This hearing aid took a
standard 1½ volt AA battery.
|
 |
Click picture for larger view |
| |
|
|
Left side view of the Oticon Model P11P transistor body hearing aid showing
the battery door arrangement. To open the battery door you just pushed
on the part of the side sticking out. Note the wire pocket clip on the
front (top).
|
 |
Click picture for larger view |
| |
|
|
Close-up view of the lower right side of the Oticon Model P11P
transistor body hearing aid showing the 3-pronged receiver cord plug and
jack. Note that the center pin was not used. The plug could fit into the
jack with the cord end up or down although it was usual to have the cord
end facing up (to the left). |
 |
Click picture for larger view |
| |
|
|
Bottom view of the Oticon Model P11P transistor body hearing aid showing
the screw adjustment for the overall gain (130 - 142 dB SPL) and the
screw adjustment for the tone (from low to high). (SPL is the acronym
for Sound Pressure Level.) On the right is the model number (P 11 P)
and where it was made (Scotland).
On the far right is the serial number (208511).
|
 |
Click picture for larger view |
| |
|
(If a larger picture doesn't appear, you may have to
turn your pop-up blocker off)
|
|
|
