Audium Model T9 Transistor (Body) Hearing Aid
This Audium Model T9 3-transistor hearing aid was made in Holland in 1955.
The Model T9 measured
2⅝" x 1¾" x ¾"
and weighed 4½ oz without the battery. It has a chrome front and back
with black plastic sides/top/bottom.
|
 |
Click picture for larger view |
| |
 
|
|
|
|
Top view of the Audium Model T9 showing the on-off switch with integrated
two-position tone (?) switch (top left), and the volume control (top
right). (The numbers on the volume control go from 0 to 5.) The
rectangular microphone grill is at the front.
|
 |
Click picture for larger view |
| |
|
|
The right side of the Audium Model T9 showing the round earphone jack (right
center). |
 |
Click picture for larger view |
| |
|
|
The bottom of the Audium Model T9 showing its only identifying marks. |
 |
Click picture for larger view |
| |
|
|
The battery compartment of the Model T9. It probably used an RM-1
mercury battery. A rather unusual feature is that the battery
compartment door is spring-loaded.
On the right there are 3 adjusting screws of unknown function.
|
 |
Click picture for larger view |
| |
|
(If a larger picture doesn't appear, you may have to
turn your pop-up blocker off)
|
|
|
