Maico MT-2A Portable Desk Hearing Aid
The Maico MT-2A portable desk hearing aid was a table-top model made
in 1961.
Its exact purpose (and large size) of this device is a bit of a
mystery as by 1953 transistorized hearing aids were small body worn
units and contained 3 transistors. (A single-transistorized device would
not give much amplification.)
This large table-top unit uses a single transistor with markings GE 29A 722.
The size of the box is 7½" by 4¼" by 3½". It weighs 2 lbs. without batteries.
|
 |
Click picture for larger view |
| |
 
|
|
|
|
It came with a single earphone that was marked Permoflux
Corporation, Chicago. The rubber earpiece is marked MC-1 62A.
|
 |
Click picture for larger view |
| |
|
|
A side view of the earphone and headband. |
 |
Click picture for larger view |
| |
|
|
The inside (bottom) showing the large battery compartment that
contained two large 9 volt Eveready No. 276 batteries. (Why the
need for a pair of such large batteries for a 1 transistor device is another
mystery. If anyone reading this knows exactly what this device was used
for, please contact us with an explanation.) |
 |
Click picture for larger view |
| |
|
|
The picture at the right shows the information stamped on the battery
door.
The USA Copyright Office in their Catalog of Copyright Entries, Third
Series: 1961 under "Current Registrations" p. 455 has this entry:
"Model MT-2A Maico portable desk hearing aid.
© Maico Electronics, Inc.; 7Feb61; A489228." ["A489228" is the
copyright registration number.]
|
 |
Click picture for larger view |
| |
|
(If a larger picture doesn't appear, you may have to
turn your pop-up blocker off)
|
|
|
