Assmann TS 10 . Rare German
office
recorder, wherein the magnetic carrier tape is not used,
and the flexible plastic disk coated with ferromagnetic.
The disc has a spiral groove of rectangular cross
section width of 0.35 mm, along which the serving part
of a special magnetic head. Head is completely universal,
it combined recording/playback and erase heads. I have in my collection
already similar in design voice recorders,
Telefunken 600,
which was produced since 1962, and
Olympia DG 402,
around 1974.Judging by the radio
components used, Assmann TS 10 was produced in the late
60's or early 70's. Structurally, the device is made very soundly, both
halves of the body cast, lightweight, possibly magnesium
alloy. Inside all done in German efficiently, accurately,
and still everything works fine. The unit has been to me
almost in working order, it took only a pointer to
grease the time counter. Counter graded in minutes from
0 to 10, and accordingly on the disc can be up to 10
minutes of recording. Despite the small volume of
records such recorders have their advantages, as disc
easily send a letter by mail.
Dimensions recorder 290 x 215 x 63 mm, weight 2.8 kg
with a microphone. Powered by AC 115/220 v. The recorder
uses a DC motor with electronic speed control. Original
magnetic disks having a diameter of 155 mm and an
opening diameter of 7 mm. However, I got no disc
recorder, and I had to use a little refinement after the
disc from the recorder
Telefunken 600. They differ only in the diameter of
the hole. Picture discs can be viewed at
Telefunken 600. Microphone Remote
combines the function of the external speaker. In his
case there is a Start / Stop switch and the mode dial -
recording (red), playing (green). In playback mode
button turns green reverse drive (analog rewind). In
recording mode lights up orange light located above the
buttons. Also on the upper end of the body there is a
switch the microphone sensitivity. It has two positions
- normal sensitivity, and reduced.
The front panel of the recorder is slit
through which to insert / remove a disc, volume control
combined with the power switch, the counter window of
time, and the lever to move the magnetic head to the
desired position on the disc.
To do this, press the lever downwards, after which it
can be moved to the right or to the left, and the
pointer counter will then be moved to the window along
the line.
When the lever is pulled while recording recorder enters
the playback mode.
If you move the lever to the far right and up, then
released the pressure lock magnetic disk, and it can be
inserted or removed.
Retainer disk presses a surface of the aluminum disk of
5 mm thickness with a rubber coating.
Below the disc slot on the front panel, there is another
window through which we can see the numbers from 1 to 30
on an aluminum disc in a circle.
This window is highlighted inside the
bulb, which is also an indicator of inclusion.
Video
review
In the phototo the rightcounterrecording time.
Photos can be enlarged
The top panel is a built-in speaker
grille. Externally recorder looks good, and inside too,
all in order
On the rear panel is a connector for the power cord,
switch voltage 115/220 v, connector for the phone
connector DIN 5 - apparently linear input and output
jack, microphone jack, which is also used as an external
speaker, and the selector switch dynamics embedded or
external (in microphone)
On the upper end of the
housing has a microphone switch its sensitivity
The right side panel is a speed control drive and lever,
which is used to boost the magnetic head at the
beginning of the spiral groove, for example if due to
defective disc that did not happen automatically. To do
this, select it to "record" or "play", and lift up. In
the "recording" head is pushed further than during
playback
Near the working
part of the magnetic head is a flat coil with a tapered
protrusion which also slides on the disc, but with an
interval of one groove. Perhaps it serves as a guide for
the work of the head so that it was exactly in the
middle of the groove. The photo shows that when the head
is raised, this projection is lowered below the
operating head protrusion, and when it is lowered it
first gets into the groove
On the left
side of the switch is a microphone / phone and the lever
for quick erase data on the disk. If you pick it up,
then fed to the drive magnet and the disc starts to
rotate at an increased rate. Magnet covers the entire
width of the spiral disk, and for one turn with it
deletes all the information. Erasing is performed as a
previous recording when recording new but using the
erase head
In the photo at the bottom right presser
disk retainer unlocked
In recording mode, about a minute before
the end of the groove on the drive from the internal
speaker begin to sound the warning tones. This occurs
when the spring contact located around the head begins
to touch for the pins arranged on the disc downholder
Deserves special
attention wiring assembled on transistors 19, 10 of them
in a universal amplifier (BC149C - 6 pcs, BC140 - 2 pcs,
BC109 - 2 pcs), 6 speed regulator
(BC108, BC109), and 3 in the voltage regulator (DC149C -
1 pc, BC140 - 2 pcs.) Build
quality is excellent, everything is done very carefully,
and pleasing to the eye. However, doubt the necessity of
such a complex electronics in the device of this class.
For comparison, in the same recorder
Telefunken 600
amplifier wiring assembled on 4 transistors, while it
works perfectly fine.
On the big board assembled universal
amplifier recording / playback, erasure generator and
circuit switching modes of the recorder
In the photo above right board voltage
regulator. In the photo at the bottom left of the engine
speed controller board
