SoundScriber. Made in the USA.
This device probably can be named a phonograph as record
is made by a method mechanical íàðåçàíèÿ flutes on a
flexible plastic disk. This is one of
the oldest pieces of my collection. Whole series of
modifications, including in other buildings. Likely
start production in 1945. Dimensions 300 x 260 x 205 mm.
Weight about 9 kg. Power supply 110 - 120 v.
In a good and beautiful wooden building with a steel
chassis on which are mounted, the whole mechanics and an
electrician. AC motor at 115 v has its own gear, and
coupled with the second gear through a flexible coupling,
apparently to reduce vibration. The second gear attached
to the chassis under the disc, rotates it, and transmits
the traffic through a long shaft to a mechanism for
moving the tonearm record. Both tonearm made
sufficiently technologically. Arm must be lifted
playback is provided with a massive counterweight and
the mechanism of compensation the rolling force. The
head of the tonearm record rises and falls with the
switch located on the front panel. Both tonearm consist
of two parts, connected by flexible inserts. In tonearm
reproduction Box leather needed to reduce the effects of
vibration on the engine head. In tonearm record
insertion from a flat spring that presses the head with
a needle to the disc in the recording mode. Wires from the heads are connected
to the further electrically through connectors built
into the chassis next to the tonearm. For the
convenience of finding the right place record, there are
special lines, marked in minutes, from 0 to 15. Circuit
rather complicated, collected on five radio tubes. On
the chassis right next to the disk are tumblers power of
radio tubes and the engine. On the left is the
controller sensitivity microphone. The volume knob is on
top of the enclosure. On the front panel, next to the
selector switch, there is a lamp indicating the
recording level. The brightness of its luminescence is
proportional to the level of the input signal. Also on
the front panel is a decorative hole dynamics. The rear panel includes connectors
for the power cord, microphone, headphones and foot
pedal control. To burn CDs using a flexible green
plastic diameter of 5 and 7 inches. At 7-inch disk can
do 15 minutes of recording time at a rate of 33 rpm.
The unit has been to me in working order. Repair I started with the dismantling and study design.
Quickly discovered the first serious defect, was on the
precipice coil pickup. Pickup is in the form of a
permanent magnet between the poles of which is movable
coil (35 ohms) with an iron core, mechanically connected
to the holder of the needle. I'm lucky break was the
beginning of the winding, and it was restored. The
recording head was working, it has a resistance of 1 ohm.
Mechanics also revealed serious problems. The engine was
rotated, but issued threatening sounds, and the flexible
coupling was broken. Flexible couplings allow two
inserts from strong thick cloth, one of which was torn.
After the bulkheads and lubricating the engine with
gearbox and clutch repairs, mechanics fully earned. A
trial run showed that significant noise and vibration
from the engine there, and needle recording head cuts
qualitative groove. Needle bloom, like corrosion, but
the cutting tip is clean. He made, probably from a corundum. Remove corrosion, I did not,
because fear damage to the tip.
was absent. As it turned out later, the
filament of tubes connected in series.
and two 35L6)
filament voltage - 35
v. and two
(12SC7) - v.
12 In sum,
we obtain 129
v, which can
be used to
voltage 110 - 120
v. Of course
this is not a perfect solution, but it allowed the
designers to get rid of the transformer. Termination of
the filament was at one of the radio tubes 12SC7.
Russian analog 12N10S I have not found, and ordered the
original in America. After replacing the radio tubes,
and all six of electrolytes, the device has earned, but
conditionally. Recording and playback appeared, but the
sound was weak. We had to buy the remaining radio tubes,
and replacing them has given a result, the sound was
very loud. Plays apparatus
normally, and if you listen to conventional phonograph
record factory made, the sound is excellent. However,
when recording to get the same quality of sound does not
work. The voice is very clearly written, and the music
sounds like when played on an old gramophone, just loud.
this is due to worn out recording needle. I suppose that
to achieve the best result I can not do.
It should be noted that the speed of rotation of the
disk turns a little less than it should be. This is due
to the fact that the motor speed depends on the
frequency of the mains voltage. In the United States -
60 Hz, and in Russia - 50 Hz.
On the enlarged photo
can be seen the groove and a cutting tip of the needle.
The device has been bought in the complete set with two
packs of disks of 5 both 7 inches, and a pack of
original envelopes for 7 inch disks.
Sound pickup in the disassembled kind.
Engine with gearbox, clutch, and the
second gear assembly
In the photo on the left of a broken
clutch. In the photo on the right see the shaft
connecting the second gear mechanism to move the tonearm
The device has come without a needle of a
sound pickup, and I have tested two variants. In the photo on the left uses an
ordinary sewing needle. In the photo on the right needle
from the modern player. With two needles, the device
works, and much of a difference I noticed.
Leaflet SoundScriber, found on the