||54,800yen(around the 1974 time)
The belt drive type player by DC servo control.
The small DC servo motor was carried in the mechanism part, slight
rotation deflection was also controlled by the servo mechanism, and the
constant-speed degree rotation has been obtained. The constant-speed rotation
property is improved to the belt by adoption of the neoprene belt which was
excellent in the quality of the material, and a finish precision besides a
Moreover, the thing made from aluminum alloy die casting is adopted as
a turntable, and the stainless steel material of 12 phi is used for a turntable
shaft. The bearing bearing is a full-scale thing using gun-metal material.
The current-limiting circuitry is adopted as a power-source
part, and it has the structure of controlling the temperature of the motor
itself also to the load intensity of the transient to a turntable.
thing adapting the mechanism of the rotation fraction of tone arm MA-202 is
adopted as a tone arm, and the performance of the initial shock level
perpendicular sensitivity of 10mg or less has been obtained.
variable type inside force canceller corresponding to the stylus force which
raises the tracing capacity of a cartridge is carried.
The arm lifter
has adopted the oil dumping type with a smooth contact desorption with a record
side and the needle point.
Moreover, the queuing guide pin in which a height
coordination of an arm lifter can be performed simply is attached.
head shell has adopted the product made from die-casting with few vibrations
which employ the property of a cartridge efficiently as it is.
head nowait-lock connector part can be adjusted perpendicular.
A mass, planar nature, a vibration, etc. are adopted in piles in the study
on many sides, the solid base supporting the mechanism of a player avoids
unnecessary interior space, and the quality of the material adopts the
low comression homogeneous of the resonance point, and is performing the
measure against a howling.
Moreover, method of motor unit large-sized housing with little influence of
an external temperature is prepared, and the property of a motor unit is
The power sources on and off and 33 The switching mechanism
of 1/3 and 45 rotations has adopted the electronic formula, and in order that a
belt may chip and there may be no substitute, a updation of a belt and the
influence on a rotational-speed property have decreased.
The checking of specified speed is checked with the stroboscope and neon glow lamp which were
minced by the perimeter of the turntable.
The horizontal coordinate of a
player is possible at the absorber and level in which a height coordination is
||Belt drive scheme
||DC servo motor
||33 1 / 3 or 45rpm
|Rotational frequency fine-adjustment span
||±6% (33 1/3, 45 independent coordination)
||The product made from 31cm aluminum
||0.035% or less
||58dB or more
|<Tone arm part>
||Static balance type
|Conformity cartridge self-weight
8.5g-16.5g (option sub-wait A, 500yen)
13.5g-21.5g (option sub-wait B, 500yen)
|Stylus-force variable span
||0-3g (one rotation)
|An attached organization
||Arm lifter (height good transformation)
||Width 466x height 142x depth of 342mm