Audio Database

The

MICRO SOLID-5 54,800yen(around the 1974 time)

Description
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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 hardness.
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.

The 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.
Moreover, the 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.

The head shell has adopted the product made from die-casting with few vibrations which employ the property of a cartridge efficiently as it is.
Moreover, a 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 stabilized.

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 possible.

Stream-composition

Rating of a mode
Form Record player
<Turntable part>
Drive system Belt drive scheme
Motor DC servo motor
Rotational frequency 33 1 / 3 or 45rpm
Rotational frequency fine-adjustment span }6% (33 1/3, 45 independent coordination)
Turntable The product made from 31cm aluminum die-casting, 1.5kg
Rotation unevenness 0.035% or less
S/N ratio 58dB or more
<Tone arm part>
Form Static balance type
Effective length 222mm
Overhang 15mm
Conformity cartridge self-weight 4g-11g
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)
<Synthesis>
An attached organization Arm lifter (height good transformation)
Stroboscope light
Level
Overhang gage
Power source AC100V, 50Hz/60Hz
Power consumption 3.5W
Dimensions Width 466x height 142x depth of 342mm
Weight 9.3kg