Audio Database

The

MICRO MR-622S 59,800yen(around the 1974 time)

Description
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A torque up motor and the record player which raised completeness more with the high-sensitivity arm.

By adopting the DC servo motor which improved running torque, rotation unevenness is stopped and the stability is improved.
Moreover, the turntable has adopted the product made from aluminum die-casting of the precision instrument manipulation finish by which balance check was carried out completely.

The rubber sheet used for a turntable is a 320g heavy weight class type, and is absorbing the vibration by rotation, and the vibration between a record sound track and the needle point.

A velocity change-over switch is an electronic formula by using of a microswitch, and can choose 33-45 rotation.
Moreover, 33 and each of 45 rotations can tune a speed control finely in }6% of span.

As for the tone arm, the bearing part has adopted the static balance type tone arm of MA-202 and this structure,The radial type bearing was used for the Ain Guller type bearing original with a perpendicular bearing part, and the level bearing part, respectively, and the initial shock perpendicular sensitivity of 5mg or less and the initial shock level sensitivity of 10mg or less are realized.
Moreover, the original variable type inside force canceller corresponding to a stylus force is carried, right and left apply a stylus force equally, and the tracing capacity of the cartridge is heightened.

The head shell has adopted H-303 which is a head shell made from aluminum die-casting with few vibrations, and the gilding treatment has been performed in order to prevent poor contact by secular change in a connector part.

The stylus-force coordination has adopted the point Direct-reading type once to 0-3g, and the cartridge to 19g of self-weights serves as an enable by attaching an optional sub wait to the rear.

The arm lifter has adopted the oil dumping type with a smooth contact desorption with a record side.

A cabinet is the slim type which took rod new measures, and the measures against a howling are also taken.

Output code is a low capacity type of 50 pF/m, and is also aiming at the correspondence to 4ch play.

The checking of specified speed can be checked with the stroboscope and neon glow lamp which were minced by the perimeter of the turntable.


Rating of a mode
Form Record player
<Turntable part>
Drive system Direct-drive scheme
Motor DC servo motor
Rotational frequency 33 1 / 3 or 45rpm
Rotation fine-tune span }6% (33, 45 independent coordination)
Turntable The product made from 31cm aluminum die-casting, 1.5kg
Rotation unevenness 0.04% or less
S/N ratio 60dB or more
<Tone arm part>
Form Static balance type
Effective length 237mm
Overhang 15mm
Conformity cartridge self-weight 3g-15g
7g-19g (at the time of an option sub-wait using \300)
Stylus-force variable span 0-3g (one rotation)
<Synthesis>
Power source AC100V, 50Hz/60Hz
Power consumption 13W
Dimensions Width 500x height 153x depth of 384mm
Weight 9.5kg