Audio Database

The

MICRO MR-322 35,000yen(around the 1973 time)
39,500yen(around the 1974 time)

Description
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The belt drive player which carries the tone arm of the class highest class.

The turntable made from aluminum die-casting is adopted as a turntable, and the drive system serves as a belt drive scheme using 4 pole outer rotor type motor with a die-casting radiator.
With the die-casting radiator, the improvement in the heat-dissipation effect and the oscillating reduction of a motor are realized, and the endurance is improved.

The power switch is incorporated in the arm rest and has become a updation of the belt with the interlocking type with the high belt nowait-lock organization of an effect.

The full-scale bearing is used for the rotation fraction of a tone arm, and the high die-casting shell of a special composition pipe and a synthetic is adopted as it.
Moreover, the inside force canceller original with a micro spring tension type is carried, and tracing capacity is heightened.

M-2100/6 of man-month type cartridge are adopted as a cartridge.

The oil dumping type arm lifter is adopted.

The insulator of the new-installation meter which can adjust a height is adopted. xcels also in a high region property, and the use as an object for four channels is also possible.

Motor Insulator Cartridge

Rating of a mode
Form Record player
<Turntable part>
Drive system Belt drive scheme
Motor 4 pole hysteresis synchronous outer rotor motor
Rotational frequency 33 1 / 3 or 45rpm
Turntable The product made from 30cm aluminum die-casting, 1kg
Rotation unevenness 0.08% or less
S/N ratio 48dB or more
<Tone arm part>
Form Static balance type
Total length 300mm
Effective length 222mm
Overhang 15mm
Offset angle 21 degrees
The maximum tracking error 1.5 degrees or less
Inside force canceller The formula corresponding to a stylus force
Conformity cartridge self-weight 4g-11g
Stylus-force variable span 0-3g (one rotation)
<Cartridge part>
Form man-month type (M-2100/6)
Frequency characteristic span 10Hz - 28kHz
Output balance }0.5dB (1kHz)
Channel separation 30dB(1kHz)
Output voltage 6mV (1kHz, 3.54 cm/s)
Load resistance 50kohms - 100kohm
The optimal stylus force 2g
Needle point 0.6mil diamond needle
Compliance 25x10 to 6 cm/dyne
Self-weight 4g
Switching needle V-2100/6(3,600yen)
V-2100/5(3,600yen)
V-2100/e(5,600v)
<Synthesis>
Power source AC100V, 50Hz/60Hz
Power consumption 12W
Dimensions Width 459x height 171x depth of 365mm
Weight 8.5kg