Audio Database

The

MICRO MR-622 62,000yen(around the 1973 time)
67,000yen(around the 1974 time)

Description
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The direct-drive player which carries a high-sensitivity arm and a compact-disk-4 specification cartridge.

DC servo direct-drive which does not receive influence in a variation of supply voltage, either is adopted as a drive system.

The velocity change has adopted the pure electronic formula and can switch it by soft touch.
Moreover, a rotation fine tune is 33. 45rpm of each has been independent of one third, and a coordination is possible in }6% of span.

The tone arm has adopted the thing of MA-202 and this structure, and has attained the perpendicular sensitivity of 5mg or less by the up-and-down bearing of the precision Ain Guller electric contact point. Moreover, the level sensitivity has also realized 10mg or less because the receptacle part of a right-and-left driving axle uses a radial type.
The vibration is reduced with the damping material inside a pipe.

The variable type inside force canceller original with a micro corresponding to a stylus force is carried.
Moreover, the contact of a record and the needle point is stabilized by the delay motion arm lifter.

The thing made from die-casting is adopted as a shell, and man-month type M-7000 is adopted as a cartridge. This cartridge supports compact-disk-4 by using an optional switching needle.
The possible clamper of a perpendicular mounting coordination is carried also in the switching of various head shells.

The gilding treatment in which arm head shell each connector does not have poor contact by secular change is performed.

The pocket which can store various accessories is prepared in the cabinet.
Moreover, the insulator in which a height coordination is possible is carried.

Low capacity output code is adopted and the player side has adopted 5 pin terminals.

Storage Insulator
Cartridge The

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 It is }6% to a convention velocity.
Turntable The product made from 31cm aluminum die-casting, 1.5kg
Rotation unevenness 0.05% or less
S/N ratio 55dB or more
<Tone arm part>
Form Static balance type (MA-202)
Effective length 237mm
Overhang 15mm
Offset angle 21 degree50
The maximum tracking error 1.5 degrees
Conformity cartridge self-weight 4g-16g
(At the time of an option sub-wait using: 10g - 22g)
Stylus-force variable span 0-3g
<Cartridge part>
Form man-month type (M-7000/5)
Frequency characteristic span 5Hz - 40kHz
5Hz - 50kHz (V-7000/F)
Output balance }0.5dB (1kHz)
Channel separation 30dB(1kHz)
Output voltage 3.5mV (1kHz, 3.54 cm/s)
Load resistance 47kohms - 50kohm
The optimal stylus force 1.5g
Needle point 0.5mil diamond needle
Compliance 30x10 to 6 cm/dyne
Self-weight 5g
Switching needle V-7000/5(5,300yen)
V-7000/e(7,100yen)
V-7000/F (the object for compact-disk-4, 11,000yen)
<Synthesis>
Power source AC100V, 50Hz/60Hz
Power consumption 13W
Dimensions Width 500x height 170x depth of 383mm