MICRO MR-622S
¥ 59,800 (around 1974)
Commentary
A record player with enhanced perfection with a torque-up motor and high-sensitivity arm.
By adopting a DC servo motor with improved rotational torque, rotational unevenness is suppressed and stability is improved.
The turntable is made of aluminum die-cast with a precision machining finish with complete balance check.
The rubber sheet used for the turntable is a 320g weight class type and absorbs resonance due to rotation and resonance between the record sound groove and needle tip.
The speed selection switch is an electronic type using a micro switch, and 33 and 45 rotations can be selected.
The speed can be finely adjusted within ± 6% of 33 or 45 revolutions.
The tone arm has adopted a static balanced tone arm with the same structure as the MA-202. A unique angular type bearing is used for the vertical bearing part and a radial type bearing is used for the water plain bearing part. Thus, an initial vertical sensitivity of 5 mg or less and an initial horizontal sensitivity of 10 mg or less are achieved.
In addition, it is equipped with a unique inside four scan cellar that can handle the needle pressure, and the tracing ability of the cartridge is improved by applying the needle pressure equally to the left and right.
The head shell uses H-303, an aluminum die-cast head shell with less resonance, and the connector is gold-plated to prevent contact failure due to aging.
Needle pressure adjustment uses a one time point direct reading type from 0 to 3g. By attaching a sub weight (sold separately) to the rear part, a cartridge with weight up to 19g can be used.
The arm lifter uses an oil dump type that makes contact with and release from the record surface smooth.
The cabinet is a slim type with new rod measures, and measures against howling are also taken.
The output cord is a low-capacity type of 50pF/m and supports 4-channel regeneration.
The specified number of revolutions can be checked with a strobe and neon lamp inscribed on the periphery of the turntable.
Model Rating
Type | Record player |
<Turntable portion> | |
Drive system | Direct drive system |
Motor | DC servo motor |
Number of revolutions | 33 1/3, 45 rpm |
Rotational fine adjustment range | ± 6% (33, 45 independent adjustment) |
Turntable | 31 cm aluminum die cast, 1.5 kg |
Uneven rotation | Not more than 0.04% |
Signal-to-noise ratio | 60 dB or more |
Tone Arm Section | |
Type | Static balance type |
Effective length | 237mm |
Overhang | 15mm |
Applicable Cartridge Dead Weight | 3g ~ 15g 7g ~ 19g (when using optional sub weight, ¥ 300) |
Needle pressure variable range | 0 ~ 3g (1 Rotation) |
<General> | |
Pwer | 100 VAC, 50Hz/60Hz |
Power consumption | 13W |
External dimensions | Width 500x Height 153x Depth 384 mm |
Weight | 9.5kg |