Tube amplifier |
Record Player MR422 |
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Using a 4 pole hysteresis synchronous motor to the drive system.
It adopts a belt drive system. It is equipped with an belt locking mechanism, circuit switching button is locked when power is off, to prevent twisting of the belt.
The shaft supporting the turntable, a combination of gunmetal material and bearing 12mm stainless axis of fine finishing. |
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1.July 7, 2013, I was taken out of the storage room a record player for the first time in 30 years. It was a beautiful state besides. No abnormalities were found in motor, tone arm, the cartridge. |
2.Belt was battered been degraded. I bought the belt diameter 310mm (length 620mm), width of 6mm. It was 2,000 yen including shipping. |
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3.I had a grease and lubrication. |
4.Emblem. |
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5.Sponge of arm lifter had been cured. It does not become the cushion. |
6.So, I have bonded urethane sponge of 1mm thick. |
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7.Tone arm is adopted high sensitivity arm. Horizontal and vertical sensitivity 10mg or less. It have a ball pivot structure and unique precision miniature bearings. |
8.In addition, it is equipped with the inside force canceller stylus pressure corresponding variable expression. In addition, it has adopted the delay motion arm lifter, is protecting the needle point and record. |
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9.Cartridge is equipped with a V-3500/5 of VF type. This cartridge can be discrete 4ch playback by replacing the stylus exchange V-3500 / F. |
10.Cabinet are using rosewood. And, it is equipped with a large pocket that can hold and accessories. |
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11.It's equipped with a low-capacity output code, a 5-pin terminal. |
12.It have adopted the anti-vibration rubber as howling prevent the legs. |
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Specifications |
<Turn table> | |
drive system |
Belt drive |
Motor |
4 pole hysteresis synchronous motor |
number of revolution |
33 1/3,45rpm |
Turn table |
31cm Aluminum die cast 1.5kg |
Rotary irregularity |
below 0.06% |
signal to noise ratio |
more than 50dB |
<Tone arm> | |
Modle |
Static balance |
effective length |
237mm |
Overhang |
15mm |
Angle of offset |
21.83 |
Maximum tracking error |
1.5 |
Compatible cartridge weight |
3g to 16g |
Variable range of stylus |
0 to 3g |
<Cartridge> | |
Model |
Type VF(VF-3500/5) |
Frequency response range |
5Hz to 35kHz 5Hz to 50kHz(V-3500/F) |
Output Balance |
±0.5dB(1kHz) |
Channel separation |
30dB(1kHz) |
Output voltage |
3mV(1kHz,3.54cm/s) |
Load resistance |
47k ohm to 50k ohm |
Optimum stylus pressure |
1.5g |
Stylus tip |
0.5mil Diamond |
compliance |
30*10-6cm/dyne |
Weight |
4.5g |
Exchange styis |
V-3500/5 V-3500/F |
<Other> | |
Power sauce |
AC100V,50Hz/60Hz |
Power consumption |
14W |
External dimensions |
Width 502,Height 183,Depth 405mm |
Weight |
9kg |