MICRO MR-622
¥ 62,000 (around 1973)
¥ 67,000 (around 1974)
Commentary
Direct drive player equipped with high sensitivity arm and CD-4 specification cartridge.
The drive system uses a DC servo direct drive that is not affected by fluctuations in power supply voltage.
Pure electronic speed switching is adopted, and soft touch switching is possible.
For fine adjustment of rotation, 33 1/3 and 45 rpm are independent, and can be adjusted within ± 6%.
The tone arm has the same structure as that of MA-202. Vertical sensitivity of 5 mg or less is achieved by the vertical bearing of precision angular contact, and horizontal sensitivity of 10 mg or less is achieved by the radial type of the lateral dynamic bearing.
Resonance is reduced by the damping material inside the pipe.
It is equipped with a micro original needle pressure compatible variable inside four scan cellar.
The delay motion arm lifter stabilizes the contact between the record and the needle tip.
Die-cast shell is used, and MM type M-7000 cartridge is used. This cartridge is also compatible with CD-4 by using the separately sold replacement needle.
Equipped with clamper that can be vertically mounted and adjusted for replacement of various head shells.
Each connector of the arm head shell is gold-plated to prevent contact failure due to aging.
The cabinet has pockets for various accessories.
In addition, it is equipped with a height adjustable insulator.
It uses a low-capacity output cord and a 5-pin terminal on the player side.
Model Rating
Type | Record player |
<Turntable portion> | |
Drive system | Belt drive system |
Motor | DC servo motor |
Number of revolutions | 33 1/3, 45 rpm |
Rotational speed fine adjustment range | + / - 6% of the specified speed |
Turntable | 31 cm aluminum die cast, 1.5 kg |
Uneven rotation | Not more than 0.05% |
Signal-to-noise ratio | 55 dB or more |
Tone Arm Section | |
Type | Static Balance Type (MA-202) |
Effective length | 237mm |
Overhang | 15mm |
Offset angle | 21 ゜ 50 |
Maximum tracking error | 1.5 ゜ |
Applicable Cartridge Dead Weight | 4g ~ 16g (When Using Optional Sub Weight : 10g ~ 22g) |
Needle pressure variable range | 0 ~ 3g |
Cartridge Section | |
Type | MM Type (M-7000/5) |
Frequency characteristic range | 5 Hz to 40 kHz 5 Hz ~ 50 kHz (V-7000/F) |
Output balance | ± 0.5 dB at 1 kHz |
Channel separation | 30dB(1kHz) |
Output voltage | 3.5 mv (1 khz, 3.54cm/s) |
Load resistance | 47k Ω ~ 50k Ω |
Optimum needle pressure | 1.5g |
Needle tip | 0.5 mil diamond needle |
Compliance | 30x10-6cm/dyne |
Dead weight | 5g |
Exchange needle | V-7000/5(¥5,300) V-7000/e(¥7,100) V-7000/F (for CD-4, ¥ 11,000) |
<General> | |
Pwer | 100 VAC, 50Hz/60Hz |
Power consumption | 13W |
External dimensions | Width 500x Height 170x Depth 383 mm |