MICRO MR-411
¥ 41,000 (around 1973)
Commentary
Belt drive player with stable parts for harmony.
A 4-pole hysteresis synchronous motor, MB 400 s, is used for the drive system, and an aluminum die-cast 31 cm turntable is driven by a belt drive.
The tone arm is equipped with MA-77mkII which is a static balance type tone arm with inside four scan cellar of direct reading system.
The cartridge is equipped with M-2100/5 which is a MM type cartridge.
Equipped with a belt lock mechanism linked to the power switch.
Equipped with an oil dump type arm lifter.
As a countermeasure against howling, 19 cm plywood is used, and a 9 mm back plate using a player base and reinforcement is adopted.
A low-capacity shield wire is adopted to support 4 ch.
Equipped with a parts box that can store accessories.
Model Rating
Type | Record player |
<Turntable portion> | |
Type | MB-400S |
Drive system | Belt drive system |
Motor | 4-pole hysteresis synchronous type |
Number of revolutions | 33 1/3, 45 rpm |
Turntable | 31 cm aluminum die cast, 1.4 kg |
Uneven rotation | Not more than 0.06% |
Signal-to-noise ratio | 50 dB or more |
Tone Arm Section | |
Type | Static Balance Type (Inside Force Amount Direct Reading Type) MA-77mkII |
Total Length | 335mm |
Effective length | 237mm |
Overhang | 15mm |
Offset angle | 21 ゜ |
Maximum tracking error | 1.5 degrees or less |
Applicable Cartridge Dead Weight | 4g ~ 18g |
Needle pressure variable range | 0 ~ 3g (1 Rotation) |
Inside for Scan Seller Variable Range | 0 to 330 mg |
Cartridge Section | |
Type | MM Type Cartridge (M-2100/5) |
Frequency characteristic range | 10 Hz to 25 kHz |
Output balance | ± 0.5 dB |
Channel separation | 30dB(1kHz) |
Output voltage | 4 mv (1 khz, 3.54cm/s) |
Load resistance | 50k Ω ~ 100k Ω |
Optimum needle pressure | 1.5g |
Needle tip | 0.5 mil diamond needle |
Compliance | 28x10-6cm/dyne |
Exchange needle | V-2100/5 (V-2100/6, V-2100/e also possible) |
<General> | |
Power consumption | 20W |
External dimensions | Width 500x Height 194x Depth 378 mm |
Weight | 9.5kg |