MICRO DD-1
¥ 47,800 (around 1974)
Commentary
A direct drive player focusing on basic performance.
A brushless direct drive motor with a DC servocontrol is used in the drive system to obtain excellent characteristics.
The tone arm is designed to utilize the rotating part of MA-202 as it is, and the head shell uses H-303 with less resonance.
A damping material is used for the arm mounting part to prevent resonance as a player system.
The Inside Four Scan Seller uses Micro's unique spring tension and is a simple needle pressure-compatible variable type.
33 Fine adjustment of 1/3 and 45 rpm is independent structure, and can be changed within ± 6%.
It is also equipped with a large mirror type strobe for speed check.
The cartridge uses M-2100mkII which is an improved version of M-2100.
Equipped with an oil dump-type arm lifter, linked to on-off and turntable start.
Sufficient reinforcement and damping materials are used inside the cabinet to prevent resonance and howling when used together with rubber legs.
Soft rubber is used for rotating parts that require delicate adjustment such as the control for fine speed adjustment and main weight for needle pressure adjustment.
Model Rating
| Type | Record player |
| <Turntable portion> | |
| Drive system | Direct drive system |
| Motor | 8-pole 24-slot DC servo motor |
| Number of revolutions | 33 1/3, 45 rpm |
| Rotational speed fine adjustment range | + / - 6% of the specified speed |
| Turntable | 30 cm aluminum die-cast, 1.2 kg |
| Uneven rotation | Not more than 0.045% |
| Signal-to-noise ratio | 55 dB or more |
| Tone Arm Section | |
| Type | Static balance type |
| Effective length | 222mm |
| Overhang | 15mm |
| Applicable Cartridge Dead Weight | 4g ~ 11g |
| Needle pressure variable range | 0 ~ 3g (1 Rotation) |
| Cartridge Section | |
| Type | MM Type (M-2100mkII) |
| Frequency characteristic range | 10 Hz to 28 kHz |
| Output balance | ± 0.5 dB at 1 kHz |
| Channel separation | 30dB(1kHz) |
| Output voltage | 4 mv (1 khz, 3.54cm/s) |
| Load resistance | 50k Ω ~ 100k Ω |
| Optimum needle pressure | 2g |
| Needle tip | 0.6 mil diamond needle |
| Compliance | 25x10-6cm/dyne |
| Dead weight | 4g |
| Exchange needle | V-2100/6(¥3,600) V-2100/5(¥3,600) V-2100/e(¥5,600) |
| <General> | |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | 5.4W |
| External dimensions | Width 449x Height 150x Depth 340 mm |
| Weight | 8.2kg |