Technics SL-1000mk3
¥ 500,000 (released in 1982)
Commentary
A turntable system consisting of a turntable SP-10mk3, a tone arm EPA-100mk2, and a turntable base SH-10B5.
The turntable adopts a low-speed electronic commutator brushless DC motor with high rotational accuracy while having a huge starting torque. It realizes a starting torque of 16 kg ・ cm, the largest of Technics for consumer equipment. It shifts a 10 kg turntable to constant speed rotation at a rotation angle of 30 degrees for 0.25 seconds.
The stop mechanism uses both a mechanical brake and an electronic brake that instantaneously activates the reverse rotation drive circuit. The turntable stops in 0.3 seconds. In addition, instantaneous switching is possible from low speed to high speed by a huge starting torque and from high speed to low speed by activating the electronic brake circuit.
A turntable with a two layer structure made of aluminum die-cast and copper alloy has a weight of 10 kg and is 1.1 ton ・ cm.2Inertia mass of.
As a result, for a constant load of 10 kg-cm or less, there is no change in rotational speed. Therefore, when tracing the outer circumference of a 30 cm record with a needle pressure of 2g, there is no rotational speed deviation even if it is played simultaneously with 1000 arms.
We have adopted a unique integrated structure D. D. in which the rotor magnet of the motor is integrated with the turntable to ensure stable rotational characteristics.
In addition, a unique all-around detection F. G. has been adopted for the rotation speed detection, and by obtaining a high-precision F. G. detection signal, the rotation accuracy of the quartz D. D is extremely high.
By adopting a cabinet using high-precision zinc die-casting and aluminum die-casting, and a bottom base using an original acoustic material TNRC, we aim to eliminate vibration and resonance.
By adopting quartz synthesizer system, pitch control of constant speed rotation ± 9.9% is possible in 0.1% step.
As a result, at 33 1/3rpm, 45 rpm and 78.26 rpm, a total of 597 different quartz pitches were obtained, with 199 different pitches.
All operation of the turntable can be controlled remotely with the power supply part separated from the body.
The tone arm uses the world's first boron TYTANIA ムパイプ to increase mechanical strength and suppress harmful partial resonance such as bending and twisting. In addition, the head shell uses boron aluminum head shell which is a composite of boron fiber and aluminum to realize lightweight and high rigidity.
A high-sensitivity gimbal suspension system is adopted, and a total of 20 extremely small ruby balls are used to realize a トーナーム initial motion sensitivity of 5 mg for both horizontal and vertical motion.
A unique variable dynamic damping mechanism is adopted for the rear balance weight, and the low-frequency resonance frequency determined by the compliance of the cartridge and the effective mass of the tone arm is set to the optimum value, and the low-frequency resonance is drastically reduced, while the low-frequency mechanical impedance is also reduced.
Equipped with arm height adjustment mechanism of precision spiral helicoid structure.
The turntable base is integrally molded with TNRC, an acoustic material unique to Technics that has high specific gravity and large internal loss.
Dust cover is included.
Model Rating
| Type | Quartz synthesizer D. D. turntable system |
| <Turntable portion> | |
| Drive system | Direct drive |
| Drive motor | Brushless DC motor |
| Control system | Quartz control |
| Turntable (Including Rubber Sheet) | 32 cm copper alloy + aluminum die-cast, 10 kg |
| Number of revolutions | 33 1/3, 45, 78.26 rpm |
| Fine adjustment of rotational speed | ± 9.9% (0.1% step) |
| Starting torque | 16 kg / cm |
| Starting Characteristics (33 1/3rpm) | Constant speed at 0.25 seconds |
| Brake mechanism | Electronic brake Mechanical brake |
| Load variation | 10 kg / cm or less 0% |
| Rotational speed deviation | Within ± 0.001% |
| Wow flutter | 0.015%W.R.M.S(JIS C5521) |
| Signal-to-noise ratio | 92dB DIN-B(IEC 98A weighted) 60dB DIN-A(IEC 98A unweighted) |
| Tone Arm Section | |
| Format | Controllable dynamic damping universal tone arm Gimbal suspension system |
| Rotational axis sensitivity | 5 mg (horizontal and vertical initial motion sensitivity) |
| Arm height adjustment mechanism | 44 mm ~ 62 mm |
| Needle pressure adjustment range | 0 ~ 3g |
| Shell Weight | 9.5g |
| Applicable Cartridge Weight | 5g ~ 10g |
| Applicable Cartridge Compliance | 5x10-6Cm / dyne or higher (dynamic, 100 Hz) |
| <General> | |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | 25W |
| External dimensions | Body : Width 561x Height 175x Depth 466 mm Control unit : 166 mm wide x 96 mm high x 410 mm deep |
| Weight | 44.0kg |
| Remarks | Technics Cartridge Compliance Mix compliance display. 25x10 at other companies-6Values of cm/dyne or higher are displayed For static compliance indication, approximately The value of 1/2 is equivalent to dynamic compliance. |