Technics launches Grand Class SL-1200GR: Leading-edge Technologies Deliver a New Standard in Direct-Drive Turntables
4 January 2017 – Technics today unveiled the new Grand Class SL-1200GR Direct-Drive Turntable System for audio enthusiasts, a standard model inheriting the technology of the SL-1200G, which was developed as a reference direct-drive turntable for the next generation.
Fusing Technics’ Traditional Analogue and Leading-edge Digital Technologies
Launched in 2016, the SL-1200G combined Technics‘ traditional analogue technology and advanced digital technology. Its outstanding performance literally rocked the hi-fi market and redefined the reference for direct-drive turntables.
Many design elements and components from the SL-1200G have been developed to create the SL-1200GR, such as the coreless direct-drive motor and precise motor control technology, high-rigidity platter and high-sensitivity tonearm. This ensures audio enthusiasts using the SL-1200GR can enjoy music with the rich, robust sound of analogue records.
Coreless Direct-Drive Motor Achieving Stable Rotation
Unlike belt-drive and other systems, direct-drive systems rotate the motor at low speed and directly drive the platter. This concept provides numerous advantages, such as the almost complete absence of degradation in S/N ratio due to motor vibration, as well as high reliability over a long period of time because of not requiring parts replacement.
In 2016, Technics developed the twin-rotor, surface-facing, coreless direct-drive motor with rotor magnets placed on both sides, eliminating the rotation irregularity of the motor, referred to as "cogging," which was a unique issue for direct-drive systems. This motor was adopted for the SL-1200G, which once again drew a significant response in the hi-fi market. The SL-1200GR inherits the same design philosophy with the new development of a single-rotor, surface-facing, coreless direct-drive motor, resulting in the elimination of cogging.
The SL-1200GR’s speed control system, which verifies and adjusts the motor, uses the latest control technology cultivated in the development of Blu-ray devices, just as that used by the SL-1200G. In addition, the electrical circuitry has been tuned to ensure the newly developed motor of the SL-1200GR achieves maximum performance.
Turntable Platter —Pursuing Rigidity and Vibration Damping Characteristics
The platter achieves high-rigidity and vibration-damping characteristics by using a two-layer construction with deadening rubber applied to the entire rear surface of the aluminum die-cast. This eliminates the unnecessary resonance that is otherwise relayed to the record, thereby producing clear sound.
To increase the inertial mass and to reduce vibration, the shape of the aluminum die-cast portion was optimized by computer simulation. At 2.5kg (including the rubber mat), the SL-1200GR platter is 0.8kg heavier than that of the previous SL-1200MK5. Also, the back surface of the platter features strengthening ribs to improve rigidity. Increasing the surface area of contact with the deadening rubber achieves damping characteristics that are more than twice as good as those of the SL-1200MK5.
Tonearm Achieving High Initial-Motion Sensitivity
The precision static-balance S-shaped tonearm uses an aluminum arm tube which provided low mass and high rigidity. Providing a stable platform for the accurate tracking of the pickup cartridge.
With its gimbal suspension construction, the tonearm bearing section of the SL-1200GR uses a cut-processed housing that employs high-precision bearings, as in the SL-1200G. The high initial-motion sensitivity of 5mg or less is achieved through manual assembly and adjustment by skilled workers in our factory in Japan. This enables records to be accurately traced.
Gold-plated phono terminals and ground terminals are provided below the tonearm, so a wide variety of cables can be selected. Also, the use of metal shielding construction inside the case reduces the effects of external noise and interference.
High-rigidity Body and High-damping Silicon Insulators for Beautiful Sound and Isolation from Vibrations
The SL-1200GR ensures high-rigidity by using a chassis with a two-layered construction solidly unifying the BMC and the aluminum die-cast components.
For the insulators supporting the body, as with the SL-1200G, the SL-1200GR uses special silicon rubber that ensures both high vibration damping characteristics and long-term reliability. Vibration in the horizontal direction are absorbed by reinforcement with cylindrical tubes using microcell polymers. While inheriting the technology of the SL-1200G, the insulators have been modified to specifically suit the characteristics of the SL-1200GR.
Technology for Rotational Stability
- Coreless Direct Drive Motor
- High-Precision Motor Controller
Construction for Vibration Tolerance
- Highly Damped Turntable Platter
- Rigid Cabinet Construction
- Silicon Rubber Insulator
High Quality Parts
- High Sensitive Tonearm
- Gold--plated Terminals
Technics Definitive Design
Inherited SL-1200 Series
- Type: Direct Drive Manual Turntable
- Turntable Speeds: 33 1/3, 45, 78 rpm
- Adjust Range: ±8%, ±16%
- Starting Torque: 2.2 kg･cm (1.91 lb-in)
- Start up time: 0.7 s. from standstill to 33 1/3 rpm
- Wow and Flutter: 0.025%W.R.M.S.
- Rumble: 78dB(IEC 98A Weighted)
- Turntable Platter: Aluminum die-cast
Weight：Approx. 2.5kg (5.5 lb) (Including rubber mat)
- Type: Universal, Static Balance
- Effective Length: 230mm (9-1/16")
- Overhang: 15mm (19/32")
- Tracking Error Angle:
Within 2° 32'(at the outer groove of 30cm (12") record)
- Within 0° 32'(at the inner groove of 30cm (12") record)
- Offset Angle: 22°
- Arm Height Adjustment Range: 0 - 6mm
- Stylus Pressure Adjustment Range: 0 - 4g (Direct Reading)
- Head Shell Weight: Approx. 7.6g
- Applicable Cartridge Weight Range: [without auxiliary weight] 5.6 - 12.0g (14.3 - 20.7g (including head shell))
[with auxiliary weight] 10.0 - 16.4g (18.7 - 25.1g (including head shell))
- Cartridge Mounting Dimension: JIS 12.7mm
- Head Shell Terminal Lug: 1.2mmφ 4-pin terminal lug
- Audio Output: PHONO (Jack) x 1, EARTH TERMINAL x 1
- Power Supply: AC110-240 V, 50 Hz / 60 Hz
- Power Consumption: 11 W (Approx. 0.2W (Standby))
- Dimensions (W x H x D): 453 x 173 x 372 mm (17-27/32 × 6-13/16 × 14-21/32 inch)
- Weight: Approx. 11.2kg (Approx. 24.7lbs)
Panasonic Corporation is a worldwide leader in the development of diverse electronics technologies and solutions for customers in the consumer electronics, housing, automotive, enterprise solutions and device industries. Since its founding in 1918, the company has expanded globally and now operates 474 subsidiaries and 94 associated companies worldwide, recording consolidated net sales of 56.794 billion Euro (7.553 trillion Yen) for the year ended March 31, 2016. Committed to pursuing new value through innovation across divisional lines, the company uses its technologies to create a better life and a better world for its customers. To learn more about Panasonic visit: http://www.panasonic.com/global.