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Technics SL-1310G Grand Class Turntable
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Direct Drive Turntable System SL-1310G
New Generation Grand Class Turntable
Turntable with a Hi-Fi design featuring ΔΣ-Drive, a new motor drive technology that delivers high rotational accuracy and low vibration. The turntable’s new motor, three-layer platter, and high-rigidity chassis ensure even higher sound quality.
Features
Coreless Direct Drive Motor Achieving Stable Rotation
In the SL-1310G, the use of a coreless direct-drive motor with no iron core eliminates uneven rotation of the turntable known as cogging. Also, the twin-rotor construction reduces the bearing load while maintaining high torque, and reduces minute vibrations during rotation. Furthermore, the SL-1300G’s motor was redesigned to eliminate subtle vibrations that could affect sound quality. To improve rigidity, the same reinforcement pattern as the Reference Class SL-1000R/SP-10R was used for the coil mounting base.
Motor-Drive System, ΔΣ-Drive (Delta Sigma Drive)
Unlock a realm of audio precision with the ΔΣ-Drive – a state-of-the-art system harnessing Technics’ expertise in PWM signal processing. In addition to reducing harmonics, the drive suppresses vibrations from the motor for smoother, more accurate rotation, ensuring a rich reproduction of the music.
In 1970, Technics developed the world’s first direct drive turntable.
Direct drive turntable systems helped to significantly improve issues with previous turntables, such as S/N ratios, and wow and flutter. Used by broadcasting stations for their outstanding performance and reliability, these turntables came to dominate the industry. In 2016, Technics developed the coreless direct drive motor, which helped to eliminate a mechanical issue known as cogging. Combining this motor with the latest digital rotational control technologies helped to realise a dramatic improvement in sound quality.
Technics has continued to engage in R&D to further improve the audio quality of analogue vinyl and better draw out the charms of the music, and as a result has successfully developed the ΔΣ-Drive, which boasts significant advancements over previous direct drives. This development marks the next generation of Technics’ direct drive turntable systems.
Direct drive turntable systems helped to significantly improve issues with previous turntables, such as S/N ratios, and wow and flutter. Used by broadcasting stations for their outstanding performance and reliability, these turntables came to dominate the industry. In 2016, Technics developed the coreless direct drive motor, which helped to eliminate a mechanical issue known as cogging. Combining this motor with the latest digital rotational control technologies helped to realise a dramatic improvement in sound quality.
Technics has continued to engage in R&D to further improve the audio quality of analogue vinyl and better draw out the charms of the music, and as a result has successfully developed the ΔΣ-Drive, which boasts significant advancements over previous direct drives. This development marks the next generation of Technics’ direct drive turntable systems.
Vibration Resistance Design
The turntable has a three-layered construction with a rigidly combined brass and aluminium die-cast platter. With a deadening rubber covering its entire rear surface to eliminate unnecessary resonance, thereby achieving high rigidity and vibration damping. This delivers smooth rotational stability and inertial mass surpassing the SP-10MK2, the direct-drive turntable standard used by broadcast stations worldwide, as well as having more than twice the inertial mass of the SL-1200MK5.
Two-layered Cabinet Construction
The SL-1310G ensures high rigidity by using a body with a two-layered construction that solidly unifies the BMC and the aluminium die-cast chassis. Reinforcing ribs have been added between the motor/tone arm on the top panel. This improves rigidity and vibration damping characteristics.
High-level Balance Adjustment
When the weight distribution of the turntable is uneven, excess vibration or noise occurs during rotation, which causes degradation in sound quality. Therefore, the balance of the turntable is adjusted at the factory by using specialized high-precision balance adjustment equipment for each and every item after the turntable is assembled. Turntables that have undergone adjustment are labelled with a sticker reading “BALANCED” to indicate that adjustment has been done.
Multi-Stage Silent Power Supply
Low-Noise Switching Circuit
Use of a high-speed switching power supply ensures a stable supply capacity and less ripple and humming. Applying a switching power supply to a turntable eliminates the need for a large transformer and countermeasures for the ensuing mechanical vibrations. A switching frequency of above 100 kHz limits the impact of noise on the music playback bandwidth.
Current Injection Active Noise Cancelling
This technology combines a noise detection device with an error amplifier. It detects residual noise in the power supply and applies an inverse phase current to remove noise components. It removes low frequency noise more effectively than a regulator to ensure a more ideal power supply.
Tonearm Achieving High Initial-Motion Sensitivity
The tonearm, a crucial component for precise reading, tracks the record's rotation. Inherited from Technics, it employs a lightweight, rigid aluminium pipe in the traditional static-balance universal Sshape. Featuring a gimbal suspension and high-precision bearing, it achieves high initial-motion sensitivity through manual assembly by skilled Japanese artisans. This meticulous construction ensures accurate tracing of record grooves. Plus, it includes an auxiliary weight, providing flexibility for a variety of pickup cartridges.
Features for Clearer Sound
High-Damping Silicon Insulators
For the insulators supporting the body, the SL-1310G uses special silicon rubber that ensures high vibration damping characteristics and long-term reliability.
High-Quality Terminals
The turntable uses gold-plated phono terminals for detachable cables, while metal shielding construction inside the case reduces the effects of external noise.
Specs
Coreless direct drive motor achieving stable rotation
ΔΣ-Drive suppresses vibrations from the motor for smoother, more accurate rotation
Anti-vibration structure with a three-layer platter and a two-layer chassis
Low-noise, low-voltage power circuit and a switching power supply
Tonearm achieving high Initial-motion sensitivity
High-rigidity body and high-damping silicon insulators for smooth sound and isolation from various vibrations
Turntable Section
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Drive Method
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Direct Drive
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Motor
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Brushless DC motor
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Turntable Speeds
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33-1/3, 45 and 78* rpm
* The turntable speed will be 78.26 rpm when set to 78 rpm.
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Pitch Adjustment Range
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±8% and ±16%
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Starting Torque
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0.32 N・m (3.3kgf・cm) (2.86 lbf-in)
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Build-up Characteristics
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0.7 s. from standstill to 33- 1/3 rpm
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Braking system
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Electronic brake
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Wow and Flutter
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0.025% W.R.M.S.
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Turntable Platter
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Aluminum diecast, Brass and Rubber
Diameter：332mm (13-5/64")
Weight：Approx. 3.6kg (7-15/16lbs) (Including a rubber sheet)
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Tonearm Section
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Type
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Static Balance
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Effective Length
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230mm
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Overhang
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15mm
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Tracking Error Angle
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Within 2° 32' (at the outer groove of 30cm(12") record)
Within 0° 32' (at the inner groove of 30cm(12") record)
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Offset Angle
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22°
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Arm Height Adjustment Range
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0 - 6mm
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Stylus Pressure Adjustment Range
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0 - 4g (Direct Reading)
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Headshell weight
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Approx. 7.6g
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Applicable Cartridge Weight Range
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(without auxiliary weight)
5.6 - 12.0g
14.3 - 20.7g (including head shell)
(with small auxiliary weight)
10.0 - 16.4g
18.7 - 25.1g (including head shell)
(with big auxiliary weight)
14.3 - 19.8g
23.0 - 28.5g (including head shell)
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Cartridge Mounting Dimension
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12.7 mm (1/2") interval
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Head Shell Terminal Lug
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1.2mmφ 4-pin terminal lug
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Terminals
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Audio Output
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PHONO (Pin Jack) x 1
EARTH TERMINAL x 1
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General
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Power Supply
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AC220-240 V, 50/60 Hz
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Power Consumption
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For UK
10 W (ON)
0.3 W (OFF)
For other countries
10 W (Power ON)
0.3 W (Power OFF)
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Dimensions (W x H x D)
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453 x 173 x 372 mm
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Weight
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Approx. 13.0kg
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Operating temperature range
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0℃ to +40℃
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Operating humidity range
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35% to 80% RH (no condensation)
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Accessories
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Turntable, Turntable sheet, Dust cover,
EP record adaptor, Balance weight,
Auxiliary weight, Head shell, Overhang gauge,
Screw set for cartridge, PHONO cable,
PHONO earth lead, AC mains lead, Screw set for turntable,
Owner's Manual
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