Direct Drive Turntable System
SL-1200G

Coreless Direct Drive Motor

Conventional analogue turntables have problems with degradation in sound quality caused by factors such as minute speed vibration during rotation and rotation irregularity called "cogging." In the SL-1200G, the use of a newly developed coreless direct-drive motor with no iron core eliminates cogging. Also, the twin-rotor construction reduces the bearing load while maintaining high torque and also reduces minute vibration during rotation. These factors enable reproduction of the warm, exquisitely detailed sound etched on analogue records.

Concept of Coreless Direct Drive Motor

High-precision Motor Control Technology

The application of motor control technology developed for Blu-ray devices and switching the drive mode depending on the operational status of the motor achieve a high-starting torque and high-speed stability.

Three-layered Turntable Platter

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.

Concept of Three-layered Turntable Platter
Graph of Damping CharacteristicsGraph of 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.

Photo of Balance Adjuster

Balance Adjuster

Photo of "BALANCED" sticker indicating balance adjustment completed

"BALANCED" sticker indicating balance adjustment completed

Photo of Exhaustive measurement performed to examine whether the surface deflection of the platter is within limits

Exhaustive measurement performed to examine whether the surface deflection of the platter is within limits

High-sensitive Tonearm

The tonearm employs lightweight magnesium which has a high damping effect, with cold drawing improving the characteristics of the material and achieving the high-precision required. In addition, high initial-motion sensitivity is attained by employing the traditional Technics gimbal suspension construction with horizontal rotation axis and the vertical rotation axis intersecting at a single central point, as well as high-precision bearings using a cut-processed housing.

Photo of High-sensitive Tonearm
Photo of High-precision Bearings

High-precision Bearings

Photo of Supplied auxiliary weights support a wide variety of cartridges

Supplied auxiliary weights support a wide variety of cartridges

Four-layered Cabinet Construction

A hairline-processed, 10-mm-thick top panel of immaculate aluminium has been added to the previous three-layered construction of aluminium die-cast, BMC, and heavyweight-class rubber on the SL-1200MK5. This four-layered construction combines high rigidity with a high-quality finish and feel.

Concept of Four-layered Cabinet Construction

High-quality Terminals

The use of brass-milled, gold-plated phono terminals and ground terminals prevent degradation in sound quality while enabling the easy attaching and detaching of cables. Also the use of metal shielding construction inside the case reduces the effects of external noise.

Photo of Brass-milled PHONO Output Terminals

Brass-milled PHONO Output Terminals

Photo of AC Input Terminals (Detectable Input)

AC Input Terminals (Detectable Input)

SL-1200G
Direct Drive Turntable System

Show the enlarged photo of the front of SL-1200G
Show the enlarged photo of the rear of SL-1200G

Turntable section

Type
Direct Drive Manual Turntable
Turntable Speeds
33 1/3, 45, 78 rpm
Adjust Range
±8%, ±16%
Starting Torque
3.3 kg・cm (2.8 lb-in)
Build-up Characteristics
0.7 s. from standstill to 33 1/3 r/min
Wow And Flutter
0.025% W.R.M.S. (JIS C5521)
Rumble
78dB (IEC 98A Weighted)
Turntable Platter
Brass and Aluminum diecast combined
Diameter:332mm (13-5/64")
Weight:About 3.6kg (7 15/16 lb) (Including rubber sheet)

Tonearm Section

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 - 6 mm
Stylus Pressure Adjustment Range
0 - 4 g (direct reading)
Head Shell Weight
Approx. 7.6 g
Applicable Cartridge Weight Range
(without auxiliary weight)
5.6 - 12.0g
14.3 - 20.7g (including headshell)
(with small auxiliary weight)
10.0 - 16.4g
18.7 - 25.1g (including headshell)
(with large auxiliary weight)
14.3 - 19.8g
23.0 - 28.5g (including headshell)
Cartridge Mounting Dimension
JIS 12.7 mm Interval
Head Shell Terminal Lug
1.2 mm φ 4-pin Terminal Lug

Terminals

Audio Output
PHONO (Pin Jack) x 1
EARTH TERMINAL x 1

General

Power Supply
AC120 V, 60 Hz
Power Consumption
14 W Approx. 0.2W (Standby)
Dimensions (W x H x D)
453 x 173 x 372 mm
17-27/32 x 6-13/16 x 14-21/32 inch
Weight
Approx. 18 kg
Approx. 39.7lbs
Accessories
Turntable, Turntable sheet, Dust cover, EP record adaptor, Balance weight, Auxiliary weight(S), Auxiliary weight(L), Head shell, Overhang gauge, Screw set for cartridge, PHONO cable, PHONO earth lead, AC power supply cord, Screw set for turntable, Owner's Manual

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