Marking the 10th anniversary of the direct-drive turntable


It has been 10 years since Technics introduced the world's first direct-drive turntable, the SP-10. When it was introduced, this turntable had less wow and flutter and better speed accuracy than the cutting lathes used to make records. And because the the drive system did not use rubber parts like belts and idler wheels, it insured that its excellent specifications would be retained for a long time.
Six years after the SP10, Technics brought out an improved version, with higher torque and quartz control. Today, more than 1500 of these SP-10mkII are used by broadcasters in 27 countries around the world.
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With the SL-10, Technics continues to lead the industry in turntable innovation. This new turntable represents as radical a departure from conventional design as did the SP-10 years ago.
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A COMPACT QUARTZ DD UNIT

with the dimensions of a record jacket

The aluminium die-cast cabinet opens up into upper and lower halves. The upper half contains the linear tracking tonearm, its drive control system, and a micro-computer electronic control block. The lower half contains Technics' integral rotor/platter DD motor, and its driving and quartz-phase-locked control circuit. Never before has there been this much advanced electronics and precision mechanical engineering technology in such a compact turntable system.

OPTOELECTRONIC SENSOR
for precision servo-control of the linear tracking tonearm
DYNAMICALLY BALANCED ARM DESIGN
allows both horizontal and vertical operation...
...with excellent tracking ability. An advanced coreless DC motor drives the arm and an optical sensor located near the stylus tip governs automatic operation. The optoelectronic system is based on deflection angle detection and is far more accurate than thos that operate near the suspension. Thanks to this system, cartridge/groove geometry is always maintained near the ideal relationship. There is virtually no lateral tracking error (± 0,1°) and therefore no need for anti-skating force device.
Instead of the ball bearings or rollers, this arm employs a slide bearing having a very low friction coefficient, to avoid undesirable vibrations and allow silent, smooth operation, and precise tonearm transport. The pivot ball bearing gimbal suspension, and dynamic balance system make it possible to use the tonearm on other than completely flat surfaces, even standing upright, without loss of superb tracking ability, while conventional linear tracking tonearms employing static balance system lack this capability and need precise adjustment in horizontal placement of the turntable.


TECHNICS 310MC CARTRIDGE

with coreless twin ring coils and pure boron pipe cantilever
BUILT-IN MC PRE-AMP

For this linear tracking tonearm, Technics developed a new moving coil cartridge. This new cartridge, the 310MC, features a coreless twin-ring coil structure that avoids the magnetic loss and distortion found in conventional MC cartridges that do employ cores for their coils. Thanks to the high rigidity and low mass of the pure boron pipe cantilever*, an incredibly low effective moving mass of 0,23mg is realized in this MC cartridge, making possible its extremely linear, flat frequency response and superb tracking ability.
Our unique TTDD damper maintains consistent visco-elasticity independent of ambient temperature, a feature rarely found in any high-performance cartridge.
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Built into the SL-10 is a low-noise MC pre-preamp section to allow the unit to be used with any preamp. The buil-in pre-preamp can be bypassed with a switch, should the user wish instead to use another pre-preamp or step-up transformer.


*Technics developed the world's first pure boron pipe cantilever in 1978 and furnished it in several high-end catridges. A new crystal growing technique is used to form pure boron pipe into which the diamond stylus is mounted by means of a laser beam drilling technology.

FEATURES
Technics' highly dependable integral rotor/platter DD motor with full-cycle detection FG servo system
Precision die-cast aluminium cabinet forming a sealed chamber
Dampened platter underside
AC/DC power supply
Record stabilizer for steady play
Strobe on outside circumference of the stabilizer
Buil-in pop-up 45rpm adaptor
Dial scale for postion of tonearm
Auto judgment of record speed
Auto lead-in & disc size selection
Search capability to control FF or REW movement of tonearm
Repeat from the beginning during play
Auto stop/return/cueing/muting/repeat