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SME Model 20/12 Precision Turntable with Series V-12 Tonearm

$35,995.00

Free Delivery in NZ
for orders over $100 or $5 under $100.

Product Description

Precision Turntable. 

A larger and more massive version of SME's well known Model 20/2. It will accept nine, ten and twelve-inch arms but is especially directed at the exciting Model 312S. This offers a performance some 27% better than a nine-inch arm in respect of angular error distortion. The wand and headshell are pressure die-cast in magnesium and are 27g lighter than they would be in aluminium. Probably the stiffest and lightest twelve-inch arms ever made these dual problems are at last addressed and on listening, the benefits of minimal tracking error and harmonic distortion are clearly revealed. A turntable should address the problems of extraneous vibrations. These emanate from numerous sources including air and structural vibration from loudspeakers, groove modulation, stray electrical fields and mechanical imperfections in moving parts. In the Model 20/12, superb instrument quality machining is allied with fundamental physics. The higher the mass and stiffness of a body the less it will flex and vibrate; the duration of a vibration can be shortened by suitable damping.

Model 20/12 weighs approximately 33.5Kg (73.7lb), significant in relation to its size because it is density that matters. For example, the same weight of metal spread over a large enough area would be aluminium foil! The sub-chassis measures only 20 1/2” (520mm) by 14 3/4” (375mm) but weighs 8.0Kg (17.6lb). Its thickness, 5/8” (16mm) resists flexing at low frequencies whilst high frequency resonance is attenuated by efficient extensional damping.

Model 20/12 has no `sonic footprint'. The sub-chassis is suspended on forty purpose moulded ‘O’ rings which ensure freedom from feedback. A large centrally placed fluid-damper disciplines sub-chassis movement with a pleasing sense of security when handling records on and off the platter.

In addition to a cartridge’s electrical output, mirror image acoustic signals reacted in the arm and record, will pass into the sub-chassis in the course of dissipation. However the usual closed loop design does not address the problem of their differing phase so in the Model 20/12 the structural interfaces concerned have received special attention to provide paths of the required impedance.

This control of vibration is fundamental to the design of the player and goes much of the way to explaining the stunning tonal and dynamic neutrality that it exhibits.

Features

  • Stable four point suspension.
  • Sub-chasis suspended on eighty strands of rubber in the form of forty purpose moulded ‘O’-rings.
  • Trimming screws for suspension adjustment.
  • Central fluid damper controls sub-chassis motion and offers resistive ground-path for acoustic signals.
  • For transport lock down screws secure the sub-chassis and seal the damper.
  • 19mm diameter main spindle machined from high-chrome steel hardened, ground and super finished. Runs in a sealed oil bath.
  • Reflex clamping system minimises record resonance.
  • 6.5Kg (14.3lb) machined platter with unique Isodamp face.
  • Generous use of extensional damping and resistive loop construction ensure sonic neutrality.
  • Adjustable ball feet with optional compliant inserts.
  • Four jacking screws built into the sub-platter allow the thrust bearing to be off loaded for transit.
  • Driven by a 3-phase, 6 pulse, inductance motor, with 8 pole Neodymium magnets and 3 integrated Hall position sensors.
  • The power supply houses an electronic controller using a high performance microcomputer, optimised for motor control. Closed loop speed control is implemented using a pseudo sine wave commutation sequence and a proportional-plus-integral (PI) algorithm.
  • New design incorporates a 4 layer surface mount technology pcb with on-board user adjustable speed variation control.
  • Large diameter strobe disc supplied allows precise adjustment of standard speeds.
  • Speeds ranges: 33.3, 45 and 78 rpm.

Series V-12 tonearm

Based on the multi-award winning Series V pick-up arm, the Series V-12 incorporates the same design and engineering that have made SME a byword for excellence. Coherent musical control is held over the entire frequency range in terms of tonal quality, stability and stereo imaging. Startling dynamic range, neutrality, structurally inert, the Series V-12 embodies every worthwhile feature in a pick-up arm.   The 12 inch tone-arm is pressure die-cast in magnesium complete with an Integrated headshell to eliminate tone-arm resonances in the audio spectrum and offers a 27% reduction in maximum angular error distortion over 9 inch models.   Listening: the benefits of minimal tracking error and harmonic distortion are clearly revealed.    

  • The 12in pressure die-cast tone-arm utilises the advantages of magnesium and exploits the reduction in maximum tracking error/distortion afforded by the greater arm length when compared with 9in models.
  • Internal constrained layer damps minute residual vibration leaving the tone-arm acoustically inert.
  • Fine machined cartridge platform, enamel free to avoid interface resonance.
  • Stainless steel cross shaft, ground and thread ground. Carried in massive yoke on Ø10mm precision ball races. Axes at record mean level to minimise warp-wow.
  • Dynamic balance. Graduated vertical tracking force control applies up to 3.0g x 0.125g VTF through resonance controlled spring.
  • Stainless steel vertical shaft, ground and thread ground, with integral Ø16mm flange to couple shaft and yoke.
  • Ø23mm steel pillar, heat treated, ground and honed, carries two Ø17mm precision ball races, widely spaced to resist tilt.
  • Anti-skate control operates through tension spring and filament. Dial corresponds with VTF and has a positive OFF position.
  • Lowering/raising control gives smooth positive action. Height of lift can be adjusted.
  • Subsonic lateral-mode damper can be instantly adjusted or cancelled
  • Dual-lock base provides movement control with high rigidity.
  • Tungsten-alloy balance carried on two-point suspension. Extra-low inertia design assists warp riding.
  • Underslung weight housing corrects centre of gravity and provides non-reflective tone-arm termination.
  • Swivelling, damped output socket minimises vibration transmission in sub-chassis use.    
  • Fine adjustment of horizontal tracking angle (HTA).
  • Reference lines on tone-arm facilitate VTA setting.
  • Fine adjustment of horizontal tracking angle (HTA).
  • Alignment protractor designed to provide HTA setting with greater accuracy.
  • Advanced jig/template system guarantees correct positioning  

"It delivers both precision and flow whilst delving into the deepest details with ease." - Hi-Fi Choice. Read review here.

"The lengths that SME's employees go to in order to make their products as precise and well finished as possible is uncanny." - Jason Kennedy, Hi-Fi+ Read review here.

    Specifications

    • Speeds ranges: 33.3, 45 and 78 rpm.
    • Dimensions: 520 x 375 x 173.5mm.
    • Packing: Substantial case. 
    • Net weight with power supply: 35.5kg (78lb) 
    • Shipping weight approximately: 45.5kg (100lb)