Vertere SG-1 Super Groove Turntable

The Vertere SG-1 Super Groove Turntable is designed and built to exactly the same high standards as the RG-1 Reference Groove. It is built using the best possible materials and the highest standards of precision; every single component is specially engineered and custom built by Vertere.

Directly derived from the unparalleled RG‐1 main bearing, the SG-1 main bearing performs second only to the RG‐1. It is based on the same design geometry, and incorporates similar precision engineering techniques to the RG1, being made to the highest Vertere standards. Both RG‐1 & SG‐1 main bearings are lubricated with the Vertere proprietary formulated L‐1G record player main bearing oil.

It takes one glance at the record player motor assembly to see the sheer depth and innovativeness of its design. It cleverly uses precision bearings to articulate a proprietary aluminium alloy motor housing, which keeps the motor continuously synchronous, thus achieving constant belt tension. Simply put, it drives the platter at constant speed without any interference.

Vertere SG-1’s platter assembly is a unique two-piece super precision machined aluminium alloy design that provides friction-only damping of the platter assembly. The main platter has a critically designed surface profile on its top side that perfectly matches the underside of the reference platter insert. In fact, the two parts fit so precisely that the assembly creates a linearly damped, non‐resonant structure.

It is absolutely vital that the record player motor is powered and controlled faultlessly to ensure a musical and high-fidelity performance of the record player. The new Tempo takes control of the record player motor and provides it with smoother drive, which results in lower noise and distortion. Its internal circuit, as with the reference motor drive, is uniquely microprocessor based, providing a pure digital sine wave which is then converted to analogue via an on-board DAC. Two waveforms are derived, a cosine and sine, which are then amplified using two bridged amplifiers to power the motor.

Specifications 

Type: Belt Drive
Motor: 24 Pole Synchronous, 6 Point Body Contact Support, Spindle Support Acetal Ball Bearing
Motor Mount: Acetal Platform – Articulated, 2 Ball Race Bearings and Silicone Motor Spring
Pulley: Super Precision Aluminium Alloy
Drive Belt: Precision Ground Polymer
Platter: Super Precision Aluminium Alloy, Single Piece, 3 mm Bonded Acrylic Record Interface
Bearing Spindle: Precision Hardened Stainless Steel, Roundness / Concentricity and Finish < 2 Micron
Bearing Housing: High Copper Content Phosphor Bronze, Clearance < 6.5 Microns
Plinth Structure: Clear Cast Acrylic, Optional Finishes, 30 mm top / bottom, 25 mm sub-plinth, 15 mm mid-plinth
Isolation System: 3 Stage Compliant, 2 Stage Rigid, 12 Decoupler Sets, 12 Tuned Silicone Ring / Bobbins
Motor Drive P/S: Precision Crystal Referenced
Speeds: 33.3 / 45 rpm (< 0.2 %)
Wow + Flutter: < 0.1 %
Rumble: < -85 dB