Audiophilepure

https://www.analogplanet.com/content/wilson-benesch-greenwich-turntable

As for the OMEGA Direct Drive motor, it was developed specifically for the GMT platform by way of a collaborative research programme involving Wilson Benesch engineers and academic partners from Sheffield Hallam University. The OMEGA employs a slot-less synchronous motor with a circumjacent radial force architecture, said to eliminate cogging and reduce torque ripple to “extremely” low levels. Its design is intended to deliver “smooth, stable” platter rotation without the noise and vibration associated with conventional belt, idler, or traditional direct-drive systems.

The 15in (diameter) motor incorporates 21 precision-wound coils and 14 NdFeB magnets, arranged to create a uniform magnetic field that governs rotor synchronicity without requiring complex speed compensation. A magnetic counterforce system reduces the effective dynamic mass acting on the Angstrom bearing. This is said to ensure Hertzian contact forces will remain “within safe limits” while allowing efficient energy transfer from the motor to the platter and surrounding structure.