Modi Turntable – Bergmann Audio
Modi air supply for platter & air bearing tonearm.
Advantage of using air bearings
The platter is centred by a steel spindle, running in a very frictionless, low noise and hard-wearing polymeric bearing material, and floats on a thin air cushion, which lowers the mechanical bearing noise to an absolute minimum- if any. (A traditional bearing solution, which keeps the platter centred AND support the platter weight, makes a higher level of mechanical bearing noise, as the contact point between spindle top and platter, generates a very high pressure – and hereby noise.)
By floating on an air cushion, the platter also gains the advantage of very good isolation from the surroundings, the same way as the known -and very expensive- air-supported shelves, used in many high-end audio systems.
Also, the speed stability benefits from the air-supported platter. The musical flow is really extraordinary – not necessarily measurable but audible.