personally my no. 1 design criteria for selecting a (belt drive) turntable is that the drive system uses the outer rim of the platter as the driven pulley. i will not purchase a turntable with a sub-platter as the driven pulley.
there are too many engineering advantages to a motor pulley / platter rim pulley system such as speed stability, resistance to stylus drag, motor life, bearing life and belt life.
all things being equal if a platter is 3X the diameter of a sub platter (for example), the above attributes are 3X better.
there are too many engineering advantages to a motor pulley / platter rim pulley system such as speed stability, resistance to stylus drag, motor life, bearing life and belt life.
all things being equal if a platter is 3X the diameter of a sub platter (for example), the above attributes are 3X better.