mostly what I use. My bearings device are not like yours since I use a DIY recipe ( Diyumas) but they basically do what other commercial devices do.
I would use one right under the spindle, where's more movement is taking place. The other vibrational point is the transformer.
BDiament, from Audio Asylum and maker of another devices, suggest an equilateral triangle and the most separate as posible position.
BUT..you should consider experimentation before deciding where to put them at the end. Make sure they are well balanced, the power cord doesn't make unneccesary preasure against the sides and the base where they will be seated are well balanced.
I would use one right under the spindle, where's more movement is taking place. The other vibrational point is the transformer.
BDiament, from Audio Asylum and maker of another devices, suggest an equilateral triangle and the most separate as posible position.
BUT..you should consider experimentation before deciding where to put them at the end. Make sure they are well balanced, the power cord doesn't make unneccesary preasure against the sides and the base where they will be seated are well balanced.