according to the design of the turntable and their positioning within the chassis 12 in the prototype turntable each of the mounting pods weighs about 5 kg and is made of aluminum filled with lead shot so that they do not u201c ring u201d however any other well damped material could be used for example cast iron has also been found to be a suitable alternative the size of the mounting pods is also chosen to provide some separation between the magnets and the tonearm in order to prevent the magnetic field from the magnets influencing the small voltage signal being produced by the pickup cartridge and carried by wires within the tonearm thus the height of the mounting pods may be selected to provide an appropriate amount of separation to further reduce stray magnetic fields each of the magnets is mounted within an open metal cup which serves to create a substantially closed magnetic circuit when the magnet pairs are in close proximity with a small gap referring now to fig6 to 10 of the drawings there is shown another turntable 100 utilizing an isolation assembly in accordance with an alternative preferred embodiment of the invention the turntable 100 has had its top and side covers removed so that the internal components of the turntable can be easily seen the turntable 100 includes a chassis 112 a platter not shown and a tonearm mounting board 116 the tonearm mounting board includes an aperture 118 within which a tonearm not shown may be.