Eminent ET-II, Owner'S Manual, Page: 22 / 26

The measured results are usually an order of magnitude better than the results using a
tonearm and test record (conventional wow and flutter method). Further proof exists if you take
two tonearms, one straight line and one pivoted and mount them both on the same turntable. The
straight line tonearm will give a wow and flutter reading with the same cartridge/test record of
about 2/3 to ½ that of the pivoted arm (.03% < .07% to .05%). This is because the straight line
tonearm has a geometry advantage and lateral motion does not result in stylus longitudinal motion
along the groove of the record.
Another proof is to take two different cartridges, one high compliance and one low
compliance, and take measurements with both using the same turntable and tonearm. The reading
of wow and flutter will be different. All wow and flutter readings are higher than the rotational
consistency of the turntable.