ALIQUOT 2014/06/04 　 There are a variety of mechanisms in pianos to make beautiful sound. You may have heard agraffs, all under felts, Renner hammer, and Ciresa sound board as one of them. Today, I would like to introduce ‘ALIQUOT’; another way of making better sound. Aliquot is another way of making a better sound by vibrating the forestrings (the string from tuning pins to barering) and backstrings (string from pedal spring sockets to hitch pins), both of which are usually not vibrated. Special string hinge enables strings to have overtone by adjusting the length of strings, and it makes pianos have brighter sound. Whereas aliquot is applied to many grand pianos, this mechanism is seen only in limited luxury models, such as YAMAHA UX1, YUS, YU50, and KAWAI K5, KU50, US60M.