The frame in a piano must be able to withstand a total string tension in excess of twenty tons; not only does the frame work to support the string tension, but it has a profound effect on the instrument’s sound. Yamaha makes its own frames, relying on a method of casting referred to as the “vacuum process,” the world’s first such technique developed over many years in creating some of the best piano frames. Yamaha has built a wealth of knowledge on controlling factors like temperature, casting composition, and frame coating, ensuring reliable quality and superior acoustic characteristics.
