The largest piano in Yamaha’s CX series, the C7X measures an enormous 227cm or 7’6″, which allows it to perform with unparalleled power while retaining the tonal beauty and clarity for which Yamaha pianos are famous. The piano of choice for performing arts venues and recording studios, the C7X is the best in its class.
It is from the ongoing search for perfection that traditions emerge. For almost half a century, Yamaha’s world-renowned C Series grand pianos have evolved through a gradual process of refinement. The CFX full concert grand piano was built on this knowledge, techniques, and experience, with craftsmen pouring everything they knew into the creation of an instrument that took bold new steps in piano design. The CX Series extends this work further, providing a clear sound with a clean attack, sparkling tone, and transparent harmonies, all encased in an elegant, flowing form.
The end result is a series of instruments that is refined in tone, yet bold in design, the product of a dedication to innovation that allows Yamaha to remain true to its musical heritage. CX Series pianos represent progress that is commensurate with Yamaha’s 125th anniversary year – progress that will transform any room in which you play into a concert hall.
The new soundboard
A violin is built around a beautiful body with three-dimensional swellings and a delicately curved shape, which is similar to the three dimensional concave design in a piano soundboard called the ‘crown’. The manufacture of this crown is pivotal to the crafting of any piano, and is thus of paramount importance to piano engineers in addressing the problem of how to transmit the vibrations of the strings from the soundboard into the surrounding air efficiently. Yamaha has taken experience accumulated through many years of crafting pianos and combined it with unsurpassed engineering ability to ensure that the soundboard always provides superb projection. The resulting design capitalises on physical phenomena unique to the craft of piano-making, to create a soundboard assembly with a structure that allows it to vibrate easily, something that would not have been possible without the deep understanding of the traditional art of piano crafting that goes hand-in-hand with Yamaha’s experience and engineering know-how. The same techniques developed for gluing the soundboard, ribs, and bridge in the CFX are used for the C3X and above — models which require a great deal of projection — and the process of installing the resulting soundboard assembly into the piano body has been investigated carefully. This has resulted in dramatically improved projection and the unprecedented response that performers demand.
Revolutionary new music wire offers beautiful sustain and harmony
It is the music wire that actually creates the sound of a piano. While affected by its matching with the hammers, soundboard and body of the piano, music wire has a profound effect on the timbre and sustain of the instrument. The CX Series utilises music wire that produces a rich sound with a full complexity of overtones in its middle and upper registers. Coupled with the support from a solid foundation, this gives CX Series pianos a rich, harmonic sound.
Hammers based on those of the CFX Series
Great hammers are essential to producing a beautifully expressive, malleable sound. Yamaha, unlike most other piano manufacturers, produces most of its own high-quality components, and is constantly looking for new ways to use the abilities developed through doing so to give our piano hammers tonality, resilience, and power. The CX Series has also benefited from this research and development, and utilises the same felt as the CFX, adjusted to match the size of each instrument in the series. This ensures that all CX Series pianos possess a clear range of tonal colours and a nuanced, expressive sound.
Expertise in frame making
The frame in a modern piano must be able to withstand a total string tension in excess of twenty tons; not only does the frame work together with the wooden body 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,” developed over many years, to create some of the best piano frames in the world. During this time we have built up a storehouse of knowledge on factors, such as the manner in which controlling the temperature and composition of casting – and even the coating used on the frame itself – affects the acoustic characteristics of the piano. This is a major reason that Yamaha is able to ensure reliable quality when crafting our pianos.
Voicing and regulation breathes life into the piano
Pianos offer pianists only a limited amount of freedom; apart from the pedals, the pianist’s scope for expression is limited to the 10 mm travel of each of the 88 keys on the keyboard. Even so, the pedals combined with the speed and velocity applied to the keys, produces a range of tonal changes so broad that they cannot be reproduced with current digital technology. This is the true soul of an acoustic instrument, allowing the pianist to obtain an incredible amount of expression from just 10 mm of key travel.That is precisely why Yamaha devotes so much time voicing their pianos so that the intentions of the pianist are conveyed to the strings. In regulation, a craftsman adjusts the movement of the action so that it accurately transmits every nuance of the pianist’s touch. In voicing, the hammers, which cause the strings to emit sound, are pricked with a pick to create a balanced tone that will respond beautifully when played. Even today, in an era when technology continues to evolve rapidly, these tasks remain the domain of skilled craftsmen who ensure the high quality of these instruments, and are the main reason that Yamaha has remained one of the top piano makers in the world.