Spruce Soundboard
At the Yamaha lumber mill and wood processing facility, the finest spruce is
quarter sawn; and less than 10% of the total is selected and reserved for Yamaha
piano soundboards. Solid spruce, rather than laminated spruce or poplar, is the
choice in all fine pianos for the best amplification of sound, best tone and
sustain.
Full Length Ribs
Yamaha reinforces the crown in its soundboards by using ribs that continue to
the edge of the soundboard, and are glued into the notched liner (or inner rim
on the grand piano). Reinforcing the crown ensures that the tone quality will
remain for years and years and improves tuning stability.
V-Pro Plate
Yamaha uses V-Pro (Vacuum Shield Mold Process) in casting the iron frame
(plate). V-Pro plates are stronger and visually more appealing. Critical
dimensions are produced more accurately than before.
Metal Action Rails
Yamaha engineering developed a unique Extruded Aluminum Alloy Action Rail
(bearing a Yamaha patent) that is one of the best innovations for improving a
piano action in the last 100 years. The usual fluctuations in wood rails that
effect touch, caused by periodic weather changes, are eliminated allowing
stable, long-lasting action regulation.
Balanced Action
Each key of a Yamaha piano is individually tested and measured for the
corrections needed to obtain uniform "down weight" pressure. Yamaha actions play
correctly and uniformly. This balancing helps ensure a lifetime of superior
touch and control across the keyboard.
Uniform Key Travel
Yamaha designs all grand and vertical pianos to have the same key travel.
Regardless of size, type or model of Yamaha piano, the keyboards will always
feel the same.
Spruce Keys
Yamaha uses Spruce for the keys on all models of pianos. Spruce is very light
and possesses a very high ratio of strength to weight. It is ideal for key
construction, even though its cost is greater than either sugar pine or bass
wood. Yamaha keyboards respond quickly providing fast repetition for the most
intricate piece of music. Yamaha keyboards withstand heavy use over years of
fortissimo passages.
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