The design permits complete freedom of movement while displacing a greater amount of air, creating a richer and more lasting tonal response.
Under this patent, the soundboard is gradually tapered from the center to the edge, permitting freedom of movement and creating a sound of unparalleled richness, sonority, and sustain.Ĭreated like the soundboard of violins to give a free and even response throughout the entire scale, the Steinway Model S soundboard is 8 mm thick in the center and tapers to 5 mm as it approaches the rim and outer case before being double crowned. The production of the Steinway Diaphragmatic Soundboard is based on a 1936 patent to achieve optimum performance in dynamic range and maximum sustain. To meet the highest quality standards, only superior Sitka spruce with a regular grain and prescribed minimum number of annual growth rings is acceptable. The soundboard lies at the heart of a Steinway grand or upright piano, which is why great care is needed both in its design and in the selection of the wood.
Large maple dowel ends provide a solid mount for adjustable brass touch-regulating screws. Crowned and reverse-crowned action frame gives a snug fit, intensifies key movement and prevents “slapping” during heavy playing. Horizonal and vertical birch planks present a vented system for humidity escapement. Durable Linden wood buttons reinforce keys over balance rail, permitting maximum tonal power with every strike. Chip-proof, stain-resistant coverings for naturals slip-proof, adbraded ebonized sharps. keysĮuropean spruce, individually weighed-off. Horizontal-cut premium wool for effective dampening with maple heads for endurance. Compression-wired to maintain permanent shape. Premium wool top felt and under felt treated to resist insects and moisture. Longest: Agraffe/bridge: 45½" (116 cm) hammers Treble: twelve whole & one-half sizes from high-tensile Swedish steel.īass: Swedish steel core wire wound with pure copper.
Premium blued steel rust-resistant, nickeled heads strings Made from durable, resinous sugar pine to assure strong and constant support of string down-bearing on the soundboard rib ends are hand-fitted. Overstrung combination agraffe Front AND rear duplex.
Note: Treble bell is not required in smaller grands of lesser tensions. Maple dowels fasten braces to rim & crossblock producing a single homogenous foundation upon which is built the tonal component. (17,202cm3) Spruce provides tensile strength with less weight. 3 solid spruce with a volume of 1,050 cu.
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