Specially-designed grand-type mahogany closing rim unequaled vertical strength and stability and improved acoustics. Mahogany foot-piece soundboard lining and backboard. Massive staggered backposts help provide superb tone and maximum stability, ensuring the piano will last, tunings will be more stable, and piano tone will be enhanced for the years and decades to come.
Boston backpost locations are staggered - located where the string tension is greatest, instead of neatly equidistant. A thinner soundboard in the bass area vibrates more freely, resulting in a richer, fuller tone.īoston backposts are massive - providing a solid foundation for the resonating soundboard and tensioned vibrating strings, thus helping create a beautiful tone. The Boston soundboard has tapered thickness from bass to treble. In 1936, Steinway patented the diaphragmatic soundboard, which was designed to be thicker in the middle and gently tapered to the edges.
The soundboard is solid and not laminated, which creates the best resonance and projection of sound. High-grade, straight-grained, quarter-sawn spruce is used for the soundboard's resonant qualities and high strength-to-mass ratio.
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