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Boston uprights offer the same standards of excellence which characterize all instruments designed by STEINWAY & SONS. A Boston upright will give you the same opportunities to express your musical skill as a grand.
In comparison to other pianos, the Boston has less string tension. This reduced string tension allows for a larger, tapered soundboard, creating longer sustain, and more singing quality in the tone (as well as longer piano life). A wealth of other engineering enhancements, including optimal placement of ribs, braces, and bridges, also contribute to the Boston’s superior tone and greater stability.
Each Boston piano soundboard is crafted of Sitka spruce, long proven to be the most resonant material available. Boston soundboards are also precisely tapered, which allows them to vibrate more freely. In conjunction with a number of special technologies — unique patents of STEINWAY & SONS — the result is a powerful, sustained tone.
Five massive full-length laminated spruce posts. Total cross sectional area: 450 cm2 (69.8 in2). Thickness of post: 9 cm (3 ½”). Width of post: 10 cm (4”).
The massive backposts are tenoned into upper and lower mortise rails, creating a substantially strong frame. Backpost locations are staggered for proper support. Solid filler blocks and maple backboards make this back frame assembly even stronger. A grand-style hardwood closing rim is attached to this foundation, onto which the soundboard and ribs are glued. This structure provides unequaled strength and stability and improved acoustics.
Octagrip™ pinblock made of 11 layers of hard rock maple – glued in different grain angles of 60 degrees – affording the tuning pins greater stability under tension and enabling the piano to stay in tune longer.
Close and straight-grain solid (not laminated) Sitka spruce. Minimum 3 annual growth rings per cm (minimum 8 per inch). Tapered from treble to bass, to provide a rich tone in the bass, and a brilliant and crisp tone in the treble, creating a well-balanced and lasting tonal response. Tapered from 9 mm to 7 mm. Vibrating area: 1.01 m2 (1,559 in2). Closing rim evens out the soundboard’s response to all frequencies, eliminating “hot” spots. Emulates shape of grand soundboard.
Made from durable spruce to assure strong and constant support of the strings bearing down on the soundboard. Ribs are fully let-in to the liner to support the important soundboard crown and prevent the piano from losing its tone. Number of ribs: 11
Treble: Vertically laminated hard rock maple with a solid maple cap, curved to fit the crown of the soundboard. Bass: Solid maple mounted to cantilevered base. Doweled, glued, and screwed to soundboard.
Overstrung: Lower tension scale for longer sustaining tone, beautiful tonal clarity and depth, and longer life of the whole piano. 16,006 kg (35,213 lb) tension.
Cast from grey iron, bronze-painted and lacquered.
Nickel-plated steel, cut threaded.
Treble: Highest grade steel (in half size increments). Number of sizes: 10. Lowest tenor note: 29. Bass: Steel core wire wound with solid copper. Number 1 speaking length: 110.0 cm (43.3")
Premium German Würzen topfelt over premium wool underfelt, pressed over hornbeam moldings into Steinway & Sons designed shape, compression-wire reinforced; hammer-shanks from select resilient horn-beam; resulting in superior tone, increased durability and greater voicing ability.
Solid maple (all wood, no plastic) for all moving parts. Extruded aluminum action rails for increased stability and less frequent regulation. Dependable direct-blow design.
Solid spruce, individually balanced and weighted. Phenolic sharps and acrylate white key covers. Length of key: 39.2 cm (15.4”)
Keybed made of spruce and birch. Strong, rugged construction provides a solid mount for the keyframe and action allowing for precise and prolonged action regulation. Keybed thickness is 42mm.
Spruce with hardwood inserts in the balance rail and front rail for added stability.
Soft (half-blow), muffler, and sustain (damper) pedals.
Music desk: Professional solid music desk.
Casters: Double-nylon casters.
Locks: Fallboard and top locks.
Prop Sticks: Top prop sticks.
Bench: Matching wood-top bench.
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