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Steinway Model 4510

45″ upright piano. Shown in Walnut. Also available in: Satin Ebony and Mahogany.

Features:
Hand-crafted in USA
Large Staggered Backposts
Diaphragmatic Tapered Spruce Soundboard
Mapes Strings
Vertically Laminated Bridges
Pear-shaped Hammers Made in the Steinway Factory
Radial Bracing
Patented Accelerated Action
All wood construction (No MDF)
Patented Octagrip™ Pinblock

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Description

Dimensions
Height 45 3/4” (116 cm)
Length
Width 58 3/8″ (148 cm)
Depth 25″ (64 cm)
Net Weight 480 pounds (218 kg)

Rim
Back Frame: Solid birch mortised foot-piece Solid birch soundboard lining. Solid maple closing blocks with expansion cuts; unequaled vertical strength and stability.

Braces
POSTS: 5 FULL-LENGTH tapered solid spruce with a volume of 3,100 cu. in. (50,780cm3); Assures that backframe will remain straight, promoting stable and consistent tuning. Strategically positioned with bottom ends tenoned into birch foot-piece for positive vertical alignment. Spruce fill-blocks between posts at top of backframe capped with solid birch backing board for positive horizontal alignment.

Pinblock
Hexagrip patented design; 7 laminations of quartered hardrock maple stock. Grain symmetrically distributed at successive angles of 45°, 90°, employing grain direction uniformly around the circumference of the tuning pin to provide the ultimate in pin grippage. As a result of this exclusive design, the tuning pin has smoother movement under torque, a more uniform retaining action for solid setting, and a piano which will hold its tuning longer.

Soundboard
Created like the soundboard of violins to give a free and even response throughout the entire scale, it is so constructed as to be 8 mm thick in the center and tapered to 5 mm as it approaches the rim and outer case before being DOUBLE CROWNED. This design permits complete freedom of movement, while acting as a homogenous unit to displace a greater amount of air, thereby creating a richer and more lasting tonal response. Close-grained, quarter-sawn Sitka spruce, a wood having unusual stability and vibrance under stress and vibration, is used exclusively for the soundboard.

Ribs
Made from durable, resinous sugar pine to assure strong and constant support of string down-bearing on the soundboard. Rib ends are hand-fitted into their mounting surfaces virtually locking in the important soundboard crown.

Bridges
Treble: Hard rock maple vertical laminations capped with solid hard rock maple; planed to prescribed height, graphite coated, drilled, and notched by hand for precise individual string bearing. Design defies splitting. Bass: Solid rock maple mounted to cantilevered and splined base. Maple doweled, glued, and screwed to soundboard.

Scale
Overstrung; combination agraffe; Front AND rear duplex. Tension: 36,900 lbs. (16,605 kg)

Plate
Sturdy gray iron; filled, CNC-milled, and sealed; bronzed and lacquered.

Tuning Pins
Premium blued steel with rust-resistant, nickeled heads.

Strings
Treble: Twelve whole & one-half sizes from high-tensile Swedish steel. Bass: Swedish steel core wire wound with pure copper. Longest, pressure bar/bridge: 43 1/2″ (110 cm)

Hammers
Premium wool top felt over premium wool under felt; treated to resist insects and moisture. Compression-wired to retain permanent shape. Hard rock maple hammer moldings and shanks.

Dampers
Horizontal-cut premium wool for effective dampening. Hornbeam heads for endurance.

Action
White, quarter-sawn hornbeam parts are bushed with specially treated wool action cloth for freedom from friction. Parts are anchored in hard maple rails. Dependable, Direct-Blow design permits ALL parts of the action to lie above the brass capstan screws.

Keys
European spruce, individually weighed-off. Chip-proof, stain-resistant coverings for naturals; slip-proof, delicately abraded ebonized sharps. Tough, durable Linden wood buttons reinforce keys over balance rail permitting maximum tonal power with every strike. Longest: 15 1/2″ (39.4 cm)

Keybed
Made from planks of stable, quarter-sawn poplar. Horizontal planks are permanently mortised together, while their ends are permanently mortised into vertical planks, presenting a vented system for humidity escapement and necessary expansion and contraction. Hand-milled to be flat and true correlating with keyframe for snug fit. Strong, rugged construction provides a solid mount for keyframe and action allowing for precise and prolonged action regulation. Thickness: 1 3/4″ (4.45cm)

Pedals
Heavy, solid brass. Soft, sustaining, and full sostenuto.

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