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Rim/Backframe
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Mahogany foot-piece soundboard lining and backboard. Specially-designed grand-type mahogany closing rim; unequaled vertical strength and stability and improved acoustics. Backposts have staggered spacing to enhance tone and provide support where needed.
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Braces/Posts
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Full-length laminated mahogany posts assure that the backframe will remain straight and consistent and tuning will remain stable. Mahogany fill-blocks between posts at the top and bottom of the backframe, capped with a mahogany backboard for positive vertical alignment. Solid filler blocks (no hollow spots). 5 posts. Total cross sectional area: 400 cm2 (62 in2). Thickness of post: 8 cm (3 1/8”). Width of post: 10 cm (4”).
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Pinblock
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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.
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Soundboard
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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 8 mm. Vibrating area: 1.11 m2 (1,721 in2). Closing rim evens out the soundboard’s response to all frequencies, eliminating “hot” spots. Emulates shape of grand soundboard.
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Ribs
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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: 10
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Bridges
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Treble: Solid maple, curved to fit the crown of the soundboard. Bass: Solid maple mounted to cantilevered base. Doweled, glued, and screwed to soundboard. One continuous base and treble bridge.
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Scale
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Overstrung: Lower tension scale for longer sustaining tone and longer life of the whole piano. 17,425 kg (38,415 lb) tension.
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Plate
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Cast from grey iron, bronze-painted and lacquered. Vacuum cast.
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Tuning Pins
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Nickel-plated steel, cut threaded.
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Strings
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Treble: Highest grade steel (in half size increments). Number of sizes: 14. Lowest tenor note: 28. Bass: Steel core wire wound with solid copper. Number 1 speaking length: 115.0 cm (45.3”)
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Hammers
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Premium wool topfelt over premium wool underfelt. Weight of topfelt: 9.4 kg (20.8 lb). Compression-wired to retain permanent shape. Mahogany moldings. Hammer-shanks from select resilient maple or horn-beam. Computer-designed pear-shaped hammers with reinforced shoulders result in superior tone, increased durability and greater voicing ability.
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Action
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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.
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Keys
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Genuine spruce, individually balanced and weighted. Synthetic ivory and ebony key covers. Length of key: 34.8 cm (13.7”).
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Keybed
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Made from laminated hardwood. Strong, rugged construction provides a solid mount for the keyframe and action allowing for precise and prolonged action regulation. Keybed thickness is 42 mm.
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Keyframe
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Spruce with hardwood inserts in the balance rail and front rail for added stability.
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Pedals
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Heavy solid castings. Soft (half-blow), damper (sustaining), and muffler.
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Other
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Music desk: Professional music desk. Two-position upper panel for tone escapement and solid music support. Fallboard: Soft fall fallboard. Casters: Solid brass casters.Locks: No locks. PropSticks: Top prop sticks.
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