Specifications Speaking Length of #1 bass string 47.5" Hammer Weight 22 lbs. Soundboard Dimension 2369 square inches Material Spruce Back Post Material Spruce V-Pro Plate Yes Bridge Material Hard Maple Pinblock Material Hard Maple Tuning Pins Cut thread Center Pedal Mute Metal Action Rail Yes Seasoned for Destination Yes Soft-Close Fallboard Yes Number of Keys 88 keys Pedals Soft Pedal, Mute Pedal, Damper Pedal Finishes Polished Ebony, Polished Mahogany Height 52" Width 60" Length 26" Weight 517 lbs.
Thanks to comprehensive redesign, these world-standard instruments are better than ever, with numerous advances in materials and construction. Refined scale designs and components improve tonal performance, while other modifications enhance strength and durability. Extra-wide music desks provide plenty of room for sheet music. And the top-of-the-line sets extraordinary standards of elegance and excellence, incorporating concepts adapted from Yamaha grand pianos.
An expansive soundboard and acoustic chamber give the 131 cm (52") U3 extended power and projection, with the peerless tonal and expressive control of the legendary Yamaha action.
Soundboard and Frame
Special rib configurations add strength to the soundboard, while back post and other advances further enhance rigidity, resonance and structural stability.
U Series hammers use materials specifically selected for each model to provide optimum tone production, response and long-term durability.
A damping mechanism, formerly used only in grand pianos, prevents the fallboard from dropping abruptly onto the keyboard, guarding against accidental injury or damage.
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