Duplex scaling adds harmonic richness and longer sustain to the tone. Tapered, rather than uniformly thick, to vibrate more freely and provide more volume. Specially designed closing rims make the soundboard irregular in shape, and improve its acoustical properties. Bridges Vertically laminated with a solid maple cap in grands, and reverse crowned in uprights and grands, to create better transfer of sound from bridges to soundboard. Nickel-plated blued steel resists rust and enhances appearance.
Cut threads create hundreds of teeth that grip the pinblock and keep the piano in tune longer.
Strings Bass strings wound with solid copper, and Roslau treble string wire of the highest grade steel provide superior tone. Plate and Finishes Cast from gray iron to the most precise tolerances. Cabinet parts finished in a wide variety of natural wood veneers with durable polyester or polyurethane top coats. Rosette-shaped, extruded aluminum action rails and flanges mean increased stability and less frequent regulation. Piano keys are spruce, and are individually balanced and weighted.