Specifications and Features
Scale/Size
Boston grand pianos are wider, particularly at the tail or back, than other
pianos of the same length. This allows a bigger soundboard area, producing
bigger sound. Lower-tension scaling for longer sustaining tone, and longer
life of the whole piano. Duplex scaling adds harmonic richness and longer
sustain to the tone.
| Boston Piano Model and Size | Equivalent in Other Makers' Size |
|
GP-156 5'1"/156 cm GP-163 5' 4"/163 cm GP-178 5'10"/ 178 cm GP-193 6'4" / 193 cm GP-215 7'1" / 215 cm |
5'5"/ 165 cm 5'8"/ 173 cm 6'2"/ 189 cm 6'8"/ 205 cm 7'6"/ 228 cm |
Soundboard
Solid (not laminated), straight-grained Sitka spruce with a minimum of 8
annual growth rings per inch (3 per cm.) for proven superior tone quality.
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. Soundboard ribs are of
spruce and are fully let-in to notched liner (uprights) and rim (grands)
to support the soundboard crown and prevent the piano from losing its tone.
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.
Pinblock
and Tuning Pins
Wisconsin Hard (Rock) Maple, laminated multidirectionally, grips tuning
pins from several directions to assure a tight fit, uniform pressure, and
smoother tuning. 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. "Overstringing" allows maximum speaking length of bass strings.
Boston Piano Models
| Grands | Uprights |
|
GP-156 5'1"/156 cm GP-163 5' 4"/163 cm GP-178 5'10"/ 178 cm GP-193 6'4" / 193 cm GP-215 7'1" / 215 cm |
UP-118S 46"/118 cm UP-118E 46"/118 cm UP-126E 49"/125 cm UP-132E 52"/132 cm |
Plate
and Finishes
Cast from gray iron to the most precise tolerances. "Over-engineered" to provide strength to support 20 tons of string tension. Cabinet parts finished in a wide variety of natural wood veneers with durable polyester or polyurethane top coats.
Action
All wood (no plastic) for proven durability, faster repetition, and heightened responsiveness and control. Rosette-shaped, extruded aluminum action rails and flanges mean increased stability and less frequent regulation. Computer-designed, pear-shaped hammers with reinforced shoulders deliver optimum performance from the Boston piano scale design. Piano keys are spruce, and are individually balanced and weighted.
Structure
All wood used for making parts is naturally cured and kiln dried to the
precise moisture content specified, to assure precision and long life. Grand
piano rims and upright case components are laminated Philippine mahogany,
for stability, strength and long life. Computer-designed radiating grand
braces of laminated Philippine mahogany provide stronger, triangular support
compared to parallel designs. Uprights similarly employ staggered backposts.
This rigid support increases tuning stability, soundboard crown retention
and long piano life.
Warranty
The Boston Piano Company stands behind each Boston piano with a comprehensive warranty providing you with peace of mind for the future. Specific details vary by country. Consult your Boston piano dealer for a copy of the warranty and service program which applies to you.