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Boston Model UP132E PE

The largest Boston upright piano at a height of 52″ (132 cm), the UP-132E Performance Edition provides a rich and powerful sound that rivals many grand pianos.

Specifications and Design

DIMENSIONS

Height: 132 cm (52″)
Width: 154 cm (60½”)
Depth: 67 cm (26¼”)
Net Weight: 302 kg (664 lb)

BRACES

Full-length laminated spruce posts assure that the backframe will remain straight and consistent and tuning will remain stable. Spruce fill-blocks between posts at the top and bottom of the backframe, capped with a maple backboard for positive vertical alignment. Solid filler blocks (no hollow spots). 5 posts. Total cross-sectional area: 477 cm2 (73.9 in2). Thickness of post: 9 cm (3½”). Width of post: (3) 9 cm (3½”), (2) 13 cm (5⅛”).

SCALE

Overstrung: Lower tension scale for longer sustaining tone and longer life of the whole piano. 17,633 kg (38,875 lb) tensio

RIBS

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: 11

BRIDGE

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

STRINGS

Treble: Highest grade steel (in half size increments). Number of sizes: 13. Lowest tenor note: 30. Bass: Steel core wire wound with solid copper. Number 1 speaking length: 121.7 cm (47

HAMMERS

Premium wool topfelt over premium wool underfelt. Weight of topfelt: 9.5 kg (20.9 lb). Compression-wired to retain permanent shape. Mahogany mouldings. Tapered hornbeam hammershanks. Computer-designed pear-shaped hammers result in a superior tone, increased durability and greater voicing ability.

ACTION

Premium wool topfelt over premium wool underfelt. Weight of topfelt: 9.4 kg (20.8 lb). Compression-wired to retain permanent shape. Mahogany mouldings. Hammer-shanks from select resilient maple or horn-beam. Computer-designed pear-shaped hammers with reinforced shoulders result in a superior tone, increased durability and greater voicing ability.

KEYS

Genuine spruce, individually balanced and weighted. Synthetic ivory and ebony key covers. Length of key: 40.3 cm (15.9″).

PLATE

Cast from grey iron, bronze-painted and lacquered. Vacuum cast.
Tuning Pins Nickel-plated steel, cut threaded.

PEDALS

Soft (half-blow), muffler, and sustaining (damper) pedals.

KEYFRAME

Spruce with hardwood inserts in the balance rail and front rail for added stability.

OTHER

Music desk: Professional music desk. Two-position upper panel for tone escapement and solid music support. Fallboard: Soft fall fallboard. Casters: Solid brass casters. Prop Sticks: Top prop sticks. Bench: Matching wood-top bench.

Rim

Mahogany foot-piece soundboard lining and backboard. Specially-designed grand-type mahogany closing rim; unequalled vertical strength and stability and improved acoustics. Backposts have staggered spacing to enhance tone and provide support where needed.

Soundboard

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: 1.14 m2 (1,767 in2). Closing rim evens out the soundboard’s response to all frequencies, eliminating “hot” spots. Emulates shape of grand soundboard.

Bridges & Pinblock

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.