Grand Piano Petrof Special Collection Madrona

Grand Piano Petrof Special Collection Madrona

Mã sản phẩm: GPSCM

Thương hiệu: Petrof

Mô tả

Following the requests of a customer we set about developing this prototype.
While building it we discovered that we could apply the technique of marquetry to a very high standard.
The technique of marquetry is the acme of the joiner’s art, which we now possess, enabling us to produce almost any design by using various veneers and colourings.

Thông số kỹ thuật

Length (mm)	1590
Width (mm)	1525
Height (mm)	1025
Weight (kg)	309
Sound board material	Resonance spruce wood
Active area (m²)	1,019
Ribs (number, shape)	10, spherical
Soundboard construction	wedgewise tapered 9 – 7 mm
Cast iron plate	Wet sand casting
Surfacing of iron plate	light gold metallic paint, diamond effect
Pin block – material	Multiplex beech plywood, density 800 – 850 kg/m3
Inner rim material	9 laminas – beech, birch
Inner rim thickness	35 mm
Wooden frame posts	3 longitudinal
Descant post material	spruce
Cut off bar (corner cross rib)	no
Outer rim – material	Sandwich, solid alder wood core, plywood coated, inner venner Ebony Makassar
Bridge – treble	solid maple wood
Bridge – bass	solid maple wood
Bridge pins	steel – ground tips
Agraffes material – number	brass, 1-59
Duplexess – front	gis2 – c5
Duplexes – rear	d2 – c5
Strings – material	steel wire Röslau Germany, cooper winding Degen Germany
Hitching of plain strings	double
Dampers – number	led.68
Action	standard – RENNER – PETROF
Hammer heads	RENNER original
Keyboard	Tangential sawn spruce wood, individually balanced with lead
Black keys	Ebony wood
Pedals	left – Unacorda (Piano) pedal, middle – Sostenuto (Prolongement) pedal, right – Sustein pedal
Legs and castors	standard legs, small unbraked castors
PETROF sign on right side wall	no
Felts colour	red + black
Hydraulic slow close fallboard mech.	yes