audio clip
Download MP3 audio

Logo: all rights reserved




Flemish harpsichord
after "Joseph Johannes Couchet, 1679"

The widening of compass and disposition in a harpsichord was called "Ravalement"; many instruments of the Ruckers-Couchet family were adapted in this way in order to keep them up-to-date with the changed musical tastes of the 18th century. This practice produced some of the finest instruments that still survive, in particular those of the Parisian makers F. Blanchet and P. Taskin.

The Couchet instrument from which this ravalé copy has been taken has three registers that pluck only two choirs of strings; both 8' pluck the same string. The original harpsichord is kept at the Smithsonian Institution in Washington D.C. The version that I present here has the usual 18th century disposition, with independent strings for every register.

The outside of the case can be decorated to imitate red marble with hand-made paper and Latin mottoes inside, on request. I also build copies of the instrument with five-octaves compass (FF-f3), or with the original disposition and compass (C-c3, 49 notes).


Length 210 cm

Width 90 cm

Compass: GG-e3, 58 notes

Two 8' registers, one 4' register, buff stop

Sides of poplar

Soundboard of quarter-sawn spruce, gilt rose

Keyboards: bone naturals and chromatics of stained-oak

Wooden jacks and guides

Case painted - two colours (false marble on demand)

Flemish turned stand on demand

Music desk




Clavicembalo da Joseph Joannes Couchet 1679

Clavicembalo da Joseph Joannes Couchet 1679

tavola armonica
Decorazione della tavola armonica di Michela Dal Lago

About my instruments....

quotations and reviews


Home           Site-map            Links

Augusto Bonza
Antichi Strumenti a Tastiera
Via Kennedy 9 - 20029 Turbigo (MI) - Italy
Tel/Fax +39 0331899251

Last changed: June 2013

Maker and restorer of harpsichords and other early keyboard instruments. Twenty-five years experience of harpsichord making. High quality instruments built according to historical principles.
keywords: clavicembalo harpsichord clavecin cembalo kielflügel spinetta spinet épinette augusto bonza tastiera keyboard clavier restauro virginal virginale restoration clavicembalo a due tastiere clavicembalo a due manuali antichi strumenti a tastiera spinetta a forma d'ala arpicordo fortepiano viennese fortepiano claviciterio clavicembali hammerflügel organologia organology costruzione making costruttore maker facteur museo museum bach albinoni telemann rameau scarlatti couperin gabrieli italiano francese fiammingo italian flemish french german tedesco italien français flamand purcell Castello Sforzesco strumenti musicali musical instruments rebuilding cembalaro restauratore organologo double manual manuale manuali restauration conservation conservazione clavicembalo registro registrazione register registre salterelli jacks sautereaux acero maple cipresso cypress abete rosso spruce risonanza tavola armonica table d'harmonie soundboard rosetta rose rosette rosace liuto lute lautenzug ruckers taskin celestini baffo floriani dominicus pisaurensis cristofori gravicembalo ottavino gräbner, zell, claviorgano, ravalement, ravalé, kirkman, shudi, klaviatur, somiere, diatonico, diatonique, cromatico, feinte, werckmeister, kirnberger, vallotti, temperamento, accordatura, jeu, clavicembalo, clavicembali, cembalaro L>