Steingraeber A-170 wing

 
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Steingraeber & Sons 170

We do not consider our parlor grand piano A-170 as a baby grand, because it impresses so much more with its sound than you would expect from an instrument of this size. Its sound reproduction and volume are definitely surprising for an instrument of this size. In physical terms, this phenomenon is based on its unusually wide tail that can accommodate very long bass strings.
The bass bridge also works without 'bridge construction', just like with large grand pianos! The sophisticated mechanism, constructed according to the highest standards, makes it a truly professional instrument. Top quality wood The quality of the wood is of vital importance to a piano builder and Steingraeber & Söhne therefore takes no risks. It is stored at a carefully controlled and constant humidity of 40%. Steingraeber uses exclusively 'Bergsfichte•', slow-grown spruce wood with the annual rings close together, at least 25 years old, for soundboards. "The soundboard is not only an amplifier, but also the source of the sound. Therefore, the resonance of the wood must correspond to the register of the piano for which it is used.

The solid red and white beech wood used for the bridges is left to rest for another three years after it arrives at the factory before it is processed. Principles of classical keyboard construction In order to achieve an optimal result, everything is joined together in the workshops at Steingraeber & Söhne to the nearest millimetre: soundboard, bridge, cast iron frame are adapted to the soundboard and not the other way around. The frame is first smeared with paint and the imprint on the pin block (which consists of 20 to 32 layers of beech wood, depending on the model) shows whether the connection for optimal communication between the different parts is perfect.
All this is extremely important because, as they say at Steingraeber: "the energy of the string must be transferred to the soundboard as efficiently as possible. With as little or no loss as possible." Therefore, even the smallest detail is not forgotten. For example, the pins that hold the strings in place on the bridge are made of exceptionally hard steel by a specialist company. The stitching of the bridge is also a job that requires special attention and craftsmanship.

At Steingraeber, it is still manual work that involves a lot of 'Fingerspitzengefühl'. Production process It is not only about top material and craftsmanship, time is also an important factor, which according to Steingraeber & Söhne is greatly underestimated. At Steingraeber & Söhne, the total production time of a piano takes four months, for a grand piano this is half a year.