Seems to be mostly A4=440 although some traveling orchestras request 442. I keep the non-climate controlled D at 441 per Steinway recommendation for ease of accommodating requests. More so because shining hot lights on it and filling the hall up will quickly bring the piano back to 440 and even lower. I've thought about keeping it at 442 but this 5yo D already has an obvious (finger in your eye) case of STDD and increasing tension only exacerbates the problem. I keep the climate-controlled one at 440 and the stage-manager has been thorough about keeping it plugged in. It doesn't drift, probably because it is already warm when the lid is opened. Interestingly enough, it is about the same age and doesn't have noticeable STDD. Maybe a stiffer batch of spruce or perhaps, the Dampp-Chaser system does what it is advertised to do... Andrew Anderson On Apr 28, 2009, at 9:01 AM, Renee Ingeberg wrote: > I was wondering what the standard concert pitch is these days. In > certain parts of the world, there are different meanings on the > subject. What is the concert pitch for orchestras in the U.S.? > The question comes up every once in a while...and is always followed > by some discussion. > Also, does anyone know how much one raises the tension ( in > kilograms) in a grand when raising the pitch from 440 to 442? > > Renee >
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