We're having some trouble with our Hamburg Steinway D going out of tune during performances(it seems to be getting worse) and wonder if the extreme low humidity in the hall could be a factor. The entire building is without humidity, so the piano has been at 25% RH for a month now. It DOES jump up to 33%, but it pretty much stays at 20-25%. The question is: Will constant low humidity cause tuning instability? I'd appreciate answers from those who have had experience with these conditions. Thanks... John Minor Piano Technician University of Illinois jminor@uiuc.edu
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