Ryan Sowers wrote: > Its times like this that I wish PTG had a research and development > department to answer some of these basic questions once and for all! We're it, all of us. And it doesn't seem to matter how many times it's gone over, the answer is STILL not what we were taught to believe, so that can't be it. > I would argue (and no, I have no empirical evidence whatsoever so take > it for what its worth:!) that there must be a number of different > factors effecting pitch drop when pianos are pulled up to tension. Must there? What are they? If you have no idea, why must the numerous factors be there? > When you consider what the teeniest changes to the tuning pin do to > pitch, why wouldn't the teeniest movement in the bridges, plate, > pinblock, rim, etc, have a noticeable effect? Yes. > I agree that the theory that the drop is caused by the soundboard being > pressed down is probably mostly a myth. It sounds good, and seems easy > to explain to clients, but I doubt it contributes much. The very fact that it happens in pianos without measurable crown or bearing (observable and measurable by anyone who might incredibly harbor a secret wish to actually know), ought to clear it up somewhat. Ron N
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