I strongly suspect that this is the case: That, all other things being equal, the deader a soundboard is, the more stable the tuning will be. Alan Eder -----Original Message----- From: Farrell <mfarrel2 at tampabay.rr.com> To: Pianotech List <pianotech at ptg.org> Sent: Sat, 22 Mar 2008 9:08 am Subject: Re: birdcage pitch? That´s pretty unusual. Is it possible that there is a relation between the stability and these 7 passes? My guess is not. I raised the pitch of an old upright Kimball more than 100 cents (don't remember exactly how much) about six years ago. One year ago I returned to tune it again (only needs tuning every 5 years) and it was right up to A440. I think a big ol' flat, dead soundboard has more to do with it than how many passes one uses to get a piano up to pitch. Terry Farrell -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20080324/76de9618/attachment.html
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