Thanks, everybody, for your responses. br ----- Original Message ----- From: "paul bruesch" <paul at bruesch.net> To: pianotech at ptg.org Sent: Wednesday, January 21, 2009 7:42:25 PM GMT -06:00 US/Canada Central Subject: Re: [pianotech] tuning cold pianos Per the exam prep manual, 1hz variation in A4 for every ten degrees difference from 72F. e.g. A440hz at 72F becomes A441hz at about 80F, A442hz at 90F, A439 at 60F... but I'm likewise (as has been mentioned) certain that it won't be a uniform drift. Paul Bruesch Stillwater, MN On Wed, Jan 21, 2009 at 4:47 PM, John Formsma < formsma at gmail.com > wrote: -- JF -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090122/46d20726/attachment.html>
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