[pianotech] tuning cold pianos

[Barbara Richmond]

Thanks, everybody, for your responses. 



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----- 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 

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