I tell my churches to try to have it at normal temperature, or within five degrees if normal isn't practical.<div><br></div><div>Humidity changes won't affect the wood that quickly. Changes in humidity will cause tuning changes beginning after 24 hours or so.</div>
<div><br></div><div>From my general observation (not scientific study), for every 5º F there will be about 1 Hz difference at A4. That amount of change varies according to the size of the piano. If I come to a piano and it's 80º, I'll tune it flatter than A440, anticipating that pitch will rise as the temperature drops to 70º. How much flatter is somewhat a guessing game. Either I get it right on, or close enough so people don't notice it, or most people can't tell the difference and don't care all that much anyway. ;-)</div>
<div><br></div><div>--</div><div>John Formsma, RPT</div><div>Blue Mountain, MS</div><div><br><div class="gmail_quote">On Tue, Jul 24, 2012 at 2:12 PM, Laura Olsen <span dir="ltr"><<a href="mailto:ajoyfulsound@gmail.com" target="_blank">ajoyfulsound@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">So, how important is it to have a sanctuary at the temperature it's used at when you tune the piano? How fast does the wood take on or let go of the humidity? If it was 60% when I tuned it (and 86 degrees Fahrenheit) and it's only 56% when the A/C is on, how much will the piano change in pitch? I can ask churches to cool down or heat up the room to the appropriate level, but if they …forget... do I have to reschedule? I'd love to hear your opinions.<br>
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Thanking you in advance,<br>
<br>
Laura Olsen, RPT<br>
A Joyful Sound, Inc.<br>
Barrington, Illinois</blockquote></div><br><br clear="all"><div><br></div>
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