Hi, I sometimes have rural churches that are much cooler during the week. The only strategy that works is for the heat to be at "service" temperature for 24 hours before I tune. I have experimented with resistance heating controlled by a thermostat inside the piano, but have not had satisfatory results, even with a damppchaser and back cover. (the heating was added after to try to stabilize the piano). When the temperature is low I consistantly find the piano is sharp, and unevenly sharp. Of course the unisons that we all so dearly love to be "clean" are also compromised. For concert halls I found that preheating the piano with a 500 watt spot light for about 3 hours gave me the best results. Tune 'em while their hot? Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. Non calor sed umor est qui nobis incommodat mailto:pianotuna at yahoo.com http://www.donrose.ca/ 3004 Grant Rd. REGINA, SK, S4S 5G7 306-539-0716
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