Hi, I would arrange for it to stay plugged in during the concert, or else add an uninteruptible power supply (like the ones for computers) to it. I'd add a bottom cover to the piano immediately. I recently measured a 5'10" (175 cm) grand. Room was 16% and humidity at the controller above the beams was 18%. This was in a classroom so there was no lighting to deal with. As a bonus, the instrument will also look esthetically more pleasing with a bottom cover. In an ideal world the piano would be under performance conditions (full stage lights etc) for 8 hours before the tuning began. At 10:32 PM 3/5/2005 -0500, you wrote: > > >If a Dampp-chaser system is installed in a piano that is only used for >concerts, what is the best schedule to observe for unplugging the >Dampp-Chaser, moving the piano on stage, and tuning? > >Here is the problem I see. The Dampp-Chaser will maintain the piano at a >fairly constant humidity, especially with a floor length cover over the >piano. But when the piano goes on stage, the lid is raised, and the lights >are on, the humidity as well as the temperature will change. I understand >that the effect of temperature change, especially from the lights striking >the strings is almost immediate, while the plate takes longer to warm up. >The effect from the humidity change is much slower since wood takes longer >to change its moisture content. > >As a practical matter, how soon before the concert should the Dampp-Chaser >be disconnected, and the piano moved on stage? And when should it be tuned? > >Looking forward to your responses. > >Jerry Cohen, RPT >NJ Chapter > >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives > > >-- >No virus found in this incoming message. >Checked by AVG Anti-Virus. >Version: 7.0.308 / Virus Database: 266.6.2 - Release Date: 3/4/2005 > > Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. Non calor sed umor est qui nobis incommodat mailto:pianotuna@yahoo.com http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK, S4S 5G7 306-352-3620 or 1-888-29t-uner
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