>We have been intrigued with this question of should I control the RH level of >the concert piano in a box or room off stage by controlling the environment >in the box or should I control it with a humidity control system in the >piano. > >My thoughts on this are, control the piano because this system can be used >right up to the start of the performance (or perhaps throughout the >performance if one doesn't mind the extension cord). It can llikewise be >started again right after the performance leaving just a short period for the >piano to gain or loose water. I have data which indicated a 17 cent pitch rise in 20 hours when a Dampp-Chaser unit was plugged in on a Steinway (6') Grand. The room RH was 4% measured with a Pschodyne (the one with the electric fan). Regards, Don Rose, RPT drose@sask.maple.net
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