>Another technician mentioned using a 5 gallong humidifier plugged into the humidistat. That might work if the >amperage was not more than the humdistat is made to handle. Since we service a concert grand kept in less than ideal conditions for a state symphony, I'm interested in what happens when the piano is removed from the humidified area for a concert. I'm not arguing the notion of doing it: and in some circumstances such as undependability of personnel to monitor the humidifier on a dampp-chaser, the humidifier might be a wise choice. And I am pro dampp-chaser. But a concert piano is unique in that it doesn't remain in its storage state for rehearsals and concerts. My concern about either method is this: when you put the piano backstage & on stage for rehearsals/ concert, does the piano then go through radical changes in the action and in the tuning? My guess is it depends on how quickly the humidity is lost in the soundboard and in the critical areas of the action. Please -- some feedback from those who have tried to maintain humidity level on a concert piano. Wally Wilson
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