You have a major problem here that no DC system in the world is going to help enough with. A 65 % change in humidity in the same day is just plain too much period. You need to get the university to either take steps to lessen the problem in the hall itself... or understand that they might as well give up on having tuned instruments for concerts and recitals unless they set off an hour just before each use. And even then they are at risk. That kind of humidity swing is just plain ridiculous. No instrument in the world will survive healthily for more then a few years of that kind of environment. Cheers RicB Hi list, We have a classroom/recital hall with a huge humidity problem. Has anyone else had this problem: The room seats about 200 and has a Steinway D from the late 70's and a harpsichord. The room can change by 30-40% or more in a day! Over the T-Day weekend I put in one of those small humidistat from Pianotek and it showed a range of 24-80%!!! Not only are my tunings worthless for recitals if I tune in the morning and the concert is in the evening (as some days, that is the only time the room is available), but it has got to be wrecking havock on the instruments. It doesn't have a piano life saver system in it, and I wonder how much it would help with such wild swings. I and all the faculty have complained about it (apparantly for years prior to my getting here this year) and nothing gets done. Can I do more that just cover them and go ahead and put a DC system on it? They do have thick blanket style covers on them. Sweating to the oldies in Lincoln....
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