Hi John, Temperature changes in churches in my area are a *great* problem. As if they keep the heat even through the week. And what ever the situation consider a humidity control system. Be sure not to *stint* on the dehumidifier...go for the 50 watt rod At 08:48 AM 9/29/97 -0600, you wrote: >List: If you can give me some clues, hints, etc. regarding this >situation I would really appreciate it. > I have, over the past 3 years, been servicing a Bradford uprt. in >a nearby church. The first time I tuned it I had to lower pitch at A4 >42c. The lady that was in charge of the music for the church told me >that the last person that tuned the piano had had to raise the pitch >quite a bit and wondered if he had raised it too far. At the time, I >thought that was a possibility. However, since then, I have had to raise >the pitch 40c in the spring, then lower it in the fall, then raise it >again in the spring, etc. The pitch changes have been about equal each >time within 3-4c. I am stumped as the humidity has been between 30 and >45% each time that I have worked on it. Yesterday, I tuned the piano >again (fall tuning) to find that the instrument was 45c high at A4 and >closer to 80c high in the top octave(no wonder they said it sounded >terrible with their other instruments. The bass is staying rather stable >(rises and falls a few cents), but the tenor and treble really stray from >where they are supposed to be. > Before you ask, yes, I have tightened all available plate >hardware that goes into the wood structure. Tuning pins are nice and >tight, but not overly so. The piano is about 2 feet from a baseboard >heater which has a shield to protect the back of the instrument from >gross temp/ R.H. changes. > The church's flooring is wooden over a basement that also has a >piano in it. The downstairs piano stays nice and stable (+/- 3-4c). Is >it possible that the flooring is shifting enough with weather changes to >"tweak" the piano THAT far? > Any and all input regarding this will greatly be appreciated. > > Thanks in advance for any input that you can give in this matter. > > >John Fortiner > >e-mail: pianoserv440@juno.com > > Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T. "Tuner for the Centre of the Arts" drose@dlcwest.com 3004 Grant Rd. REGINA, SK S4S 5G7 306-352-3620 or 1-888-29t-uner
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