Actually, at that church the keep the air/heat on all the time "for the sake of the organ." Oh well! dave *********** REPLY SEPARATOR *********** On 11/29/00 at 10:40 AM Conrad Hoffsommer wrote: >Don, Dave, > >Don, At 08:47 11/29/2000 +0000, you wrote: >>Unlike pianos organs are affect by the barometric pressure. It is not >>uncommon for a "great" flute stop to change 30 cents in pitch overnight, >>atleast where I live. > >Right. >The reeds, as well as the flues, change constantly with changes in >temperature and humidity as both affect the density of the fluid passing >through them. There is a great chart in Audsley's "Art of Organ Building" >which shows the pitch of flue pipes as the temperature changes. > >>Dave, At 06:47 AM 11/29/00 -0600, you wrote: >> >I regularly tune the piano in a church here that has a pipe organ. Organ >>tuners seem to have a different concept of "tuning". I've measured several >>different "A"s from different ranks and found they range from +18.0 to >>-4.0. This is not counting "celeste" stops. This was measured 2 days >>after the organ "tuners" had finished their work. I just tuned the piano >>at 440, and explained that this was the best we could hope for under the >>circumstances. > >You can feel like a one-armed paperhanger when you try to tune different >divisions of the organ together. The organs here at school are not so much >a problem since the heat/cooling is on constantly. I have one church organ >job, however, where I insist that the church be at the Sunday morning >temperature and the swell shutters open at least three, if not twelve, >hours before I tune it. -BTW, I still have to touch up the reed stops at >school every week - they float faster and farther than the flues. > >It is a waste of everybody's time and money to be chasing pitch as the >temperature changes. What was the church like when you were there? Heat >blasting because they just cranked it up when you walked in the door? You >may have had difficulty tuning the piano for the same reason. > >Tune the piano to 440 and like that olde stopped clock, it will match twice >a day. > > > > >Conrad Hoffsommer - Music Technician -mailto:hoffsoco@luther.edu >Luther College, 700 College Drive, Decorah, Iowa 52101-1045 >Voice-(319)-387-1204 // Fax (319)-387-1076(Dept.office) > >Education is the best defense against the media. David M. Porritt dporritt@swbell.net Meadows School of the Arts Southern Methodist University Dallas, TX 75275
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