[CAUT] How long to stabilize??

Fred Sturm fssturm at unm.edu
Wed Feb 18 10:06:34 PST 2009


Hi Diane,
	There is an education process you will need to go through - educating  
your faculty and administration. The general misconception is that  
"It's a new piano, so it should stay in tune better than our old  
ones," which is, unfortunately, absolutely the opposite of true.  
First, there is the initial year. It can help to talk about replacing  
a string on a violin, guitar, etc, and how that takes a good while to  
settle. And note that the same happens with a piano, and actually to  
less of an extent, but with the violin you are tuning it every day,  
and many times the first few days. With the piano you are having  
unrealistic expectations if you think a new one will stay in tune over  
the first year - it's  gradual shift, but quite noticeable from week  
to week and month to month.
	After the first year, the new piano will adjust to humidity swings  
(ie, go out of tune) more than an older one, because the wood is  
newer. I have three D's, 8, 27, and 45 years old. No question which is  
the most stable - 45 - next most - 27 - and least - 8. They are all  
"stable" but the newer one will have worse unisons after a rain, etc.  
Same is true of studios. Older ones tend to be somewhat more stable,  
as a rule of thumb (though there is a lot of individual variance). And  
it is quite possible that the UST may sound worse when out of tune  
(from humidity) than the piano it replaces, due to more of the "unison  
skew" factor, where left and right strings move in opposite directions  
in the treble (as the most obvious symptom).
	So you have to talk to them, and lay it out. "No, the new pianos are  
fine. They are acting normally. This is what you can expect" (and why).
	When it comes to how often to tune, that's a question of setting  
priorities and matching resources (time and money) to the situation.  
Spreading the suffering around in an even manner once the top  
priorities have been met the best they can be. I have been through  
times when I simply abandoned certain practice room uprights for a  
couple years - they'd be in tune, more or less, when they got back to  
the time of year I had last tuned them. Then I'd cycle them back into  
the schedule and cycle others out. You do what you have to do.
Regards,
Fred Sturm
University of New Mexico
fssturm at unm.edu



On Feb 18, 2009, at 5:51 AM, Diane Hofstetter wrote:

> I know many of you have written in the past about the problems with  
> tuning stability in brand new loaner pianos from manufacturers.   
> Fortunately the college where I am tuning has purchased these  
> pianos, so they won't disappear just when we get them settled in.
>
> However, my question is this; in a practice room in a small college,  
> how long, or how many tunings do you think it will take for the  
> school's new Kawai UST-9's  to stabilize in tuning?
>
>  The pianos were  delivered directly to the college from the  
> warehouse and uncrated there.  Before that they spent two days in  
> the truck. It was snowing outside.
>
> They have Dampp Chaser heating rods and HD humidistats installed,  
> but my data logger, which was in their new Boesendorfer between  
> December 4 and February 4, showed nothing but too dry.  Every time I  
> have tuned in the practice rooms, my humidity gauge reads 36-38%  
> RH.  I do expect the humidity to go up to around 60% in the spring.
>
> Each piano has received one pitch adjustment--usually pitch raises,  
> but two of them took lowering--and one tuning since the beginning of  
> February when they were delivered.  Already I want to tune a couple  
> of them again, but this is not in the budget or mindset of either  
> the store that sent me out or the college who now owns the pianos.   
> They all think the tunings should be stable already.
>
> Experienced opinions gratefully received!
> Diane Hofstetter
>
>

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