Stored Tunings v/s FAC

[John Ross]

Hi Don,
I have also found FAC readings change with humidity, that is the main reason
I use a fresh FAC each time. I don't know, why I forgot to mention that in
my first post.
I am talking about a University situation, with a variety of pianos.
I keep on meaning to take the FAC in conjunction with the humidity and
temperature, and table it, for each piano. But I always seem to forget.
Best regards,

John M. Ross
jrpiano@win.eastlink.ca
----- Original Message -----
From: "Don" <drpt@sk.sympatico.ca>
To: <pianotech@ptg.org>
Sent: Sunday, December 23, 2001 2:18 AM
Subject: Re: Stored Tunings v/s FAC


> Hi John,
>
> I believe that humidity effects require fresh FAC's each and every time in
> my location. But some few areas are extremely stable as far as humidity.
Or
> if the piano is properly equipped with a DC system, the effects are
limited
> to the changes in barometric pressure which changes the partial pressure
> and therefore the moisture content of the sound board.
>
> At 01:54 PM 12/22/01 -0400, you wrote:
> >Hi,
> >Now that the ETD's are being discussed, I have a question.
> >I can see initially where the programmed tunings for certain models,
> >would be an advantage, since the FAC was not available.
> >But I feel it is better to do a new FAC each time for a different piano.
> >The exception to a new FAC each time, would be as someone has said,
> >they do, is to tweak it each time till it was 'perfect', on a specific
> >piano.
> >Let me know what you think.
> >Regards,
> >John M. Ross
> >jrpiano@win.eastlink.ca
> >
> >
> >
>
> Regards,
> Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T.
>
> mailto:drpt@sk.sympatico.ca
> http://us.geocities.com/drpt1948/
>
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