SAT FAC numbers

[Michel Lachance]

Terry,

I understood that John did was simply to enter the stretch numbers im the 
SAT in order to see which stretch offset he would get on both ends.  Of 
course, he could only tune the piano on which the numbers were taken or 
anyone alike.

Michel Lachance, RPT

00 21:39:33 -0800
>
>I thought the stretch numbers would vary depending on piano and/or scale 
>design. The person who sold me the SAT has over 90 different stretch tuning 
>pages that have different deviations. Wouldn't numbers also differ due to 
>human error, such as imperfect tuning of unisons while in FAC mode, and/or 
>not COMPLETELY stopping the light dots? These may be silly questions, but 
>I'm still learning. Also, could some SATs be in need of calibration?
>
>Terry
>
>
>On Sun, 30 January 2000, John Ross wrote:
>
> >
> > Hi Terry,
> > I used a SAT with FAC to get the figures I sent. (-11.2 and +21.4)
> > When I used my SAT lll, I get -19 and +22.0, like you. I mostly use my 
>SAT
> > lll,
> > the SAT with FAC is the one in my shop, which I used.
> > I guess it needs a check up.
> > Regards,
> > John M. Ross
> > Windsor, Nova Scotia, Canada.
> > ----- Original Message -----
> > From: "Farrell" <mfarrel2@tampabay.rr.com>
> > To: <pianotech@ptg.org>
> > Sent: Sunday, January 30, 2000 8:09 PM
> > Subject: Re: SAT FAC numbers
> >
> >
> > > Woohhhaa! What is going on here? I punched in the three FAC numbers on
> > both
> > > my SAT I (FAC-equipped) and SAT III and got A0=19.0  and C8=22.0. This 
>is
> > > different from the previous two posts. How on earth can we be getting
> > > different results? Is this the state of AccuTuner use? Am I doing
> > something
> > > wrong? Please reply prior to my heart attack. Thanks......Argh!
> > >
> > > Terry Farrell
> > > mfarrel2@tampabay.rr.com
> > >
> > >
> > > ----- Original Message -----
> > > From: "John Ross" <piano.tech@ns.sympatico.ca>
> > > To: <pianotech@ptg.org>
> > > Sent: Sunday, January 30, 2000 3:39 PM
> > > Subject: Re: SAT FAC numbers
> > >
> > >
> > > > Hi,
> > > > I tried your FAC #'s and I don't get your results.
> > > > Are you sure you are stopping the lights with the SAT set to F5, 
>then
> > > > changing the octave to F6, and stopping the lights with the cents
> > button?
> > > > Stop the lights on A5, change octave  to A6, then use cents button. 
>On
> > the
> > > > C6, stop then change to C7, and stop with the cents button.
> > > > When you set the SAT to A4, it is actually reading A6, this is where
> > your
> > > > didcrepancy is coming in. I think if you tune it and check it with 
>the
> > SAT
> > > > on page 0, and A4,it would show you the lights as being still.
> > > > I get A0  -11.2   and C8  +21.4, using your #'s.
> > > > Regards,
> > > > John M. Ross
> > > > Windsor, Nova Scotia, Canada
> > > >
> > > > ----- Original Message -----
> > > > From: <pianolover@worldspy.net>
> > > > To: <pianotech@ptg.org>
> > > > Sent: Sunday, January 30, 2000 3:43 PM
> > > > Subject: SAT FAC numbers
> > > >
> > > >
> > > > > hi all,
> > > > >
> > > > >
> > > > >              I just bought a used SAT II which has the FAC 
>feature,
> > but
> > > > I'm a
> > > > >              little stumped. I set and stored my 3 FAC stretch
> > numbers.
> > > > After
> > > > >              that I strip muted my piano (Baldwin 40" console), 
>and
> > when
> > > I
> > > > got
> > > > >              to A4, I noticed the cents deviation was 5.8! 
>Souldn't A4
> > > > ALWAYS
> > > > >              be perfect at 440? So I went back and re-entered the 
>FAC
> > > > again, (i.e.,
> > > > >              tuning one string of A4 while the SAT is at "A5 and 
>Zero
> > > > cents",
> > > > >              the up 1 octave to A6 on the SAT, then playing A4 
>again,
> > > but
> > > > stopping the
> > > > >              dots with the cents buttons) but each time, A4 was
> > > diviating
> > > > about
> > > > >              the same amount: 5.8 cents sharp.  Is this to normal 
>for
> > a
> > > > stretch
> > > > >              tuning? Can I adjust the SAT to 0.0 at A-4 WITHOUT
> > throwing
> > > > all the
> > > > >              other calculations for the stretch out of whack? BTW, 
>my
> > 3
> > > > stretch numbers are:
> > > > > F3= 17.1
> > > > > A4= 5.8
> > > > > C6= 3.6
> > > > >
> > > > > -16 @ A0 to +32.4 @C8 is the low/high stretch.
> > > > >
> > > > >
> > > > > Thanks.
> > > > >
> > > > >              Terry
> > > > >
> > > > >
> > > > > ______________________________________________________________
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> > >
> > >
>
>
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