FAC Averaging

[Joe & Penny Goss]

Hi Avery.
Using your numbers resulted in the following readings:
   
 B               S             Average
C1 -12.2      -14.2        -13.2
C2 -3.8        -4.6           -4.2
C3  -2.4       -2.7           -2.6
C4  3.0         3.5            3.2
C5   3.2        3.5            3.4
C6   4.2        4.8            4.4
C7   14.2     15.7           15.0
C8   36.2      41.2          38.9
F6   7.1        8.0            7.6
Seeing this my vote would be to tune the S to the average.
Always on the level
 Joe Goss
----------
> From: Avery Todd <atodd@UH.EDU>
> To: pianotech@ptg.org
> Cc: caut@ptg.org
> Subject: FAC Averaging
> Date: Tuesday, November 17, 1998 1:38 PM
> 
> List,
> 
>   I'd like to know if anyone using a SAT has ever tried averaging the FAC
> readings when tuning two pianos together. I'm referring primarily to
> teaching studios/practice rooms with two pianos in them.
>    Each one would not be tuned to it's best possible tuning, but would
they
> sound better together and OK separately?
>    My normal practice is to tune the "lead" piano its best and tune the
> second piano to it. That's what I do in concert situations. Each piano
has
> its best tuning stored on a page of memory and whichever is the second
> piano gets the same tuning as the lead piano.
>    What brought this up is yesterday I tuned a Steinway B and a Steinway
S
> in a private piano teacher's home. The pianos are a little better matched
> in size in our two-piano rooms here at school, so it got me to thinking.
>    This time, I went ahead and tuned the 'S' to the same tuning I used
for
> the 'B' and it sounded fairly good. And in this situation, it'll probably
be
> OK.
>    For your information, the FAC readings were:
> 
>   'B'                        'S'
> F = 7.1                    F = 8.9
> A = 8.3                    A = 9.2
> C = 6.3                    C = 7.2
> 
>    Just wondering. Thanks.
> 
> Avery
> 
>