Every once in a while I would get a bum number with my SAT - one that just made no sense. My suggestion is throw that number out, insert a reasonable number, and see how the tuning sounds. Then add or subtract DOB as needed. I don't know what it means, but I have certainly seen such readings. Terry Farrell ----- Original Message ----- From: "Mike Kurta" <mkurta@adelphia.net> To: <pianotech@ptg.org> Sent: Wednesday, May 29, 2002 7:15 AM Subject: Re: SAT and K&C SAT and K&CHi Dave: I too, have seen an occasional negative FAC number, and I also don't know what it means. I'd be interested in knowing. FWIW, on a vertical, in small print, I write the FAC numbers on the hammer moldings or on the sides of the hammers if its a nice new piano, and on grands, I record the numbers to the right of the tuning pins on the plate with a fine point marker pen. The music desk covers these small numerals when in place, and it eliminates measuring the numbers next time I come to tune. They change ever so slightly, or not at all on the same piano. Will look for you all in Chicago.......Mike Kurta ----- Original Message ----- From: Dave Doremus To: pianotech@ptg.org Sent: Wednesday, May 29, 2002 12:11 AM Subject: SAT and K&C I tunes a brand new Kohler and Campbell KIG-47 today. Aside from all the damper problems I was struck by one thing. When doing the FAC on my SAT III (too many initials I know), the F reading came out -2.2 cents. I was expecting maybe +18. First time I've seen a negative reading. I did the pitch raise (25 c) with that calculated tuning and then did a pickier pass by ear and it came out fine. But I was curious if anyone else gets negative inharmonicity readings on cheap pianos and what it might mean.....
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