[pianotech] Pitch raise criteria

[Jim Busby]

Terry,

I'm positive it was for pitch raises. "Pianos seem to want to be pitch raised from A0 to C8". I wrote that down. Tried it, And never really like it...

Regards,
Jim




________________________________
From: pianotech-bounces at ptg.org [pianotech-bounces at ptg.org] On Behalf Of Terry Farrell [mfarrel2 at tampabay.rr.com]
Sent: Sunday, August 02, 2009 4:48 PM
To: David Ilvedson; pianotech at ptg.org
Subject: Re: [pianotech] Pitch raise criteria

Dave - are you sure Dr. Sanderson advocated TUNING from A0 up to C8 - or was that just for pitch raising? Seems to me he either advocated starting in the temperament section or that it didn't matter. If the piano was at (or very close to) the proper pitch, what the heck difference could it possibly make what order you tune which string?

Or maybe I'm all washed up (perhaps more likely than I care to think.....).

Terry Farrell



Several years before I made the jump to using an ETD, I sat in a class
taught by Dr. Sanderson (inventor of the SAT). He had conducted a study to
see which tuning order produced the most stable tunings. The answer was to
start at A0 and tune unisons as you go all the way to C8. That was one of
the reasons I went to an ETD.

Some are worried such a procedure will cause the plate to crack from uneven
stress. Plates are so over-engineered I doubt it could make any difference.

Dave Stocker, RPT
Tumwater, WA
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