Pitch and HTs

[Michael Jorgensen]

Hello List,
   Start with D or A-flat for historical temperaments in most cases.  If
these two pitches are equal to their equal temperament counterparts than
the rest of the piano will be close to the same overall pitch/tension. 
Typically these temperaments are symetrical around those two notes
i.e.for each pitch lower (Than in ET) there is another equally higher. 
If A is forced to be 440 than the rest of the notes will be skewed
resulting in an overall piano tension change.  This tension change is
likely why some people have complained that after tuning to an HT their
piano had to be retuned to ET with a pitch raising even though A was
left the same. 

-Mike Jorgensen RPT