----- Original Message ----- From: "Andrew & Rebeca Anderson" <anrebe@zianet.com> To: <davidlovepianos@earthlink.net>; "Pianotech" <pianotech@ptg.org> Sent: Monday, May 31, 2004 7:45 PM Subject: One pass Large Pitch Raises Safe? > I've been following a discussion regarding a large pitch-raise of 100 cents > or more being done in one pass. Is this safe? Do you run the risk of > damaging a plate by, say, concentrating tension in one area as you begin to > pull the pitch up. I'm not talking about strings which are risky in their > own way. I've understood that when there is such a large tension > adjustment to be made that it is safer to spread it out as octaves, such as > all the A's then all of the E's then all of the C's, then fill in the rest > after which you do a fine tune. Am I being overly cautious? Actually, that is the way I've always done it. I'm not an aural tuner, but I do use my ears. First I set "A4" at 11 cents sharp using the accutuner. Then I tune by octaves (all strings) toward the treble and then to the bass by ear. The ear gives a sort of stretch. Next set "A#4" to 10 cents sharp and repeat the sequence till you get to "G#5". For a nominal pitch raise this gets you close. I suppose for the serious 100+ pitch raise you could use 22 cents to start, but I've usually just used 11 cents. I don't do much tuning or pitch raising but this works for me. Carl Meyer Ptg assoc Santa Clara, Ca. > Andrew > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives
This PTG archive page provided courtesy of Moy Piano Service, LLC