Quality, durability, reputation, ethics pride, accomplishment and standard adherence are only a few issues involved in thread. We all know that when the pitch of a piano is changed the piano will return 25% to 30% of the amount changed, going up or going down it is the same. 25% for those who tune unisons as they go and 30% for those who tune unisons last. If you are doing concert work and you need to change a nine footer from 440 to 442, a change of 8 cents, the piano will have to be tuned twice for a stable and correct tuning. If I am tuning little Mary Jane's spinet I will tune it twice if I have to make a 8 or 10 cent change. The quality of the end result is far more important to me than the time or effort required to make the tuning stable and in tune. It is safe to raise the pitch of a newish piano by 40 cents. Much more than that you risk over stressing the strings and shorten their sustain time. On older pianos (50 years or more) the limit should be dropped to 30 cents. Pianos that appear unsafe at any pitch should be tuned where they are BUT pay particular attention to the feel of the pins, string rendering, stability, stiction (string adherence to contact points), sound, etc., to determine if the piano should be left where it is or next time be raised to A=440. Pianos that can be should be tuned to pitch always. It is our responsibility to fulfill the customers needs even when they have no idea what those are or should be. That IS our job. Newton
This PTG archive page provided courtesy of Moy Piano Service, LLC