Richard, Exactly! How did it sound then? The only test that is worth its beans in sound is, the sound itself. however, from the original condition of the piano I doubt that any test would be in the ball park. In order for the duplex scale tuning procedure to have an effect, the piano must be, ( in my experience ) up to pitch and stable. Otherwise there are too many variables to makean appraisal of the value of tuning the duplex scale, in my opinion. Dan Franklin
This PTG archive page provided courtesy of Moy Piano Service, LLC