Hi James: In my most recent attempts on my own Steinway L, I am now using 7.0, 10.5, 8.6 for stretch addition (mainly to the A4 number). I have used this in working out the Aural tuning method which I published earlier. The 5ths are purer now. Even tho' you can measure wider 3rds and 10th, as you listen to them, they are not really noticeable as to the increase in speed. You will however definitely notice the increase in the 4ths and the octaves as you tune, but not when you play. Jim Coleman, Sr. On Sat, 28 Jun 1997, pianoman wrote: > Dear Warren and list, > Yesterday I tuned an "L" #334513 and took some measurements. My measured > FAC numbers were > 1. Actual........................ 7.6, 9.5, 8.6. > 2. On Jim Colemans "L" they were 7.0, 8.5, 8.6. > 3. With Jim Colemans perfect > fifth change method I used... 7.0, 9.5, 8.6. > Here is what I measured. Using (2) I measured C3 to G3 -0.9c > C4 to G4 -01.5c > C3 to E3 +14.5c > C4 to E4 +14.6c > After this I switched by adding 1c to the A > in the FAC to go to #3 C3 to G3 -1.2c > C4 to G4 -1.6c > C3 to E3 +15.9c > C4 to E4 +14.1c > I guess I expected for the fifths to be closer to perfect. At least I > expected that there would be more difference between the two tunings using > a different value for the A. Maybe I am not testing these intervals > correctly? I used the instructions in Sanderson owners manual. For those > of you who have tried this are these figures in the ballpark to what you > have found.? It is hard to try to fit this in a regular tuning situation > but not impossible. I will try further on other instruments as I have > time. > James Grebe > R.P.T. from St. Louis > pianoman@inlink.com > "Time is the vehicle in which actions can take place." JG >
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