In a message dated 12/16/99 3:21:34 PM !!!First Boot!!!, piano_tunertx@yahoo.com writes: << I understand and appreciate the extent to which setting the contiguous thirds F-A, A-C#, C#-F & F-A in a 4:5 ration sets the foundation of a good temperament (of the ET variety). Most of the bearing plans I've seen start with something like "set F3 to A3 to beat about 7bps, set C#4 to A3 to beat about 9bps, tune F4, test that the contiguous 3rds have a 4:5 ratio..." My question is this, having tuned the F's and the C# and noting that the ratios aren't working out quite right, how do I determine if the problem is the F's or the C#? Many thanks for your help. Jerry Hunt Associate Member PTG (shooting for RPT in 2000) Dallas, TX >> Jerry: Ratios have always confused me. I rarely know what they are talking about when I hear tuners talk about 1:2 and 4:3 and 7:8 ratios. This is my way of telling you that if C# - F isn't quite right, move the C# and see if it sounds better. If it does, check it with the A. If that interval sounds good, then the problem was the C#. If not then the problem was the F, and you need to adjust the C# again. Setting a temperament is more a matter of adjusting all four notes, (F, A C# and F), so that the contiguous thirds get faster, and the octave is in tune. If it isn't, then work until it is. Trying to figure out what ratio you're listening to will only make things more confusing. Just my 2 cents worth. Willem
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