Robert Conrad, Registered Piano Tuner/Technician, Tucson, AZ

Tuning Articles

Mapping A3

This system uses the relationships of the prime octave (A3/A4) to the prime 5ths (A3/E4 & D4/A4) to determine the ideal widths for both the prime octave and the prime 5ths.   This relationship will be found using the A4 Numbers the 4th A4 Number, and 'Templates'. Continue reading

Mapping A3: Procedures

This procedure is for pianos whose 4th A4 Number is generally less than 2.0 c.  When the 4th A4 number is less than 2.0 c.,  the prime octave's 2:1 can be either expanded or contracted - based on what the prime 5ths dictate - and still remain less than 3.0 c. wide.  Most of the time on these pianos, the prime 4:2 octave will be either wide or pure. Continue reading

Mapping A0

Mapping A0 can be done any number of ways. It can be mapped however you like, but just like A1, once you have it where you want it, it's location must be measured using it's 4th partial, since the LC Spreadsheet uses the 4th partials for A0 - A4. Continue reading

Mapping the Treble with Templates

Our system uses the 4th partials from A0 - A4, and the first partials (fundamentals) from A#4 - C8. This partial arrangement makes mapping the treble very straightforward and easy. As in aural tuning, we use previously tuned reference notes from the lower half of the piano. A5 is the first 'treble' note to map. Using information from the A4 Numbers and some quick measuring and tuning of A5 using A3 and A4, a guess can be made at the location for both A5 and A6. A template is then selected as a starting point for mapping the treble. As the locations for both A5 and A6 are refined and notated, templates with the new settings are used to check the tunings for A5 and A6 as well as the Ds and Es in the 5th and 6th octaves. Continue reading

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Bob Conrad, Tucson, AZ

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