Historical Tuning (Scala files) and stretch tuning
What it does
The Garritan Abbey Road Studios CFX Concert Grand uses Scala files (SCL) to achieve many scales and temperaments. Scala files are a commonly used standard for defining scales and temperaments, and a number of common and historical tunings are already included with your installation. The common tuning standard of Equal Temperament is selected by default.
You can learn more about Scala files at http://www.huygens-fokker.org/scala/scl_format.html.
Stretch tuning subtly flattens the low pitches of the piano and sharpens the high pitches. The lower or higher the pitch on the keyboard, the more the pitch is flattened or sharpened respectively. Stretch tuning is a standard piano tuning practice that helps keep the instrument more in tune with itself.
When the Stretch Tuning knob is in the center, you are hearing the natural intonation given to the CFX Concert Grand by Yamaha's piano technician. Turn the Stretch Tuning knob to the right of center to exaggerate the amount of stretch tuning, and turn it left of center to decrease the amount of stretch tuning.
If you need only to uniformly raise or lower the pitch of the piano, use the Pitch Standard menu or Fine Pitch box.

- Click the Advanced button. The Advanced view appears.
- Next to the Historical Tuning box, click the Set button
. The Please select Scala File dialog box appears.
- Scala files on Windows can be found in C:\Program Files\Garritan\CFX Concert Grand\Scales.
- Scala files on Mac can be found in Macintosh HD/Library/Application Support/Garritan/CFX Concert Grand/Scales.
- Select the desired Scala file (SCL), and then click Open.
- Click the Tuning Center menu, and then select the base note for your selected temperament or scale.
Just intonation with C5 as a center will sound different than just intonation with E4 as a center. The octave designation that follows the pitch name is important when there are either more than 12 or less than 12 pitches within an octave.

Experiment with stretch tuning in conjunction with the selected Scala file to maximize the effect.

- Click the Advanced button. The Advanced view appears.
- AdjustClick and drag the knob up or right to increase and down or left to decrease. the Stretch Tuning knob until you achieve the desired piano intonation.
