All of High Spirits Flutes are tuned at an environment that is at an average of 72 degrees Fahrenheit (22 degrees Celsius) and at a humidity condition of 35%.
The tuning is double checked with a piano played by a professional pianist.
Even though all of the High Spirits instruments are treated and sealed with a non-toxic Tung Oil, weather temperatures and humidity conditions can dramatically change the wood fiber and structure. This can have an effect on the overall tuning of the instrument.
When used in a professional setting such as recording and performances, we highly recommend that the flutes be warmed up for an entire day in an environment that is at least 70 degrees Fahrenheit (21 degrees Celsius) and preferably warmer.
P.S. - All wind instruments are affected by the amount of air pressure that is projected into them. This is true for flutes. Too much pressure and the tuning will go sharp, not enough pressure and the tuning will be flat. Experimenting with the air pressure and volume will provide more flexibility with getting the tuning to ones needs.
High Spirits Flutes
PO Box 35398, Tucson, AZ 85740 800.394.1523 fax: 520.394.2312