On Thu, Sep 17, 2009 at 11:51 AM, Mark Dierauf <pianotech at nhpianos.com> wrote: > I've seen the low tenor move measurably within 1 minute of the DC being > plugged or unplugged, and I would never recommend unplugging the unit during > a concert. > I agree. However, just to clarify ... that change is not happening from moisture content changes. It's happening from temperature change, or some other reason (like stage lights, air movement, etc.) -- JF
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