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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Terry,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> That all sounds good and all but it doesn’t
hold up with what I see in the field. I completely agree that it will have a
positive effect with a string cover or blanket but I have not seen it deter
rust or oxidation with only the lid as the insulator. I’m not saying it
wouldn’t in a situation where the entire lid was in use but we all know
that the vast majority of the time the half lid is left open.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Greg Newell<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Greg's Piano Forté<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>www.gregspianoforte.com<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>216-226-3791 (office)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>216-470-8634 (mobile)<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> pianotech-bounces@ptg.org
[mailto:pianotech-bounces@ptg.org] <b>On Behalf Of </b>Farrell<br>
<b>Sent:</b> Monday, February 18, 2008 3:18 PM<br>
<b>To:</b> Pianotech List<br>
<b>Subject:</b> Re: Whole room humidity control better than Dampp Chaser. (
Right?)<o:p></o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
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<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Arial","sans-serif"'>The
heating rods on the DC system heat the air beneath the soundboard. The warm air
under the soundboard will tend to stay there if undisturbed because warm air
rises (it's less dense). That warm air will in turn warm the soundboard. The
soundboard will warm the air above it (like where the strings are). If there is
some type of air movement restriction in close proximity to and above the
strings (like a lid), or some type of insulation (like a string cover or a
blanket over the entire piano), then some of that heated air will remain in the
string environment. The warmed air will have a lower relative humidity level
than the rest of the room, thus helping to reduce string corrosion.</span><o:p></o:p></p>
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<p class=MsoNormal style='margin-left:.5in'> <o:p></o:p></p>
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<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Arial","sans-serif"'>Terry
Farrell</span><o:p></o:p></p>
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margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
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<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>----- Original Message ----- <o:p></o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in;background:#E4E4E4'><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.5in;background:#E4E4E4'><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>
I also agree with you! This does, however, morph from the original point of
what the DC unit does or does not do. I agree that a string cover will help
with the rusty strings issue. I don’t believe that the DC unit will help
with same.<o:p></o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in'><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in'><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'>Greg Newell</span><o:p></o:p></p>
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