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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A title=johann@tollidee.com =
href="mailto:johann@tollidee.com">Jonathan
Finger</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">'Pianotech'</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, January 23, =
2003 10:43
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: close =
enough>??</DIV>
<DIV><BR></DIV>
<DIV>Hi there all,<BR><BR>If I'm moving pitch more than 8-10 cents, =
then I
will do a pitch raise,<BR>and tune uisons as I go. I do this =
with both a
strip, and a rubber<BR>mute. I tune with the pocket RCT, so typically =
I am
able to tune<BR>chromatically up from A0. Like I said, with a =
pitch
raise I pull sharp,<BR>usually a bit sharper in the treble, and less =
in the
bass. It has been<BR>my experience that the treble will drop =
more than
the standard 25%, and<BR>that the bass will drop less than this =
amount.
</DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2> <STRONG><EM> I will =
do a
seperate pass if the piano is as little as 2 cents off. My =
experience
has shown me that the bass will need a 20 percent overcorrection, and =
this
puts it right on the money almost every =
time.</EM></STRONG></FONT><BR><BR>If I
must do a pitch raise, I try to do it as quickly as =
possible,<BR>knowing that
I will be redoing a good portion of it. This usually takes<BR>a =
1/2 hour
(or so). Surprisingly, many times on the 2nd time =
through,<BR>I'm only
moving maybe 30%. This means that the second time =
through,<BR>even
though it's a "fine tuning" doesn't take all that long, and =
the<BR>entire
process is usually done within an hour and a half. </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2> <STRONG><EM> That's =
what I've
found, also. </EM></STRONG></FONT><BR><BR><BR>Somewhat off topic (or =
is it)
... I remember Virgil Smith doing a study<BR>here once where he =
showed
that tuning unisons caused the pitch level of<BR>the note to =
drop. I
believe it was something like 1-2 cents. (anyone<BR>know what =
I'm
talking about, or have I gone mad?)</DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2> <STRONG><EM>I saw =
that
demonstration too. In our class, it could be demonstrated by hearing =
the beat
rate of the third tenth octave check, but they had trouble measuring =
it with a
machine.</EM></STRONG></FONT></DIV>
<DIV><STRONG><EM><FONT face=Arial size=2> Kevin =
E.
Ramsey</FONT><BR><BR></EM></STRONG><BR>Jonathan Finger RPT.<BR>Boulder =
Chapter, PTG<BR><BR></DIV></BLOCKQUOTE></BODY></HTML>