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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=Crashvalve@aol.com
href="mailto:Crashvalve@aol.com">Crashvalve@aol.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> October 12, 2003 8:48 =
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Restoring =
Crown</DIV>
<DIV><BR></DIV><FONT face=arial,helvetica><FONT face=Geneva =
color=#000000
size=2 FAMILY="SANSSERIF">
<DIV><BR><BR></FONT><FONT face=Geneva color=#000000 size=2
FAMILY="SANSSERIF">Story & clark used to have those store =
demonstration
3-4 inch wide strips of soundboard with a tuning fork screwed to the =
middle
and a tension rack below. The fork was struck and then the rack =
engaged to
produce varying amounts of crown in this little strip of board. Of =
course the
tuning fork tone increased dramatically when crowned. Problem is, it's =
an
awfully small footage of soundboard, is this really a reliable proof =
of crown
producing amplification (or at least good transmission) ?<BR>Glenn
C.</FONT><FONT face=Geneva color=#000000 size=2 =
FAMILY="SANSSERIF"></FONT>
</DIV>
<DIV><FONT size=2></FONT> </DIV></BLOCKQUOTE>
<DIV><FONT face="Comic Sans MS" color=#000080>No, it is not. It's an =
indication
of what happens when you tune the resonant frequency of a bent piece of =
wood
held under compression to the specific frequency of a vibrating tuning =
fork
mounted to its surface. It had no bearing (if you'll pardon the =
expression) on
the performance of the soundboard and the folks at Story & Clark =
knew it.
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<DIV><FONT face="Comic Sans MS"
color=#000080>Del</FONT></FONT></DIV></BODY></HTML>