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<font size=3>At 08:59 PM 05/03/2001 -0700, you wrote:<br>
<blockquote type=cite cite>Okay, I don't argue that cracks affect
the tone.<br>
<br>
If you want to use the speaker analogy. The reason a speaker with
slits<br>
will reduce the loudness is because of the air pressure bleed
around to the<br>
back from the front. That's why speakers are put in a box to
increase the<br>
distance the sound must travel from the front of the cone to the
rear. This<br>
becomes increasingly important at the lower frequencies.<br>
So, when the soundboard rises pushing air up, the air is attracted to
the<br>
bottom of the board which is now creating a vacuum. If there is a
crack<br>
allowing the air to reach the bottom of the board the sound is
canceled. It<br>
now has a direct path rather than over the rim, down the side and
under the<br>
piano.<snip>Carl Meyer</font></blockquote><br>
<br>
Wasn't it Steinway that conducted an experiment by removing about
2"<br>
of board from behind the bridge without any appreciable difference?<br>
<br>
One of the best sounding pianos I've heard had a multitude of
cracks<br>
in the board, it looked like a venetian blind.<br>
<br>
Regards,<br>
<br>
Jon Page, piano technician<br>
Harwich Port, Cape Cod, Mass.<br>
<a href="mailto:jonpage@mediaone.net" eudora="autourl">mailto:jonpage@mediaone.net</a><br>
<font size=3><a href="http://www.stanwoodpiano.com/" eudora="autourl">http://www.stanwoodpiano.com<br>
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