Sound post

<h2 id="sound-post-adjustment">Sound post adjustment</h2>

<p>The position of the sound post inside a violin is critical, and moving it by very small amounts (as little as 0.5mm or 0.25mm, or less) can make a big difference in the sound quality and loudness of an instrument. Specialized tools for standing up or moving a sound post are commercially available. Often the pointed end of an S-shaped setter is sharpened with a file and left rough, to grip the post a bit better.
</p><p>Soundpost adjustment is as much art as science, depending on the ears, experience, structural sense, and sensitive touch of the luthier. The rough guidelines in the following section outline the effects of various moves, but the interaction of all the factors involved keeps it from being a simple process. Moving the sound post has very complex consequences on the sound. In the end, it is the ear of the person doing the adjusting that determines the desired location of the post.
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<h2 id="effect-of-position-on-the-instrument">Effect of position on the instrument</h2>
<p>Moving the sound post towards the fingerboard tends to increase brilliance and loudness. Moving the sound post towards the tail piece decreases the loudness and adds a richness or hollowness to the tonal quality of the instrument. Moving it towards the outside of the instrument increases brightness and moving in towards the middle of the instrument increases the lower frequencies. There is very little room to move the post from side to side without fitting a new post (or shortening the existing one) since tension (how firmly the post is wedged between top and back) plays an important role in tone adjustment. Perfect wood-to-wood fit at both ends of the post is critical to getting the desired sound.
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<h2 id="see-also">See also</h2>
<ul><li><a href="/facts/Bass_bar/ALoFECe4">Bass bar</a></li></ul>

<h2 id="external-links">External links</h2>
<ul><li><a href="http://www.mimf.com">Musical Instrument Makers Forum</a></li>
<li><a href="http://www.fiddleforum.com/fiddleforum/index.php?board=31.0/">Violin Discussion Forum</a> Section on building and maintaining violins</li></ul>

<h2 id="references">References</h2>

<ol>
<li id="fn:1"><p>David D. Boyden. "Ame", Grove Music Online, ed. L. Macy (accessed May 20, 2006), grovemusic.com (subscription access). <a href="/wiki/Grove_Dictionary_of_Music_and_Musicians" target="_blank">/wiki/Grove_Dictionary_of_Music_and_Musicians</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li>
</ol>

Sound post open-in-new

Sound post