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Questions: String Tension and Pure Tone

Questions: String Tension and Pure Tone

by R.M. Mottola

Originally published in American Lutherie #98, 2009

See also,
Questions: String Tension and Purity of Tone by Alan Carruth

 

Pat Bowen from the Internet asks:

A generally accepted fact is that the higher the string tension, the more pure the tone. This causes me grief, since I have to build instruments to support the heaviest strings. Even if I don’t recommend them, someone is going to use them. But is this thing about the high tension and pure tone really true or is it just a folk tale?


The Questions Column editor
responds:

The short answer is yes, it is true, and the short explanation is inharmonicity. The higher the tension, the closer the partials are to true harmonic multiples of the fundamental frequency. On p. 115 of his book Engineering the Guitar — Theory and Practice, Richard Mark French states: “...increasing the radius [of the string] or elastic modulus [i.e., stiffness] makes the deviation from the ideal harmonic series worse, while increasing tension or length makes it better.” This is an interesting topic worthy of an article or at least a longer explanation than I’ve given here, which I hope someone will provide.

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On Becoming a Successful Luthier

On Becoming a Successful Luthier

by R.E. Bruné

Originally published in Guild of American Luthiers Newsletter Volume 2 #6, 1974



A question I am often asked by visitors to my shop and other luthiers, is, “are you making it?” as if to say “anyone who looks like he’s having such a good time doesn’t deserve to make money too.” Well, I am happy to report that yes, I’m “making” it.

To be judged a successful luthier, I think it is really necessary to examine exactly what “Success” is, especially in terms of today’s somewhat unstable economic climate. Unfortunately, for many of this country’s working people, the only tangible measure of success is the monthly bank statement. The balance of the account has become the end in itself, and the product be damned.

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Wood Salvaging Down Under

Wood Salvaging Down Under

by Des Anthony

Originally published in Guild of American Luthiers Quarterly, Volume 6 #2, 1978 and Lutherie Woods and Steel String Guitars, 1998



Woodstock. No, not that Woodstock, but a one-shop, no-houses Woodstock in North Queensland, Australia. At last the moment had arrived. It was a typical hot summer’s day and I was armed with the necessary tools. There was still that feeling of uncertainty in my mind that what I was to do was totally criminal.

Sharing the shed with the ’dozers and tractors was an old upright Victor piano. Nobody wanted it anymore so I was able to carry out my plan. At home, our towns usually have a festival each year, and in that festival procession there is always an old car whereupon, for a fee, you may smash with a sledge hammer. Well, I wasn’t in that kind of mood, but I was still going to reduce this piano to an unrecognizable mess, but, I hope with a more dignified ending.

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  This article is part of our premium web content offered to Guild members. To view this and other web articles, join the Guild of American Luthiers. Members also receive 4 annual issues of American Lutherie and get discounts on products. For details, visit the membership page. If you are already a member, login for access or contact us to setup your account.
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Review: Guitar; An American Life by Tim Brookes

Review: Guitar; An American Life by Tim Brookes

Reviewed by Ervin Somogyi

Originally published in American Lutherie #87, 2006



Guitar: An American Life
Tim Brookes
ISBN: 0-8021-1796-1
Grove Press, 352 pp., 2005

I found Tim Brookes’ Guitar: An American Life while browsing in a bookstore in Manhattan. I’d never heard of this book, but it’s one of the most enjoyable and informative reads I’ve ever had about the instrument I’ve built my professional life around. It’s written much in the spirit of Richard Halliburton’s marvelous and magical travel books that I read many years ago and that opened up my young mind’s vistas.

It was a pleasant surprise to find that this book is, on the initial level, about a guitar building collaboration between the author and Rick Davis, a fellow luthier with whom I have a friendship. A book about a guitar making project written from the client’s point of view: Wow, what a great idea!

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This article is part of our premium web content offered to Guild members. To view this and other web articles, join the Guild of American Luthiers. Members also receive 4 annual issues of American Lutherie and get discounts on products. For details, visit the membership page.

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Letter: Statistical Listening Test

Letter: Statistical Listening Test

by Kenny Hill

Originally published in American Lutherie #98, 2009



Hi Tim,

What do you do when a “scientific” study directly contradicts your own experience? Which are you more inclined to believe, a statistical body of “evidence,” or your own ears?

This is my dilemma now, having read R.M. Mottola’s paper on his statistical listening test with soundports (AL#97). This experiment seems at first glance to be thorough and well designed. In his conclusion he states that there is no perceivable difference between port open and port closed. This is followed by the comment that this may be “of practical value to those considering adding soundports.”

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This article is part of our premium web content offered to Guild members. To view this and other web articles, join the Guild of American Luthiers. Members also receive 4 annual issues of American Lutherie and get discounts on products. For details, visit the membership page.

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