Category Archives: guitar

Changing Guitar-Body Resonant Frequencies

2024
AL#152 p.52               
Devon Pessler   Alyssa Fernandez   Mark French                                                                                   

▪ A lot of people have a rough idea of how it would affect the sound of a flattop guitar to make the sides deeper, or to make the soundhole smaller. But now a college professor and two students have built the test apparatus and quantified the question. Read this article and see if you guessed right.

Guitarreria Ottenschlag

2024
AL#151 p.34               
Joshua-Alexander French                                                                                           

▪ Imagine the fun of attending an intensive seminar where nine builders build fine classical guitars from scratch with an instructor whose strong background qualifies him to carry on the teaching work of Jose Romanillos. Now make the setting an authentic castle in Austria. With a gourmet restaurant. What a wonderful world. Mentions Tobias Braun, Jose Romanillos, Marian Harris Winspear, Santos Hernández, Alberto Martínez, Luise Walker, Miguel Llobet, Jeffrey Elliott.

Measuring the Breaking Strength of Steel Guitar Strings

2024
AL#151 p.58               
Mark French                                                                                           

▪ It’s amazing what you can do with a smart phone these days. Think you would need an anvil, a block-and-tackle, and a bathrom scale to measure the breaking strength of a guitar string? Nope. There’s an app for that. Mentions Fine Chromatic Tuner.

The Gibson L1: a Modern Recreation

2023
AL#150 p.6               
Sjaak Elmendorp                                                                                           

▪ The technology and fashion of wooden instruments move forward inexorably, although whether that “forward” motion is the same as improvement can be a matter of debate for decades or centuries. Elmendorp made what he calls a “faithful impression rather than accurate reproduction” of a 1907-style Gibson L1: small body, carved top, floating bridge, round hole.

Effect of String Tension on Archtop Guitar Action Height

2023
AL#150 p.14               
Sjaak Elmendorp                                                                                           

▪ When you tighten the strings on an archtop guitar, the neck lifts forward and the action height increases. At the same time, the bridge pushes the top down and the action height decreases. It’s a win-win! So you can just feel lucky about it and proceed naively along your life path, or you can do what Elmendorp did: get a bucket of water, a piece of wire, and a dial indicator; collect some data; then crunch the numbers.

Reducing Frequency Error in Electric Guitars

2023
AL#150 p.38               
Mark French   Devon Pessler   Alyssa Fernandez                                                                                   

▪ Ya talk about rabbit holes. Research into guitar intonation just gets deeper and deeper. This article homes in on individual string compensation at the nut, plus small adjustments to the position of the 1st and 2nd frets. Industrial strength data collection. Heed the eggheads.

Effects of Saddle Materials on Guitar Tone

2023
AL#149 p.46               
Robin Connaughton                                                                                           

▪ Lots of materials can work for a flattop guitar bridge saddle. Will they sound different? Connaughton tries several, and collects data with an ingenuously simple plucking technique.

Using Soundhole Inserts to Vary the Lower Resonant Frequencies of an Acoustic Guitar

2023
AL#149 p.50               
Mark French   Eddy Efendy                                                                                       

▪ Putting a tube in the port of a loudspeaker box changes the lower resonances. Makers of classical guitars have known about that for a century and a half. They call that tube a tornavoz. French and Efendy give us the math on how it works.

Helmholtz Resonance in Acoustic Guitars

2023
AL#148 p.28               
Mark French                                                                                           

▪ If you are like me, you probably think you know what the Helmholtz resonance of a flattop guitar is. And like me, you may be exactly wrong. Turns out it is the note that you don’t hear. Mentions Fender Acoustasonic Stratocaster, tornavoz.

Review: The Caldersmith Papers

2023
AL#148 p.63               
R.M. Mottola                                                                                           

▪ Legit scientist Graham Caldersmith was an early GAL member and a prolific author for us and other journals. Those articles have now been gathered and published in a book. Our reviewer talks about the book, and about Caldersmith’s position in the lutherie literature.

Guitar Evolution’s Missing Link: The Early 5-String

2022
AL#147 p.28               
James Buckland                                                                                           

▪ Baroque guitars were 5-course instruments. That is, they had ten strings in five pairs. Then suddenly here comes the 19th century and guitars had six single strings. Yadda yadda, now it’s today and everything is normal. The real story is a lot more interesting than that and it actually involves a “missing link;” the 5-string guitar. Luthier, guitarist, and scholar Buckland lays it all out for us.

“Restomodding” Wall-Hanger Guitars

2021
AL#144 p.6               
Roger Haggstrom                                                                                           

▪ A hundred and some years ago, Swedish folks sat around the house all of a dark winter and sang hymns together, accompanied by the strummings of cheap mass-produced guitars. Those days are gone, but a lot of the guitars are still hanging on the walls of old houses. Roger Häggström has made a business of restoring them to useful condition and modifying them to sound and play better than they ever could have. He restores and modifies. Restomods. Mentions the Levin guitar company.

Guitar Making as a Teaching Tool

2021
AL#144 p.56               
Debbie French   Mark French                                                                                       

▪ There is a national movement to teach teachers how to teach STEM subjects (science, technology, engineering, and math) to high-school students; you have them make guitars. Turns out people think it’s fun to make guitars. Who knew?

Norwegian Spruce

2021
AL#143 p.40               
Leonardo Michelin-Salomon                                                                                           

▪ In AL#141 Leonardo showed us how he was building Romantic-era guitars at the craft school in Norway. This time he is taking a deep dive into building with local spruce. Although the trees are not big, the wood is very good. Mentions Gennaro Fabricatore, Johann Anton Stauffer, Josef Pagés, Coffee-Goguette.

Measuring Resonant Frequencies of an Acoustic Guitar

2021
AL#143 p.48               
Mark French                                                                                           

▪ Here’s how to quickly make a frequency-response curve of a guitar on your bench, using a handheld digital recorder and free software. Not cheap and easy enough for you? The author goes on to tell you how to do the whole thing on a smart phone. Mentions Spectroid, MATLAB, and Audacity.

Recent Research: Short Summaries of Recent Scientific Research Articles from Savart Journal

2021
AL#143 p.60               
R.M. Mottola                                                                                           

▪ Mottola gives short, not-too-technical summaries of two articles recently published online by Savart Journal. In the first, Mark French et al. take on the fraught task of “Comparing Subjective and Objective Data from a Pool of Classical Guitars.” In the second, Gabriele Caselli et al. present an “Analysis of Violin Combination Tones and their Contribution to Tartini’s Third Tone.”

Remembering Julian Bream

2021
AL#142 p.6               
Cyndy Burton   Jose Romanillos   R.E. Brune   Jeffrey R. Elliott   Kevin Aram   Gary Southwell   Simon Ambridge                                                                   

▪ The great classical guitarist Julian Bream was well known for supporting and encouraging contemporary composers and promising young players. Less noticed by the public, but of special importance to luthiers, was Bream’s work with a handful of classical guitar makers from whom he commissioned the fine instruments that he played. In this article, those luthiers offer memories of their interactions with Julian Bream. Mentions Hermann Hauser Sr.

Questions: Floating Fretboard Extension

2020
AL#139 p.69               
Mike Doolin                                                                                           

▪ When you use a bolt-on neck for a flattop guitar, can you just not glue down the part of the fretboard that lies on the soundboard?

The Charles Fox Guitar-Building Method, Part Two

2020
AL#140 p.20               
Mark French   Charles Fox                                                                                       

▪ Building a Charles Fox guitar reveals the beautifully developed interdependence between the design and the process. In this episode we rough out the neck, work with the unusual neck block and the distinctive two-part lining, and then brace the top and back plates.

In Memoriam: Graham Caldersmith

2020
AL#140 p.60               read this article
Juan-Oscar Azaret                                                                                           

▪ Pioneering guitar maker, guitar designer, acoustics researcher, and author Graham Caldersmith has passed away. If you knew him, perhaps from his attendance at GAL Conventions, read this affectionate remembrance. If you didn’t, read it to find out what we’ve lost. Mentions Carleen Hutchins, Jim Williams, Greg Smallman.

Recent Research: Short Summaries of Recent Scientific Research Articles from Savart Journal

2019
AL#137 p.58               
R.M. Mottola                                                                                           

▪ Mottola gives short, not-too-technical summaries of two articles recently published on-line by Savart Journal. The first is an update of frequent author Mark French’s efforts to define stringed instrument body outlines by use of math equations. The second looks at what can be learned about lutherie wood by reading ancient Chinese texts.

Mechanical Impedance

2019
AL#136 p.20               
Mark French                                                                                           

▪ We all know what “impedance” is, right? It’s that stuff… the force that… well, what is it really? Turns out it’s something like pushing a kid on a swing at the wrong time. And it has a lot to do with the resonances of acoustic instruments, which has a lot to do with how they sound. Anyway, in this largely math-free presentation, Professor Mark gives us the scoop.

The Convolution of a Guitar Note

2018
AL#135 p.45               
Juan-Oscar Azaret                                                                                           

▪ Tap on a guitar. Or listen to just the first fraction of a second as you pluck a note. Those tiny samples contain a wealth of information. Our brains already form an impression of the guitar’s sound, long before the first second has elapsed. Computers can reveal the math behind the music and help us understand and visualize what is happening. Good basic info about the FFT, that is, the Fast Fourier Transform, and how the information in a guitar tap can be viewed in the time domain or the frequency domain.

Meet the Maker: Rafael Mardones Sr. and Jr.

2018
AL#135 p.38               
Federico Sheppard                                                                                           

▪ In his youth, before Federico Sheppard found his calling as a luthier, he was a mere physician working for the Olympic Games. One day he heard a classical guitar being played on the radio of his car. It shook him to “his inner core being” as Lord Buckley would say, and changed the course of his life. And now he has finally made the pilrimage to Chile to visit the shop of the man who made that guitar, Rafael Mardones, and his son, Rafa Jr.

Seeking Quality and Consistency in Classical Guitar Sound

2018
AL#134 p.34               
Greg Byers                                                                                           

▪ So you made a classical guitar, and it sounds good. You want your next one to sound good, too. You want your output to be consistently good. How do you do that? After decades of lutherie experience, Byers has developed a method of recording the frequency responses of the soundboard at each major stage of construction. Does the tap-tone of the raw top set tell the whole story? No, but it can help you steer the project to a successful conclusion.

Making Long-Radius Curve Templates

2018
AL#134 p.60               
Mark French   David Zachman                                                                                       

▪ There are times when a luthier may want to draw a good long-radius arch. If jury-rigging a 25-foot compass seems like a hassle, you may have been tempted to just bend a straight stick a little and call it good. Turns out that’s a better solution than you may have thought. This article evaluates several techniques and gives the math that undergirds them.

Letter to the Editor: Brace Sanding Using Higher Grit Sandpaper

2018
AL#133 p.3               
Brent Benfield                                                                                           

▪ Do finely-sanded guitar tops actually sound different from the usual ones? An experienced luthier writes in to aver that they do.

Meet the Maker: Mark French

2018
AL#133 p.22               
R.M. Mottola   Mark French                                                                                       

▪ Mark French was a kid who took guitar lessons and paid the guy at the music store to change his strings. He went on to be an aerospace engineer, but with all that book learning he still did not know how guitars worked. Now he teaches college courses on guitar making and hangs out with captains of industry at Fender and Taylor.

Letter to the Editor: Guitar Compensation Experiment at 2017 Convention

2017
AL#132 p.3               
R.M. Mottola                                                                                           

▪ Mottola collected some data about string length compensation at the 2017 GAL Convention. He promises to publish soon.

Let’s Catch Up With Graham Caldersmith

2017
AL#132 p.44               
Juan-Oscar Azaret   Graham Caldersmith                                                                                       

▪ Graham Caldersmith’s articles in GAL publications go back a full thirty-five years, earlier than American Lutherie magazine itself. He’s located in a tiny town in the hinterlands of New South Wales, Australia. He uses his scientific training to develop innovative classical guitars, and has long been a leader in the effort to develop a family of guitars of different sizes and musical ranges. Our globetrotting reporter asks about his latest thoughts and methods, which include carbon-reinforced lattice bracing.

Drawing Acoustic Guitar Body Outlines Using Traditional Techniques

2017
AL#129 p.52               
R.M. Mottola                                                                                           

▪ Grab a piece of paper and a pencil. See if you can find that old plastic triangle. Mottola steps you through the process of actually drawing the outline of an Orchestra Model guitar. Keep a candle handy. If the power goes out you can keep working.

Reviews: Contemporary Acoustic Guitar Design and Build: by Trevor Gore with Gerard Gilet

2012
AL#109 p.58               
R.M. Mottola                                                                                           

▪ A milestone in ‘how to’ lutherie publications on the construction of flattop guitars, packaged in two large volumes: one on design and one on construction.

Dana Hears Voices: Optimizing Steel String Soundboard Response

2009
AL#99 p.22      ALA1 p.36         
Dana Bourgeois                                                                                           

▪ Taken from his 2008 GAL convention lecture, the author explains the basic functioning of a guitar top and how he manipulates the plates and braces to achieve the sound he’s after. Mostly, he says, he’s after the most different tap tones that the top and back can produce, but there are many other details given along the way. Bourgeois is often regarded as one of the champions of tap tuning. With 9 photos, 6 charts, and a bunch of diagrams.

The “Corker” Guitar: A Sideport Experiment

2008
AL#94 p.56               
Alan Carruth                                                                                           

▪ Carruth built a classical guitar with many ports cut in the side. By closing the ports with corks in various combinations he tested the usefulness of sideports and tried to establish the physics behind their use. Though this guitar did not make a believer out of him, he admits that his results are somewhat inconclusive. With one photo and a slew of charts and figures concerning the air modes of his guitar with various sideports open.

This article has been nominated as one of the Guild’s best articles published before 2010.

Herr Helmholtz’ Tube

2007
AL#91 p.11               read this article
Mike Doolin                                                                                           

▪ The author found that a sideport (hole in the side, in addition to the front soundhole) in his guitar changed its voice in an undesirable way. Adding a bass reflex tube to the hole returned the guitar to a tonal range he liked. He remains luke warm to the benefits of side ports. With 5 photos.

This article has been nominated as one of the Guild’s best articles published before 2010.

Rib Depth of Guitars with Spherically Domed Plates

2005
AL#84 p.22   BRB7 p.386            
R.M. Mottola                                                                                           

▪ Instruments with domed plates must have the rib assembly altered to accept the topography of the plates. This can be done after assembly or before bending. The author offers an overview of how either can be accomplished.

The Helmholtz Resonance

2005
AL#82 p.38   BRB7 p.344            
R.M. Mottola                                                                                           

▪ It’s not necessary to understand the physics of sound to be a great instrument maker, but it can’t hurt. Many of us would like to believe that we succeed using experience and strong intuition and don’t need science. Maybe an analytical mind just gets in the way, no? Or maybe the science guys are just smarter than the rest of us and we need an excuse not to stand in the same light that they do. Who knows? Anyhow, the Helmholtz resonance is the lowest vibratory mode of an instrument, though not necessarily the lowest note that instrument is capable of. All the rest of sound physics is built on top of the Helmholtz resonance, and Mottola devolves the science enough for the rest of us to understand. It’s fun but in the end it’s not clear that it really matters. For the few among us with operational math brains all the formulas are presented in a sidebar.

This article has been nominated as one of the Guild’s best articles published before 2010.

Review: Left-Brain Lutherie by David C. Hurd, PhD

2005
AL#81 p.59   BRB7 p.528            read this article
R.M. Mottola                                                                                           

▪ The right side of the brain is creative and the left side is analytical. It’s nice when they can work together, but for most of us one side or the other is dominant. The reviewer (who is admittedly left-brained) would like even right-brained luthiers to read this book, though he admits that they may struggle. Intelligent people shouldn’t ignore any source of information that may improve their work. Those who become luthiers to escape from real work may not grasp this concept.

Calculating Guitar Side Height

2003
AL#75 p.39   BRB7 p.96            
Mike Doolin                                                                                           

▪ Doolin enlists the aid of Jon Sevy to work out the math used in determining the side height of an instrument with a spherically-domed back. Knowing the side height will allow you to profile the sides to fit the guitar design before they are bent. With a photograph and three drawings.

Questions: Measuring Guitar Efficiency

2003
AL#73 p.66   BRB7 p.22            
Alan Carruth                                                                                           

▪ A method of measuring an acoustic guitar’s efficiency that can be performed by the average luthier without the resources of a fully equipped lab.

Forces on Archtop Guitars

2003
AL#74 p.30   BRB7 p.56            
Franz Elferink                                                                                           

▪ A variety of forces begun by simple string tension not only make our instruments function but may eventually tear them apart. With a little math we can determine what those forces are and sort of decide if our archtops are beefy enough to withstand them. With 3 drawings.

What Happens If I Make It Bigger?

2003
AL#73 p.36   BRB7 p.14            
Jon Sevy                                                                                           

▪ This piece is aptly subtitled “Rules of thumb for approximating changes in the size of braces, tops, and strings,” which sums it up nicely. Our teachers promised us that math wouldn’t be irrelevant in our futures, and here their words come back to bite us. Sevy obviously believed them, and here presents some “easy” formulas for calculating the results of changes in size we might make in our instruments.

Audio Spectroscopy

2002
AL#70 p.44   BRB6 p.365            
R.M. Mottola                                                                                           

▪ With digital recording and spectrographic analysis software a computer can print out a diagram of an instrument’s tone spectrum, reducing the complicated issue of tone comparison to easy-to-read graphs. The scientifically inclined luthier may find that this helps him build better instruments, while others may decide that it’s another case of too much information. If you’ve found that intuition has carried you as far as it can you might check out the usefulness of “tone pictures”. With 5 bass guitar spectrographs.

Estimating an Initial Soundboard Thickness

1999
AL#57 p.32   BRB5 p.310            
David Hurd                                                                                           

▪ Uke maker Hurd was once a research scientist, and intuitive instrument construction is not his bag. Using his formula luthiers can compare known wood species with unknowns and learn what to expect of the new ones. He also offers some top dimensions for instruments of the ukulele family. With 5 charts and much math.

Review: Acoustics of Wood by Voichita Buchur

1999
AL#57 p.62   BRB5 p.479            read this article
Nicholas-Von Robison                                                                                           

▪ The reviewer finds that this technical tome about how wood vibrates may have a lot of value to any luthier who wants to work out the math, but that its high price will make it unavailable to most.

Questions: Playability Variables

1998
AL#56 p.64   BRB5 p.309            
Jeffrey-R. Elliott                                                                                           

▪ The variables that influence the ‘feel’ or playability of instruments with the same scale length, string gauge, and setup.

Letter to the Editor: Wood Resonation

1997
AL#52 p.3               
Joe-D. Franklin                                                                                           

▪ Many builders maintain that a guitar top that varies in thickness offers better tone than a uniform top.Franklin offers technical reasons for why it is so.

Scale Length and Tone

1997
AL#51 p.6   BRB5 p.86            
Ralph Novak                                                                                           

▪ Scale length is seldom used as a design criterion to achieve a given tone, but Novak shows that a given set of strings behaves differently according to the scale length it is stretched over. There are reasons to change other than player comfort. Impress your friends with your knowledge of the evil clang tone. With 6 graphs and 2 photos.

This article has been nominated as one of the Guild’s best articles published before 2010.

The Guitar Neck: Its Design and Physics

1996
AL#48 p.22   BRB4 p.394            
Ervin Somogyi                                                                                           

▪ This 1995 convention lecture covers the physical nature of the neck. Not how to do the work, but how to make a neck for maximum playability and instrument performance. Both steel string and classical guitars are discussed. With 1 photo and a slough of diagrams.

This article has been nominated as one of the Guild’s best articles published before 2010.

Amplifying Acoustic Instruments

1996
AL#47 p.50   BRB4 p.358            
Harry Fleishman                                                                                           

▪ Fleishman has worked with all the commercial piezo pickups and has made a bunch of his own. Shop-brewed pickups can be cheap, useful, and instructive, but finding the best use for any piezo can be complicated. Adding microphones or magnetic pickups to the mix can be more confusing than helpful. Fleishman takes a look at all the angles. From his 1995 convention lecture.

This article has been nominated as one of the Guild’s best articles published before 2010.

Classic Guitar Intonation

1996
AL#47 p.34   BRB4 p.368            
Greg Byers                                                                                           

▪ Finding perfect intonation through deep math and jiggling the string length at both ends. For some luthiers the quest for perfection knows no bounds. The rest of us are just jealous.

This article has been nominated as one of the Guild’s best articles published before 2010.

Paradoxes in Guitar Acoustics

1996
AL#45 p.22   BRB4 p.285            
Alan Carruth                                                                                           

▪ How is it that some makers build consistently superior guitars even though, scientifically speaking, they have no direct control over the thing that makes them superior (high frequency response)? Carruth is a long-time researcher and acoustician. This 1995 lecture transcription is about the design compromises that luthiers face while pursuing the ultimate guitar. With 6 drawings and 2 photos.

Review: The Physics of Musical Instruments by Neville H. Fletcher and Tom Rossing

1995
AL#42 p.57   BRB4 p.466            
Don Bradley                                                                                           

▪ The reviewer finds that the authors have made an invaluable reference for studying the vibration of all types of musical instruments.

HD-28 Soundboard Replacement

1995
AL#42 p.40   BRB4 p.192            
Alan Carruth                                                                                           

▪ Carruth ran mode and frequency tests on the old top and the replacement top.The goal was to reproduce the quality of the old airlines-damaged top.

The Guitar Family, Continued

1995
AL#41 p.10   BRB4 p.126            
Graham Caldersmith                                                                                           

▪ Caldersmith is working to expand the voice range of guitar ensembles, both classical and steel string. With 4 photos and frequency response graphs. The first installment of Caldersmith’s work with a classical guitar family came way back in AL#18.

This article has been nominated as one of the Guild’s best articles published before 2010.

Heed Herr Helmholtz (or How I Built My First Guitar Twice)

1994
AL#38 p.44   BRB4 p.48            
Mike Doolin                                                                                           

▪ Anyone willing to dismantle their first guitar deserves a lot of credit, especially if it came out cosmetically pristine the first time. Doolin replaced the top of his first guitar to bring the bass response up to spec. With 9 photos and a lot to think about.

Principles of Guitar Dynamics and Design

1993
AL#36 p.16   BRB3 p.396            
Ervin Somogyi                                                                                           

▪ Somogyi delves into many of the technical considerations of guitar design and construction. With a large number of drawings.

In Search of the Perfect Cone

1992
AL#30 p.44   BRB3 p.204            read this article
Tim Earls                                                                                           

▪ Multiple radius fingerboards revisited. Also called conical fretboards. Earls strives to put the design process into the hands of Joe Guitar maker using “barnyard” geometry. Seems to work. The article also contains a description of the Warmoth multiradius fretboard, which has become sort of the industry leader.

Free Plate Tuning, Part Three: Guitars

1992
AL#30 p.16   BRB3 p.136            read this article
Alan Carruth                                                                                           

▪ Accessibility and usefulness are the keys to this segment of Carruth’s study. He addresses the archtop, flattop, and classical guitars, and even builds a flattop out of oak to compare its tuning modes to conventional tonewoods. With many mode diagrams and plate graduation charts. Too many scientific studies leave the luthier asking, “So what do you want me to do?” Carruth offers some real-world suggestions. Parts One and Two were in AL#28 and AL#29.

This article has been nominated as one of the Guild’s fifty best articles published before 2010.

Free Plate Tuning, Part Two: Violins

1992
AL#29 p.42   BRB3 p.136            read this article
Alan Carruth                                                                                           

▪ Carruth tries to keep it light as he describes the glitter dances that should improve your violins, and even sheds light on cello plate tuning. If you feel threatened by the dryness of science just relax and give it a try. Carruth is on your side. Really. With a whole bunch of drawings. Part One was in AL#28. Part Three follows in AL#30. The entire series appears in BRB3.

This article has been nominated as one of the Guild’s best articles published before 2010.

Free Plate Tuning, Part One: Theory

1991
AL#28 p.18   BRB3 p.136            read this article
Alan Carruth                                                                                           

▪ Most acoustic scientists are not prepared to reduce their work to a plane-by-the-numbers chart of an instrument top.Neither is Carruth. It remains to be seen what improvements free plate tuning will offer to the average guitar, but there is every chance that luthiers who ignore the work as an inartistic invasion of their craft and art will be left in the dust. Carruth invites you to get on board right now. Parts Two and Three are in AL#29 and AL#30. The entire series apperas together in BRB3.

This article has been nominated as one of the Guild’s fifty best articles published before 2010.

Finite Element Simulation of Guitar Top Vibration

1989
AL#18 p.38               read this article
Phil Banks                                                                                           

▪ Banks, like many before him, attempts to display on paper the movements of an excited guitar top.He is uncertain of his results, but his illustrations are certainly foxier than a normal graph or oscilloscope printout.

Sound Radiation from Guitars

1988
AL#16 p.40   BRB2 p.144            
Tom Rossing                                                                                           

▪ Charts, graphs, drawings, and formulae bulk up this in-depth scientific examination of how a guitar makes noise.

This article has been nominated as one of the Guild’s best articles published before 2010.

Fret Crown Radius: A Cause of Pitch Error?

1988
AL#15 p.60   BRB2 p.106            
Steve Newberry                                                                                           

▪ Newberry proves mathematically that large frets do not cause an instrument to play out of tune (though they might easily help a guitarist to play out of tune. There’s a large theoretical difference).

Harmonic Analysis of String Excitation Methods

1988
AL#13 p.40   BRB2 p.20            
J. Jovicic   O. Jovicic                                                                                       

▪ This is a scientific analysis of how variations in picking a note change the response of the classical guitar. Translated from the French.

Archtop Guitars: Is Bigger Better?

1988
AL#14 p.18   BRB2 p.58            
Steve Grimes                                                                                           

▪ A noted maker of archtop guitars offers a detailed description of the method he uses to adjust the tone of his instruments during the carving process. He finds he is willing to sacrifice a little volume in order to attain a precise tonal character.

The Effect of Bracing on Guitar Resonance Part 2

1987
AL#12 p.14   BRB1 p.402            
J. Jovicic   O. Jovicic                                                                                       

▪ This article is more technical talk translated from the original French publication in Acustica. With 51 reproductions of laser interferograms. Part 1 was in American Lutherie #10.

The Effect of Bracing on Guitar Resonance Part 1

1987
AL#10 p.48   BRB1 p.402            
J. Jovicic   O. Jovicic                                                                                       

▪ Serious research using a classical guitar with four different brace patterns. The experiment started with a simplified fan brace pattern, and fan braces were added for subsequent evaluation. Translated from the French. Part Two is in AL#12.

Developing a New Design

1987
AL#11 p.8   BRB1 p.416            
Steve Klein                                                                                           

▪ Klein’s lecture outlines his aesthetic concerns about the contemporary steel string guitar, and many of the details of his ever-evolving, iconoclastic instruments. With several nice drawings and 2 photos. Mentions Richard Schneider and Michael Kasha.

This article has been nominated as one of the Guild’s best articles published before 2010.

Kasha Soundboard without Waist Bar

1986
AL#8 p.8   BRB1 p.266            
Gila Eban                                                                                           

▪ Eban charts the design evolution of the Kasha system of classical guitars as applied to her own instruments. With many drawings, glitter tests, and a discussion of different materials.

Meet Gregg Smallman

1986
AL#8 p.30               
Graham Caldersmith   Jim Williams                                                                                       

▪ This interview covers the evolution of Smallman’s guitars as he worked his way toward the lattice bracing system for which he has become famous. Classical guitar lore from the outback of Australia.

Relation of Science to Aesthetics in Lutherie

1986
AL#8 p.36   BRB1 p.290            
Michael Kasha                                                                                           

▪ Kasha firmly maintains that science has much to offer instrument design, but also claims that the best tone may be simply what the public is used to, and that this interesting variable can be tracked but not predicted. He believes that tone perception is as important as tone production.

This article has been nominated as one of the Guild’s best articles published before 2010.

Bars and Struts

1986
AL#8 p.38   BRB1 p.292   ALA5 p.7         
Jose Ramirez-III                                                                                           

▪ Ramirez expounds upon his experiments with classical guitar top thickness and bracing patterns and size to achieve the best tone and stability.

Review: Physics And Music by Neville H. Fletcher

1986
AL#7 p.61   BRB1 p.498            read this article
Tom Rossing                                                                                           

▪ The reviewer is enthusiastic about this booklet for the nonscientist, finding it useful and accurate.

Comments on the Kasha Question

1985
AL#4 p.42               
Gila Eban                                                                                           

▪ Eban takes on Paul Wyzskowski as she champions the design innovations of Michael Kasha. She has incorporated many of Kasha’s changes into her own classical guitars. Her rebuttal mentions Richard Schneider, Jamey Hampton, and Graham Caldersmith.

Practical Guitar Maker’s Bibliography

1985
AL#3 p.19               
Paul Wyszkowski                                                                                           

▪ Sixty books and articles dealing with guitar acoustics are rated for legitimacy, clarity, and usefulness.

Review: The Science of Sound by Tom Rossing

1985
AL#3 p.48   BRB1 p.491            read this article
Paul Wyszkowski                                                                                           

▪ The reviewer finds the book to be a complete text on the basics of acoustics that is relatively free of math and technical jargon.

Review: Lutes, Viols and Temperaments by Mark Lindley

1985
AL#2 p.52   BRB1 p.488            read this article
Edward Kottick                                                                                           

▪ The reviewer calls the book a brilliant overview and analysis of all that can be said about the complex issue of temperament on string instruments between 1520 and 1740.

Radiation from Lower Guitar Modes

1985
AL#2 p.20   BRB1 p.68            
Graham Caldersmith                                                                                           

▪ Caldersmith discusses the efficiency and pattern of sound radiation in the classic guitar produced by the four lower resonance modes, which he calls monopole, cross dipole, long dipole, and tripole. Mentions Tom Rossing, Gila Eban, Paul Wyzskowski, Fred Dickens, Michael Kasha, Richard Schneider, and Greg Smallman.

String Tension and Gauges

1985
AL#2 p.42   BRB1 p.78            
Graham McDonald                                                                                           

▪ McDonald gives formulae and graphs to determine appropriate steel string gauges for nonstandard scale lengths.

This article has been nominated as one of the Guild’s best articles published before 2010.

Letter to the Editor: Critique of Article in Vol. 12 #4

1985
AL#1 p.5               
Paul Wyszkowski                                                                                           

▪ Wyszkowski defends assertions he made in a previous article (Vol. 12, #4, GAL Quarterly) concerning sound radiation of the (1,0) mode in the classic guitar. His assertion is based on the work of William Strong and Graham Caldersmith. Criticism was made by Gila Eban.

Basics of Air Resonance

1985
AL#1 p.16   BRB1 p.8            read this article
W.D. Allen                                                                                           

▪ Allen attempts to introduce the nonphysicist to useful concepts of resonance including standing waves, captured air mass, and soundhole size. Illustrated with the author’s own sometimes-whimsical drawings, the article aims at preparing luthiers to understand heavier fare on the physics of musical instruments.

This article has been nominated as one of the Guild’s best articles published before 2010.

Lutherie: Art or Science?

1985
AL#1 p.38               read this article
R.E. Brune                                                                                           

▪ Brune criticizes the theoretical design work of Dr. Michael Kasha, concluding that it is in fact less scientific than the empirical work of luthiers untrained in physics.

This article has been nominated as one of the Guild’s best articles published before 2010.

Testing Tonewood Samples

1984
DS#271   BRB2 p.400            
Graham Caldersmith                                                                                           

▪ The “Young’s Modulus” of any piece of wood can be calculated, giving a result measurable in frequency. Comparing the Young’s Modulus of a wood species with unknown qualities with a chart of other species of known characteristics can tell you what to expect before any instrument work is commenced. Here’s how to calculate the Young’s Modulus of any piece of wood you have on hand. With 1 drawing and a sample wood chart.

This article has been nominated as one of the Guild’s best articles published before 2010.

An Interview with H.E. Huttig

1983
GALQ Vol.11#1 p.12   BRB2 p.109            
David Fisher   H.E. Huttig                                                                                       

▪ H.E. Huttig, wood merchant, writer, world traveler, experimenter, practical musicologist, lover of life, guitar maker.

GAL Instrument Plan #5: Kasha Guitar Soundboard

1983
DS#243   BRB1 p.214            
Gila Eban                                                                                           

▪ Eban offers an eloquent argument for trying the Kasha system in your own shop, as well as many details of her own guitars. A page-sized blueprint is included. She maintains that there is a philosophy and an aesthetic behind the Kasha design that is self-revealing and pleasing to work with, and that the design will always be under-realized until a larger number of builders have come to understand and absorb it.

This article has been nominated as one of the Guild’s best articles published before 2010.

Dissolving the Mysteries

1982
GALQ Vol.10#4 p.8   BRB1p.346            read this article
Graham Caldersmith                                                                                           

▪ Caldersmith loves the scientific aspects of instrument design, and offers this primer to help explain what’s going on in an excited classical or steel string guitar without going off the scientific deep end. The most interesting part is that in his update (17 years later) he has reversed is position on how to use this information. Information doesn’t change as much as how we use it, and we can’t use it if we don’t understand it. That, in a nutshell, is the acoustician’s tenant.

Soundboard Bracing Considerations

1981
DS#171   BRB2 p.201            
Paul Wyszkowski                                                                                           

▪ The author uses a light approach to science to explain the function of the classical guitar top and attempts to translate the functions of physics into a form the luthier can use at the bench.

Controlling Strings, Wood, and Air

1980
GALQ Vol.8#3 p.8   BRB1 p.300            read this article
Carleen Hutchins                                                                                           

▪ Carleen Hutchins gives an introduction to the work of the Catgut Acoustical Society at the GAL’s 1979 Convention in Boston.

Resonance

1980
DS#145   BRB2 p.99            
Roger Siminoff                                                                                           

▪ The author considers X braces as structural elements and tone bars as tone adjusters, and that tone color can be altered by the stiffness of the tone bars and the size of the soundhole. Despite the possibilities, no examples for use are given.

Discovering Guitar Resonances

1979
DS#121               
Warner-W. Schultz   Jack Frarey                                                                                       

▪ This study was undertaken in the hope of furnishing a simple and inexpensive method of following the resonance characteristics of guitars during the process of construction.