Posted on October 10, 2025October 10, 2025 by Dale Phillips A Savart-Style Upright Bass A Savart-Style Upright Bass Constructing a Simple 34" Scale Upright Bass Suitable for Bass Guitarists by R.M. Mottola Originally published in American Lutherie #80, 2004 and Big Red Book of American Lutherie Volume Seven, 2015 Regular experimentation on my part is directed toward the goal of producing the sound of the double bass from instruments that can be readily played by the bass guitarist. Many approaches are possible and the instrument described here is the result of one of these. The design process began with functional requirements for the bass. This list was pretty basic. The target group of musicians was bass guitarists, and this constrained the scale length and a number of the critical dimensions of the neck and fingerboard to be similar to those of bass guitars. The instrument had to be musically viable in all styles in which the double bass is played pizzicato. It had to be transportable too, an easy design goal given the standard for portability set by the unwieldy double bass. To that list I added one more requirement — that the prototype be relatively simple and cheap to build. The bass is just like any other instrument, only more so. Material cost is higher because there is more material. Construction time is greater because there is simply more to construct. The upshot is that a bass design experiment can consume a lot of time, effort, and money before the success or failure of the experiment is known. I wanted to keep both cost and effort down for the prototype. Become A Member to Continue Reading This Article This article is part of the Articles Online featured on our website for Guild members. To view this and other web articles, join the Guild of American Luthiers. For details, visit the membership page. MEMBERS: login for access or contact us to setup your account.
Posted on October 9, 2025October 9, 2025 by Dale Phillips The Bassola The Bassola Approximating the Sound of the Upright Bass by R.M. Mottola Originally published in American Lutherie #64, 2000 and Big Red Book of American Lutherie Volume Six, 2013 Clearly the best way to get the sound of an upright bass played pizzicato is with an upright bass. But that instrument poses a number of problems to bass guitarists and even to upright players — the former can’t play the instrument, and the latter often simply hate having to carry the thing around. Experiments toward approximating the sound of the upright in an instrument playable by bass guitarists constitute something of an ongoing project for me. This article describes one such effort, a large (for a guitar) acoustic instrument I call a Bassola, for no other reason than that it rhymes nicely with my last name. The project began with listing the functional specifications for the instrument. When engineering a new instrument (or anything that represents more than a trivial departure from some existing and well-specified entity, for that matter) I find it very useful to have a target to shoot at. This makes it easier to plan and deal with the design tradeoffs that inevitably occur, plus it provides some criteria against which to judge the finished product. Become A Member to Continue Reading This Article This article is part of the Articles Online featured on our website for Guild members. To view this and other web articles, join the Guild of American Luthiers. For details, visit the membership page. MEMBERS: login for access or contact us to setup your account.
Posted on June 21, 2025September 15, 2025 by Dale Phillips The Helmholtz Resonance The Helmholtz Resonance A Brief and Not-Too-Technical Introduction to the History and Theory of the Lowest Sound-Producing Mode, and Some Practical Considerations for Instrument Designers by R.M. Mottola Originally published in American Lutherie #82, 2005 and Big Red Book of American Lutherie Volume Seven, 2015 Research in physics and acoustics of stringed instruments shows us the mechanism by which sound is produced by those instruments. The plates of the instruments and the air inside vibrate in various patterns, each pattern producing sound in a range around a certain frequency. Each of these patterns can be considered to be a resonator, each with its own characteristics. Some of these resonators exist as modes of vibration of different areas of the plates of an instrument, and some are modes of vibration of the air inside the instrument. One of the air resonators is composed of the mass of air inside the instrument and the mass of air within and around the soundhole. The natural frequency of this resonator is near the lowest note that an instrument can make. It is generally labeled the A0 resonance, the letter A standing for the word “air” and the numeral 0 indicating that this is the first in a series of air resonances. This resonance is also referred to as the so-called Helmholtz resonance. Understanding how this resonance works in stringed instruments is not difficult, particularly given a historical perspective. Complete understanding involves some math, but a practical understanding can be had without it. Therefore, I am putting off presenting the formulae in the main article and have included them in a sidebar. Become A Member to Continue Reading This Article This article is part of the Articles Online featured on our website for Guild members. To view this and other web articles, join the Guild of American Luthiers. For details, visit the membership page. MEMBERS: login for access or contact us to setup your account.
Posted on June 21, 2025September 15, 2025 by Dale Phillips The Helmholtz Formula The Helmholtz Formula by R.M. Mottola Originally published in American Lutherie #82, 2005 and Big Red Book of American Lutherie Volume Seven, 2015 The resonant frequency of a mass spring resonator can be determined by the following formula: Become A Member to Continue Reading This Article This article is part of the Articles Online featured on our website for Guild members. To view this and other web articles, join the Guild of American Luthiers. For details, visit the membership page. MEMBERS: login for access or contact us to setup your account.
Posted on June 19, 2025September 12, 2025 by Dale Phillips Product Review: Colorado Soft Cases Product Review: Colorado Soft Cases by R.M. Mottola Originally published in American Lutherie #75, 2003 and Big Red Book of American Lutherie Volume Seven, 2015 The item reviewed in the following paragraphs was purchased by the author at full price through normal sales channels. A draft of this review was sent to the manufacturer/seller prior to publication so that any factual errors could be corrected. Colorado Soft Cases High-quality soft instrument cases (gig bags) and case covers are readily available for most standard-size instruments. There are dozens of manufacturers of these off-the-shelf items, and it is pretty easy to find bags for your instruments in a wide range of price and quality. Since the inside dimensions of soft cases are, well, softer than those of hard cases, it is even likely that you can make an off-the-shelf case fit a nonstandard instrument, at least if the instrument is not too nonstandard. But if you’ve got something way out of the ordinary, you’ll need a custom-made bag for it. It is probably safe to say that any bag manufacturer will make cases to your specs if you order enough of them. If you make one-of-a-kind instruments and need just one though, the number of manufacturers that are willing to accommodate your needs drops precipitously. Colorado Case of Fort Collins, Colorado, (coloradocase.com) is one case company that does make custom cases in any quantity, and their cases are the subject of this review. First, a word or two about soft cases. Why would you want to use a soft case in the first place, when a hard case offers considerably better protection? Probably the most compelling reason is that your customers want the option. In my experience this is particularly the case if the instrument in question is either a solidbody instrument or is particularly large, like an upright bass. Solidbody instruments are pretty robust to begin with and so protection from scratches and abrasions may be all the user wants out of a case. Really large acoustic instruments are no less delicate than their smaller counterparts, but the weight of a large hard case can sometimes compel a user to trade off some amount of protection for some reduction in weight. Become A Member to Continue Reading This Article This article is part of the Articles Online featured on our website for Guild members. To view this and other web articles, join the Guild of American Luthiers. For details, visit the membership page. MEMBERS: login for access or contact us to setup your account.
