The Teisco SD4L is designed with a thick metal plate that attaches the pickups to the body.
This month’s column was a little somber for me, because I learned about the passing of one of the most amazing people I’ve ever encountered. Here I sat, watching an actual snowstorm (which is rare these days), and writing about an obscure German guitar, when I got a message from an expat in Japan who learned about the passing of a true legend: Yukichi Iwase. He was one of the early innovators of Japanese instrument making. I’ve written about him a few times before because of his Voice Guitars company and his contribution to the early days of Teisco (he was among the original employees).
I learned about Iwase through my American book publisher, Ron Middlebrook, who has known a bunch of excellent pedal-steel guitar players all over the world. In Japan, he knew a fine player named Kiyoshi Kobayashi, otherwise known as “Lion.” Lion referred to Iwase as the “maestro,” and in a few months, arranged for us to meet in Tokyo. So imagine this, good reader: Here I am, about the size of a refrigerator, and I’m ambling into this old jazz club to meet all 5'4″ of Iwase-san, smiling as wide as the moon! One of the first things he said to everyone was to the effect of, “No wonder Japan lost the war, because of the size of Americans!” He had an excellent sense of humor and an excellent memory, and provided me with so much of the early guitar history of Japan, and I am forever grateful.
Iwase-san had left the original Teisco Company in the early ’60s, so I wanted to highlight one of the guitars he helped to design and produce during his tenure at the first factory. The uber-strange Teisco SD4L was introduced to the guitar-playing world in the spring of 1962, and was apparently inspired by an old Italian electric guitar of the time. Perhaps a Wandre? Iwase wasn’t quite sure.
Yukichi Iwase, who passed away earlier this year, was one of the early innovators of Japanese instrument making.
The SD4L features an offset body design with extreme and abrupt lines. I believe this was the only truly made Teisco to feature a plywood body. Made with a lot of thin veneers, the guitar is on the heavy side, and at the time of its design, the thought was that a plywood construction of this sort would survive the climate changes of players outside the Japanese mainland. To be honest, not many of these left Japanese shores.
But the coolest feature of this model is the hard kitchen formica covering on the front and back. Simply glued on and formed to the shape of the plywood body, this guitar has a tendency to dig into your body in unpleasant ways, but who cares! It’s like something straight out of an old American diner! Iwase described the material as what was found on “kotatsu” tables, which were like coffee tables, but heated.
“Here I am, about the size of a refrigerator, and I’m ambling into this old jazz club to meet all 5'4″ of Iwase-san, smiling as wide as the moon!”
The cutout on the headstock was another Iwase original, as was the electronics layout. This earlier model features four pickups that were taken direct from the lap-steel guitars that Teisco was producing at the same time. Later editions of this model have the very first, and now famous, Teisco gold-foil pickups that became popular with all sorts of American players, including Ry Cooder.
Each pickup has an on/off switch, two volumes, and preset tone controls for rhythm and solo settings. The sound of these early SD4L guitars can get a little destructive since the pickups can be a little microphonic, but they are controllable in the hands of a capable player. There is a nice hint of resonance that tends to come from all the guitars that were designed with a thick metal plate attaching the pickups to the body. It’s subtle, but cool.
I have all my interviews taped, and I went back to watch all the times that Iwase and I met. Of course, we had to have translators, but we were able to enjoy our time together, and I am extremely happy to have known him. I remember that he was surprised that someone from outside of Japan had an interest in him, as are most of the older people I have interviewed over the years. He was humble and creative and kind, and I will miss him dearly.
1962 Teisco SD4L Guitar Demo
- From Teisco to Voice: The Story of Iwase Denshi ›
- Teisco’s Offering to the Early 6-String Bass Race ›
- Wizard of Odd: Stella—A Story of Strange Solidbodies ›
Phat Machine
The Phat Machine
The Phat Machine is designed to deliver the tone and responsiveness of a vintage germanium fuzz with improved temperature stability with no weird powering issues. Loaded with both a germanium and a silicon transistor, the Phat Machine offers the warmth and cleanup of a germanium fuzz but with the bite of a silicon pedal. It utilizes classic Volume and Fuzz control knobs, as well as a four-position Thickness control to dial-in any guitar and amp combo. Also included is a Bias trim pot and a Kill switch that allows battery lovers to shut off the battery without pulling the input cord.
Silk Worm Deluxe Overdrive
The Silk Worm Deluxe -- along with its standard Volume/Gain/Tone controls -- has a Bottom trim pot to dial in "just the right amount of thud with no mud at all: it’s felt more than heard." It also offers a Studio/Stage diode switch that allows you to select three levels of compression.
Both pedals offer the following features:
- 9-volt operation via standard DC external supply or internal battery compartment
- True bypass switching with LED indicator
- Pedalboard-friendly top mount jacks
- Rugged, tour-ready construction and super durable powder coated finish
- Made in the USA
Static Effectors’ Street Series pedals carry a street price of $149 each. They are available at select retailers and can also be purchased directly from the Static Effectors online store at www.staticeffectors.com.
Galloup’s Plek tech Adam Winarski preps a Yamaha acoustic for the machine.
Presently, many certified guitar-repair specialists possess the expertise required to deliver an instrument that both sounds and plays wonderfully. The standards set by manufacturers and distributors have significantly risen, safeguarded by rigorous quality protocols to guarantee the best possible acoustic experience for customers. Additionally, lutherie training has raised the bar for critical processes, and one of the most tricky is fretwork.
Traditional fretwork once involved manual labor, with technicians utilizing sandbags or similar supports to steady the neck as they straightened it with a truss rod during the filing process. A notable advancement in this field came in the mid 1970s when Don Teeter, an author and repair expert, imposed a new method: fixing the guitar body to the bench and using blocks to maintain the neck in a playing position. This refinement was one of many in the continued quest to produce superior instruments by standardized methods.
An example of the Plek’s readings from an acoustic guitar.
Photo courtesy of Galloup Guitars
In the late 1970s, another pivotal innovation was introduced by Dan Erlewine. He created an advanced fret jig with a specialized body-holding system and neck supports, adding another layer of precision to the repair process. During my collaboration with Dan in 1985, we developed a rotating neck jig that counterbalanced the forces of gravity, keeping the instrument in its playing orientation while adjusting the neck supports. This step represented a significant leap in establishing control and standardization of fretwork procedures in our industry. By 1986, our approach had evolved into a freestanding workstation coupled with a sophisticated hold-down mechanism and enhanced neck supports, culminating in increased accuracy, efficiency, and consistency. Over the decades, the Erlewine/Galloup rotating neck jig has become a benchmark in numerous shops, enhancing fretwork performance.
"This step represented a significant leap in establishing control and standardization of fretwork procedures in our industry."
By the 1990s, automated and computerized technologies permeated the guitar manufacturing and repair sectors. Initially applied by import companies in the mass production of guitars, the technology, although expediting processes, did not immediately achieve high execution standards. However, the tech dramatically improved over time, with computer-driven systems eventually transforming the industry. Contemporary automated production utilizing such advancements meets exceedingly high standards of precision. Some bespoke guitar manufacturers, such as Steve Andersen, were pioneers in adopting these methods, but it was companies like Taylor that established them in the modern era.
Inevitably, the progression of technology extended beyond the mere production of parts. Around 1995, German engineer Gerd Anke envisioned the integration of computer-assisted technology into enhancing instrument playability, giving rise to Plek technology, which uses computers to precisely measure and analyze the various components of a guitar, like neck relief, fret height, nut and bridge specs, and more. Nashville guitar-repair tech Joe Glaser was among the first to recognize the machine’s value, followed by San Francisco luthier Gary Brawer. When Heritage Guitar Inc. invested in a Plek machine, the guitar industry could no longer disregard the significance of this innovation.
“The machine’s scanning data confirmed that there was one nature of an ideal fret plane, done by hand or machine, and unsurprisingly, it conformed exactly to what physics predicts, not personal mojo.”
In the spring of 2022, Galloup Guitars obtained its first Plek machine. Promptly, our technician Adam Winarski paved the way for the Plek’s integration in our shop. Now, it’s a rarity for an instrument to leave our shop without having undergone Plek analysis and machining. Impressed by the results of our integration, we created “Intro to Plek” as a course for all students enrolled at the Galloup School of Lutherie, offering our students a practical introduction to this technology. We furthered this educational initiative with a comprehensive one-week intensive “Plek Certification Training Course” for both students and the public. This advanced Plek course serves those seeking to boost their knowledge base and employability in this high-precision field.
Plek is rapidly becoming an industry standard for major manufacturers and smaller shops alike. However, this does not mean that those without access to this technology cannot execute proficient fretwork. Personally, I continue to use my Erlewine/Galloup neck jig—not only out of nostalgia, but also because it remains an excellent method for delivering accurate and reliable guitars. Still, it’s undeniable that the process of fretting, fret dressing, and analytics of fretted instruments has undergone significant transformation, resulting in better sounding—and playing—guitars. And ultimately, that’s what it’s all about.