Martin 12 String Strings article
The Complete Guide to Martin 12 String Strings
Martin 12-string strings are engineered specifically for 12-string guitars, balancing brightness, warmth, and tuning stability. Discover which gauge and material suit your playing style.
Martin 12 String Strings: Choosing the Right Set
Martin 12-string strings are specialised sets designed specifically for 12-string guitars, where each of the six standard strings is doubled by a thinner companion string. Choosing the right 12-string string set is crucial; a poor choice can result in tuning instability, excessive neck stress, or a tinny, unbalanced tone. Martin, one of the world's most respected guitar manufacturers, produces string sets engineered to suit their guitars' specifications whilst offering sufficient tension, tonal balance, and durability for regular playing.
The challenge with 12-string guitars is balancing brightness and body. The doubled pairs create a shimmering, chorus-like effect that defines 12-string tone, but if the strings are poorly matched or too light in gauge, the guitar loses fundamental richness and becomes difficult to keep in tune. Martin 12-string string sets solve this by carefully calibrating the diameter and material of each pair to produce cohesive, resonant tone across the full frequency spectrum.
Understanding 12-String Guitar String Configuration
A standard 12-string set consists of six pairs of strings. The three lower pairs (E, A, D) are each paired with an identical-gauge octave string tuned one octave higher—these octaves add brightness and shimmer. The three higher pairs (G, B, E) are paired with identically gauged unison strings tuned to the same pitch, reinforcing clarity and projection. This configuration is traditional and standard across nearly all 12-string guitars.
However, gauges matter enormously. The plain strings (the octaves and unisons on the higher strings) are thinner than the wound lower strings they accompany. For instance, a typical 12-string set might pair a 0.046" wound E string with a 0.026" plain octave E. The diameter differences are precise; if you attempt to pair a standard 6-string set with arbitrary smaller strings, you will likely encounter tuning instability and tonal imbalance.
Martin manufactures 12-string sets with precise gauge pairings. Their experience with 12-string guitar design means they understand the tension and tonal characteristics needed for their instruments' neck profiles, bridge geometry, and overall construction.
Martin 12-String String Types and Materials
| String Type | Material / Core | Sound Character | Lifespan | Best For |
|---|---|---|---|---|
| Bronze / 80/20 | 80% copper, 20% zinc wound over steel core | Bright, cutting, articulate | 2–4 weeks | Studio recording, maximum brightness |
| Phosphor Bronze | Phosphor bronze wound over steel core | Warm, balanced, mellow | 3–6 weeks | General playing, balanced tone |
| Silk and Steel | Silk windings near bridge and neck | Soft, mellow, reduced finger noise | 4–8 weeks | Fingerstyle, vintage tone, reduced tension |
| Coated / Elixir | Proprietary coating over bronze or phosphor | Preserves brightness longer | 3–4 months | Touring, frequent recording, longevity |
Martin offers 12-string sets in each of these materials. Bronze (also called 80/20) strings are bright and cutting, perfect for studio recording where maximum articulation matters. Phosphor bronze is Martin's most popular choice; these strings balance brightness with warmth and typically last 3–6 weeks with regular playing. Silk and steel sets produce a soft, mellow tone and are popular among fingerstyle players and those seeking a vintage acoustic character. Coated strings (marketed under brand names like Elixir) preserve their brightness longer, making them economical for touring musicians who record frequently.
Gauge Selection for 12-String Guitars
String gauge refers to diameter, measured in thousandths of an inch. A typical 12-string gauge might be listed as .010–.047, meaning the plain high E string is 0.010" and the wound low E is 0.047". Gauge selection affects both tone and playability. Lighter gauges (e.g., .009–.042) are easier on the fingers and require less finger strength, but produce a thinner tone and may be prone to tuning instability on 12-string guitars with longer scale lengths. Heavier gauges (e.g., .012–.054) produce fuller tone and greater tuning stability but demand more finger strength and put additional stress on the guitar's neck and bridge.
Martin typically recommends medium gauges for their 12-string models. A standard 12-string set from Martin runs approximately .010–.047 or .011–.050 depending on the specific series. Your guitar's scale length (the distance from nut to bridge) also influences the appropriate gauge; longer scales can handle heavier gauges, whilst shorter scales suit lighter gauges.
Tuning Stability and Longevity
12-string guitars are inherently more difficult to keep in tune than 6-string guitars simply because of the increased number of strings and the coupling of paired strings. Using properly gauged Martin 12-string strings improves stability significantly. Uncoated bronze and phosphor bronze strings typically stabilize within 24 hours of installation; silk and steel strings may take longer to settle. Coated strings (like Elixir) sometimes require up to 48 hours to fully stabilize.
Lifespan varies widely depending on playing intensity, humidity, and string material. A working session musician might change strings weekly; a casual player every 2–3 months. Uncoated strings begin losing brightness after 3–4 weeks of regular play; many players find this acceptable. Coated strings resist oxidation and corrosion, extending playable life to 2–4 months.
Installation and Setup Tips
Installing 12-string strings requires patience and care. The doubled string pairs demand precise winding on the tuning pegs to avoid overlapping or uneven tension. Martin string packages include clear instructions; following them carefully prevents tuning issues. A few practical tips: wind each pair onto the same peg carefully, keeping them parallel and properly seated. Stretch the new strings gently (not aggressively) once installed to help them settle and stabilize pitch. Tune up gradually to pitch over several minutes, not all at once, to avoid shocking the neck and bridge.
Consider having a luthier or experienced tech perform the first string change on a new 12-string guitar. They can ensure everything is set up correctly—proper bridge pin seating, nut alignment, and neck relief—which directly impacts how well the strings perform.
Which Martin String Set Should You Choose?
For general playing and recording, Martin Phosphor Bronze 12-string sets are the safe, versatile choice. They balance brightness, warmth, and durability well. If you prefer a brighter, cutting tone and change strings frequently (or record often), Martin Bronze (80/20) 12-string sets are excellent. For fingerstyle playing and vintage tone, Martin Silk and Steel 12-strings offer reduced finger noise and a mellow character. For touring musicians and those who record frequently, coated 12-string sets (like Martin's premium lines or Elixir-style coatings) provide better longevity and consistent tone across longer periods.
If your 12-string guitar is an older Martin or a vintage model, consult the original documentation or a luthier about the recommended gauge. Newer Martin 12-strings are typically built to handle standard medium gauges; older models might require lighter strings to avoid undue stress.
Conclusion
Martin 12-string strings are engineered to bring out the best in Martin's 12-string guitars, with careful gauge selection and material choices that ensure balanced tone, tuning stability, and longevity. Selecting the right set—considering material, gauge, and your playing style and intensity—is an investment in your instrument's sound and your playing pleasure. Whether you prefer the brightness of bronze, the balance of phosphor bronze, the warmth of silk and steel, or the longevity of coated strings, Martin offers options suited to your needs and musical goals.
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