C.F. Martin & Co MA500 AUTHENTIC SP EXTRA LIGHT 92/8 PHOSPHOR BRONZE EX. LIGHT 10-14-23-30-39-47 12 STRINGS
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Manufacturer Information
Martin Strings
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Extra light feel to unleash the dynamics of your 12-string
The Martin MA500 Authentic SP Extra Light strings are aimed at guitarists who want to regain the brightness and depth typical of Phosphor Bronze, while enjoying a softer feel under the fingers. This extra light gauge facilitates long sessions, fast transitions, and subtle nuances, especially appreciated on a 12-string acoustic guitar where overall tension can quickly become demanding. Thanks to a design focused on durability, with a robust core and anti-corrosion treatment (tin plating on 6 strings), you get a consistent response, stable intonation, and coherent musical output from the first chord to the last chorus.
Technical specifications
| Tension | Extra soft | 1st cord pull | 10 |
| Type of cord attachment | Ball end | Nbr of strings | 6 |
| Category | acoustic | Material | 92/8 phosphore bronze |
| Classification | Extra light | Special feature | 12-string |
| Draw | 10/10-14/14-23/09-30/12-39/18-47/27 | ||
| Brand | Martin | Alloy | 92/8 Phosphor Bronze |
| Model | MA500 | Core | very strong |
| Series | Authentic Acoustic (Authentic SP) | Corrosion protection | tin plating on 6 strings |
| Type | acoustic guitar strings | Winding | high quality |
| Configuration | 12 strings | Sizes | 10-14-23-30-39-47 |
| Gauge | Extra Light | Other version available | 80/20 Bronze |
Questions frequently asked
Are these strings suitable for a 12-string acoustic guitar?
This set is configured for a 12-string acoustic guitar, with gauges 10/10-14/14-23/09-30/12-39/18-47/27.
What is the gauge of the Martin MA500 Authentic SP PB Extra Light?
The main gauge is 10-14-23-30-39-47. The associated octave strings are 10, 14, 09, 12, 18, and 27.
What tone does the 92/8 phosphor bronze produce?
The 92/8 Phosphor Bronze alloy is designed to deliver the characteristic brightness and depth of this material. It promotes a consistent musical output on a 12-string acoustic guitar.
Is the extra light gauge softer on a 12-string?
With a first string at .010, this Extra Light gauge offers a softer feel under the fingers. It facilitates fast chord changes and dynamic control despite the overall tension of a 12-string.
Are the MA500 strings corrosion resistant?
Six strings feature an anti-corrosion tin plating. The very strong core also contributes to consistent response and tuning stability.



