C.F. Martin & Co MA4850 SP Bass Phosphor Bronze Medium 45-105
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Manufacturer Information
Martin Strings
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A simple, effective, and musical replacement string
The Martin MA4850 SP Bass Phosphor Bronze Medium is a single acoustic bass string, convenient for quickly restoring your sound and feel after a break or loss of brightness. Its phosphor bronze highlights a clear attack and rich harmonic content, particularly appreciated in fingerstyle and pick playing when seeking a clean low end and natural presence.
With a gauge of 45, this string falls into the "medium" category: responsive enough to maintain stability and tension while remaining comfortable for regular playing. It's an ideal solution if you want to keep the balance of your "45-105" set by replacing only the necessary string.
Technical specifications
| Category | Acoustic single string | Spun | round |
| Draw | 45 | Material | phosphore bronze |
| Nbr of strings | 1 | ||
| Packaging | single string | Gauge | 45 |
| Number of strings | 1 | ||
Questions frequently asked
Does this Martin string fit as a replacement for the low E string in a 45-105 set?
With its 45 gauge, this single string can replace the corresponding string in a 45-105 acoustic bass set. It helps maintain the gauge balance of the set.
What material is the MA4850 SP Bass Phosphor Bronze Medium made of?
The round winding is made of phosphor bronze. This material provides a clear attack and natural harmonic richness.
Is the Martin MA4850 sold individually or as a complete set?
The packaging contains a single string. This reference is designed for targeted replacement after a break or loss of brightness.
What gauge is this Martin acoustic bass string?
The stated gauge is 45, corresponding to a medium setup. The string provides good tension while remaining suitable for regular playing. This value aligns with the balance sought in a 45-105 set.
What sound does a phosphor bronze acoustic bass string produce?
Phosphor bronze promotes a clean low end and natural presence, with a defined attack. This tone is considered suitable for fingerstyle and pick playing.



