SIGMA GUITARS Dm-18
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Sigma
https://www.sigma-guitars.com
hankins@sigma-guitars.com
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SAICO SAS
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DM-18: The "Dreadnought" Spirit in a Timeless Wood Configuration
The DM-18 is part of the great tradition of folk guitars in the dreadnought format, a standard appreciated for decades for its breadth and acoustic power. The combination of solid spruce and mahogany is among the most sought-after: it offers a clear response, good versatility, and an immediately musical character, whether played with a pick or fingerstyle.
For Whom and Which Styles?
Thanks to its dreadnought size and solid top, the DM-18 is well suited for motivated beginners as well as intermediate players looking for a responsive and expressive folk guitar. It excels particularly in folk, pop, country, chanson, and energetic strumming, while remaining convincing in picking when clear and articulated notes are desired.
Sound Characteristics
The solid Sitka spruce top provides clarity, attack, and beautiful dynamics: the harder you play, the more the guitar responds with breadth, making it an excellent foundation for accompaniment. The mahogany back and sides enhance the midrange and deliver a warm tone, with well-controlled lows and present highs without harshness. The dreadnought shape favors generous projection and comfortable sustain, while the bone nuts contribute to better note precision and a more "alive" resonance sensation.
Technical specifications
| Format | Dreadnought | Fingerboard | Composite |
| Left handed | No | Neck Type | Glued |
| Cutaway | No | Electroacoustic | No |
| Strings | Steel | Color | Natural |
| Nbr of strings | 6 | Finishing | Satin |
| Top | Spruce | Hardware | Nickel |
| Back&Sides | Mahogany | ||
| Model | DM-18 | Nut width | 44.5 mm / 1.75" |
| Shape | Dreadnought | Nuts | bone |
| Back and sides | mahogany | Tuners | Grover open-back |
| Neck | mahogany | Tuner finish | nickel-plated |
| Fretboard | micarta | Finish | natural gloss |
| Scale length | 25.4" / 645 mm | ||
Questions frequently asked
Is the Sigma Guitars DM-18 suitable for starting folk guitar?
This model is suitable for motivated beginners and intermediate guitarists. Its dreadnought body shape, 645 mm scale length, and 44.5 mm nut width correspond to a traditional acoustic folk guitar setup.
What sound does the spruce top and mahogany produce?
The solid Sitka spruce top delivers a clear attack and dynamic response. The mahogany back and sides support the midrange with controlled lows. This combination favors well-defined chords and distinct notes when fingerpicking.
Is the DM-18 electro-acoustic?
No, this guitar is acoustic only and does not have built-in electronics for direct connection to an amplifier or PA system.
Can it be used for both strumming and fingerpicking?
The dreadnought body provides a volume suitable for rhythmic strumming and vocal accompaniment. The solid top maintains clear response at low playing volumes, useful for articulating notes in fingerpicking.
What accessories should be chosen for this dreadnought?
It is possible to opt for a gig bag or case designed for dreadnought folk guitars. A set of acoustic steel folk strings, a capo, and a chromatic tuner are also compatible with this 6-string steel string configuration.



