Eastman E40OM-TC Natural thermo-cured
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- This item is covered for 3 years
The Essentials to Know About the E40OM-TC Natural Thermo-Cured Guitar
The Essentials to Know About the E40OM-TC Natural Thermo-Cured Guitar
- Solid Adirondack AAA Thermo-Cured Spruce Top: bright attack, wide dynamic range, and quick response.
- Solid Rosewood Back and Sides: deep lows, sparkling highs, and beautiful harmonic complexity.
- OM Format (15" x 4-1/4" / 381 x 108 mm): ideal balance between comfort, precision, and projection.
- Premium Luthiery: hand-scalloped X-bracing, ebony fingerboard and bridge, bone nut.
Manufacturer Information
Eastman
https://www.eastmanguitars.com
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Eastman Music Europe BV
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An OM from the E40 Series Designed for an "Open" Sound and Thermo-Cured Patina
With its solid Adirondack spruce top thermo-cured, this E40OM-TC targets a register that feels immediately more "played": a guitar sensation that opens quickly, with a dry, articulated grain and excellent clarity. The OM format, appreciated for decades for its balance, is here presented in a high-end approach where every choice (scalloped bracing, ebony, inlays) serves both musicality and aesthetics.
For Which Guitarists and Styles?
This acoustic guitar is aimed at demanding intermediate and advanced players seeking a responsive, precise, and expressive OM. It excels in fingerstyle, folk, blues, acoustic pop, and pick accompaniment, while remaining very comfortable for nuanced playing (light picking) as well as more assertive attacks thanks to the typical dynamic range of Adirondack spruce.
Sound Characteristics
The solid Adirondack AAA thermo-cured spruce soundboard delivers quick response, clear articulation, and a strong ability to handle aggressive playing without saturation: ideal for maintaining clarity note by note. The solid rosewood back and sides enrich the spectrum with deep lows, sculpted highs, and generous harmonics, providing a sense of width and depth. The hand-scalloped X-bracing promotes projection and top flexibility, enhancing sound openness and sustain. Finally, the ebony (fingerboard and bridge) reinforces attack and definition, particularly appreciated on an OM oriented towards precision.
Technical specifications
| Body Dimensions | 15" x 4-1/4" / 381 x 108 mm | Fingerboard Radius | 12" / 305 mm |
| Soundboard | solid Adirondack AAA thermo-cured spruce | Scale Length | 24.9" / 632 mm |
| Back and Sides | solid rosewood | Nut | bone, 1 3/4" / 44.5 mm |
| Bracing | hand-scalloped X-bracing | Frets | 20 Jescar-FW43080 |
| Rosette | classic | Truss Rod | dual-action |
| Binding | top, back, fingerboard, and headstock | Bridge / Saddle | ebony with snowflake inlay / bone |
| Purfling (material) | Ivoroid / Abalone | Bridge String Spacing | 2-5/32" / 54.8 mm |
| Neck Material | mahogany | Logo | abalone headstock inlay |
| Neck Profile | traditional Even "C" | Inlays | snowflakes in mother-of-pearl |
| Fingerboard | ebony | ||
Questions frequently asked
Is this OM suitable for fingerstyle and pick playing?
The OM format, combined with a solid AAA thermally cured Adirondack spruce top, is suitable for fingerstyle, folk, blues, and pick accompaniment. The hand-scalloped X-bracing enhances projection and sustain.
What are the dimensions and scale length of the Eastman E40OM-TC?
The body measures 381 mm in width and 108 mm in depth. The scale length is 632 mm, or 24.9 inches. The fingerboard has a 305 mm radius, or 12 inches.
What is the nut width and string spacing?
A 44.5 mm bone nut width and 54.8 mm bridge string spacing are specified.
Does the Eastman E40OM-TC Natural THERMO-cured have built-in electronics?
No preamp system, microphone, or output is listed in the provided specifications.
What woods are used for the body and neck?
The body pairs a thermally cured solid Adirondack spruce top with solid rosewood back and sides. A mahogany neck, ebony fingerboard, and ebony bridge complete the construction.



