Martin Martin Super D-18 | Standard Series

The Architectural Evolution of Mahogany Power The Martin Super D-18 represents a profound structural evolution of the acoustic icon. While maintaining the timeless Style 18 silhouette, this new Super D body size re-engineers the internal physics of the instrument to provide 20% more air volume. This is a masterclass in acoustic displacement; by expanding the traditional footprint, Martin has effectively "unlocked" a lower frequency floor for genuine mahogany that was previously inaccessible. Constructed with solid genuine mahogany back and sides, the Super D-18 retains the hallmark "dry" and "punchy" response expected of the D-18, but adds a sub-bass presence and a thunderous resonance that fills a room with significantly less physical input from the player. This architectural shift results in a massive increase in the dynamic ceiling—adding a depth of character usually reserved for the density of rosewood, all while maintaining the clean, articulate "woodiness" of premium mahogany. The inclusion of Forward-shifted Golden Era scalloped X-bracing—a premium structural refinement typically found in the Modern Deluxe series—ensures that despite the larger body, the spruce top remains hyper-responsive to a light touch. It allows the instrument to handle aggressive flatpicking without "breaking up," making it the ultimate tool for the ensemble player who needs to command the low-end and be heard in a crowded mix without the "muddiness" of an over-driven box. The Super D-18 isn't just a louder guitar; it is a more efficient engine for acoustic expression. Stock photos shown, individual color and grain will vary from guitar to guitar. Body & Construction Body Size: Super D-14 Fret Construction: Dovetail Neck Joint Bracing Pattern: Forward Shifted X-Brace Brace Shape: GE-Scalloped (Golden Era style) Brace Material/Size: Spruce, 5/16" Top Material: Solid Spruce with Aging Toner Back & Side Material: Solid Genuine Mahogany Finish (Body): Full Gloss Finish (Neck): Satin Binding: Black Rosette: Old Style 18 Multi-Stripe Pickguard: Faux Tortoise Neck & Playability Neck Material: Select Hardwood Neck Shape: GE Modified Low Oval Neck Taper: High-Performance Taper Scale Length: 25.4" Nut Material: Bone Nut Width: 1 3/4'' Fingerboard Width at 12th Fret: 2 1/8'' Fingerboard Material: Solid Black Ebony Fingerboard Inlay: Old Style 18 (Abalone) Number of Frets Total: 20 (Neck joins at 14th) Side Dots: White Hardware & Appointments Bridge Material: Solid Black Ebony Bridge Style: GE Modern Belly - Drop in Saddle Bridge String Spacing: 2 5/32" Saddle: Compensated Bone (16" Radius) Tuning Machines: Nickel Open Gear with Butterbean Knobs Bridge Pin Material: Black Ebony (no dots) Headplate: East Indian Rosewood with Script Old Style Overlay Case: Molded Hardshell (Included) Plek'd: Yes (Factory Precision Optimized)