Small Jumbo (SJ)
The Small Jumbo (SJ) is one of John’s most celebrated and influential models. It was years in development, and the early prototypes were so successful that the SJ ultimately became the foundation for the redesign of his entire guitar line. Its outline represents a more modern interpretation of the classic O‑style body — intentionally updated, not merely borrowed.
With a 16″ lower bout, the SJ has the ability to move air with authority when pushed, yet its refined geometry keeps the instrument remarkably responsive under a lighter touch. This balance makes it equally compelling for dynamic strumming and expressive fingerstyle work.
The SJ comes standard with a cutaway and a 13‑fret neck‑to‑body joint, a combination that enhances upper‑fret access while contributing to the model’s distinctive voice and feel. It’s a versatile, contemporary instrument that has earned its place as a cornerstone of John’s modern designs.
SJ Specifications
As a custom guitar, most of the specifications listed can be modified to suit your needs. The listed specs are guidelines that are typical for this model
SJ Outline/Bracing
Top Bracing Double X – Adirondack Spruce
Back Bracing Radial – Adirondack Spruce
Body Length 19-1/2″
Width Lower Bout 14-1/4″
Width Upper Bout 10″
Width at Waist 8-1/4″
Body Depth 4-1/8″
Cutaway Available
Body Binging Typically Wood
Fret at Body Connection 12th Fret
Neck Mahogany
Bridge Typically Ebony – Artisan Style
Fretboard Typically Ebony with 16″ Radius
Fretboard Binding Typically matches Body Binding
Compensated Nut Typically Bone 1-3/4″
Saddle .200″ wide Bone – Compensated
String Spacing at Bridge 2-1/4″
Bridge Patch Composite – Maple
Typical Scale Length 24.9″
Headstock Typically SSP (Straight String Pull)
Truss Rod Custom Titanium
Truss Rod Access Stealth at Headstock
Tuning Machines Gotoh 510s (Typical)
Finish Urethane
Pickgaurd On Request
Case Ameritage
