Dana’s vision for the six Aged Tone models blends vintage appearance and Dana’s exclusive approac to voicing with the new Aged Tone finish and the Aged Tone top . Our new Aged Tone tops are treated with a unique curing process. The commercial version of this process, known as, “thermo curing”, “wood torrefaction” or “roasting”, was developed in Finland to enhance durability and appearance of such products as siding, decking, and outdoor furniture. Commercial processing typically uses higher curing temperatures to maximize stability and rot resistance. Higher temperatures, however, can also sacrifice structural integrity. The process used to cure our Adirondack tops is a highly controlled, low-temperature variation of the basic commercial treatment. During processing, water, sugars, and resins are cooked off, leaving behind cellulose and lignum--the “glue” that binds cellulosic fibers together. Once processed, mass and weight are reduced, absolute stiffness is increased and internal damping is decreased; stiffness-to-weight ratio and Velocity of Sound (the rate at which vibration transmits through solid material) are dramatically increased. Our observations concur with industry research data, which reports increased stiffness at lower curing temperatures. It’s thought by at least one expert that low-temperature curing optimizes the distribution of lignum throughout the cellulosic structure, while higher temperatures break lignum down. The trick is to find the temperature and curing schedule that optimizes Velocity of Sound. Like naturally cured spruce, Aged Tone tops are darker in color, opaque vs. translucent, highly stable when exposed to changes in humidity, and have a sweet, woody smell. These same changes naturally occur in spruce tonewoods after many decades of exposure to oxygen, UV radiation and other environmental elements.
Other specifications include:
Top: Aged Tone Adirondack Spruce Back: Madagascar Rosewood Braces: Aged Tone Torrefied Adirondack braces Glue: Animal Protein construction Rosette: Large Soundhole Ivoroid Body Binding: Ivoroid Purfling: Vintage Style Herringbone Border w/Back Purfling Backstrip: Zipper Head Shape: Mahogany Square Head With Diamond Head Veneer: Madagascar Rosewood Head Inlay: No Logo on Headstock Overlay, Decal on Back Head Binding: None Fretboard Wood: 14/21 Fret Ebony Nut Width: 1 3/4" Fretboard Inlay: None Fretboard Binding: Ivoroid Pickguard: Celluloid Large Soundhole Bridge: Traditional Ebony Belly w/2 5/16 Spacing Label: Standard Tuners: Waverly Relic Nickel/Oval Aged Tone Body Finish Ebony Pins w/Pearl Dots Satin Headstock Finish Case: Hardshell # 7709
For more information about the Bourgeois Large Soundhole OM Aged Tone Madagascar OM , please contact us.