Re: NGD... Martin HD-28V
What's the difference in sound between the HD and regular D-28?
Original pre-war D-28s had top bracing that was scalloped. As music styles and strings technology progressed, musicians were loading progressively heavier strings on the acoustics, and Martin was concerned about the heavier strings and higher tension damaging the guitar. They transitioned the bracing to standard straight bracing. In 1976, they reintroduced scalloped top bracing (associated with the prewar style along with the Herringbone purfling) as the HD-28 model. More recently they have introduced the “Vintage” series. HD-28V shifts the scalloped bracing forward, toward the sound hole and adds a modified V profile neck, vintage tuners and inlay style, etc.
Both modifications to the bracing (scalloping and shifting forward) creates a more resonant and easier moving top. One through reducing the thickness of the bracing and one through actually moving it to provide more “unbraced” surface area. Tonally it proves move bass, as well as allowing the top to begin to resonate with less input energy. What that means for me is that a standard D-28 requires more right hand energy before it begins to “sing” whereas the modified versions begin to produce that tone with a little less right hand energy. Lighter strumming and fingerpicking sound a bit better to me on the scalloped versions. However, the standard braced versions allow you to play harder and harder and get more volume, a scalloped braced one may max out a little sooner. Additionally, top stiffness comes into play as well, with Adirondak being a touch stiffer than Sitka. (Sitka is the standard, Adirondak is be special order on these standard production guitars)
To add complexity there is also the D-35/HD-35 line, these have ¼” bracing rather than the 3/8” bracing of the 28 series. This again provides more bass due to reduced bracing thickness. Some perceive this as “power” some as “muddiness”. In the end, the Rosewood Martin Dreadnought is a very familiar tone and by playing the Standard and HD versions of the 28 and 35, everyone finds their specific version of that tone that they prefer. (Similar to Strats with Ash/Alder, Maple/RW, A2/A3/A5, etc.)
AND... as a caveat, I'm very new to all this acoustic stuff, anything I mis stated above, I welcome a correction on.
