I’ve just come to an understanding that an Ovangkol guitar is very similar to Rosewood. Could this be a very close equal to the Brazilian Rosewood Guitars? Would anybody notice the difference?
Like violins, guitars are a mechanically-driven vibration amplifiers. The top is the soundboard, and the tension of the strings to the bridge drives the energy from the vibrating strings into the soundboard. It is the soundboard that compresses air inside the body cavity, and the sides and back’s job is to not vibrate, but to contain the sound pressure.
Thus, while flexibility is good for the top wood, you want rigidity for the sides and back.
While a denser or thicker wood would bring the resonance down towards the bass end, the effect is very slight. The construction techniques of the back and sides affect the sound far more than the material.
We observe that the light vibrant woods are great for the top, while heavy, denser woods serve best as back and top. The hardest woods, ebony, maple, walnut or rosewood, is best for the non-vibrating parts, such as the fingerboard and the bridge.