properties is the stress that the cells
are under. When we dry wood, it tries
to shrink, but is restrained (various
reasons) and so, on a small scale has
stress within the cell. Most guitar
manufacturers heat the wood and use
months of heat to cause the wood to
relax these stresses.
Because wood shrinks as it dries
and swells when it gains moisture, the
moisture content does have a small effect on acoustic properties.
Another factor is whether we
want to hear a clear set on tones and
overtones, of if we want a more mellow
sound with a huge variety of overtones.
The clearer sound comes when the
majority of wood cells are close to the
same size. (Pretty complex indeed.).
Or maybe we do want these hollow
cells filled so that very little vibration
of the air inside them will contribute
to the sound we hear...the vibration of
air within the chamber of the instru-
ment itself will be the key determinant
on the sound.
So, now we return to the question
about the qualities of different wood
species. The truth is that due to many
properties that affect the acoustic
properties of wood, and maybe even
what we in 2018 consider to be good
and bad sound, we need to consider,
basically by trial and error, how a spe-
cific species sounds and how variable
that sound is from piece to piece. We
also want to be sure that these hollow
cells are not filled with adhesive or
finish, as we might expect different
acoustic properties when filled, that
we likely would find inferior...but who
knows for sure without trying it? We
think we know that open, uniform
sized, and stress free cells are best.
Certainly, the uniformity and open-
Sinker redwood is used on this Taylor
I would easily expect to see many operations
looking at 5 percent improvement and some
doing even more when they fine tune the overall