The Tone Wooods of Acoustic Guitar
April 27th, 2008Tone woods.
Believe it or not, your sound is only as good as your wood.
Each wood has a very distinct sound that is individual to
every acoustic guitar. Like a finger print, it cannot be
recreated, even if another piece of wood is taken from the
same source.
This is due to the wood’s unique characteristics. Perhaps
there are knots in the wood, or a slightly different grain
pattern. Maybe there are some other subtle differences but
in the end, it all affects how the wood resonates. Resonate
is a fancy word for vibration, which is what wood does when
you attach strings to it.
How freely the wood resonates will affect your volume (how
loud you are) and your tone as a result of that. This
explains why that plywood (laminate) guitar sitting in the
pawnshop or music store doesn’t sound that great: The wood
is too stiff to vibrate freely.
That’s why you may frequently hear the saying “Solid top”.
While that may sound great in a sales pitch, the reason it’s
actually important is that it’s real wood, not plywood. This
transforms your tone to give you a much nicer sounding
guitar.
Before the wood actually gets to your guitar, it undergoes
quite a few steps. First off, most tone woods are either
industrially logged. This is common for many production
model guitars. Still sounds great in most cases, but there
are some imperfections.
Higher end guitars have their wood hand selected. It is
usually cut by hand and the select chunks are chosen for
quality and then shipped back to home base for further
processing.
Most manufactures of decent acoustic guitars season their
woods for a period of time. This removes excess moisture and
hardens the fats, oils, murr (gum), and other sticky googy
things that are naturally found in wood. This seasoning
protects the wood from warping and prepares it structurally
for the building stage.
From that point, a piece of wood is then book matched. This
is the process where one single cut of wood is sliced into
two pieces. This forms two identical pieces of wood, which
can then be used for the front or back of the guitar. That
explains why you have that line running down the back of
your guitar (it’s usually white). That line just covers up
the seam.
Now, onto the woods. Here are some of the neatest and
powerful woods out there:
Spruce - Spruce is an extremely strong wood, which is
important for building a guitar. It offers some very nice
crisp highs and a much more powerful volume. Great wood
choice. Used on the majority of guitars.
Cedar - Slightly more mellow than Spruce and has a very warm
feel to it. It has a beautiful glow and is aesthetically
pleasing.
Maple - A great all round wood that offers a good balance of
highs, mids and lows. This is something that many guitarists
desire for an all round good projection and clean sound.
However, because of this equal balance, it can also sound
quite flat for the acoustic world so it’s often used on
electrics. It is highly desired for it’s beautiful grain and
lusture.
Koa - Known for it’s high range, Koa is known for it’s solid
tone. It doesn’t have a good bass response but makes up for
it in the high end of the dynamic sound spectrum.
Mahogany - Great projection and nice treble. The flatpickers
dream when combined with the dreadnaught body type because
it offers such a great response and tone.
Brazilian Rosewood - This wood is probably the most wanted
piece of wood for guitars in the world. It’s becoming
increasingly rare as it’s becoming extinct, therefore
jacking up the price tremendously. It offers a huge bass
response with nice treble and mids. Unfortunately, most only
come on limited edition guitars that are at the top end of
the price spectrum.
Indian Rosewood - The more popular alternative to Brazilian
Rosewood and is far more accessible. Has virtually the same
tonal characteristics, just not as powerful. It’s used on
most professional guitars.
Cocobolo - My personal favorite! In my humble opinion, it
takes many characteristics from the above woods and combines
them to form a truly unique sound. It produces a great bass,
awesome volume and phenomenal overtones. This wood will most
likely be on my next acoustic. I suggest you do the same.
…Keep in mind that there are many, many more species of
tone woods available to you. There are also some great
subtypes of the above woods. For example, Taylor guitars use
Sitka Spruce on many of their models and limited edition
guitars. It’s in the family of spruce, but offers something
different.
In the end, the above comments are extremely subjective.
While I have played many of the woods mentioned above, my
ear likes things that your ear may not. The only way to find
out is to hunt them down and try them for yourself. Many
companies use the above woods listed, so it shouldn’t be
extremely difficult.
Eugene W is a professional guitar instructor and a full time
musician. Get access
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