JMC Soundboard, User Manual, Page: 18 / 24

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Where is the resonance chamber?
One can in fact see the all piece as a resonance chamber, and the Soundboard plays the role of a vibrating
membrane. Despite what one reads on the topic of resonance chambers which are said to amplify
sounds, they in fact mostly serve to enable listeners to hear all the frequencies emitted by the soundboard
by reducing the acoustic short-circuit inherent to the moment when a membrane begins to vibrate.
Moreover, the materials from which they are made have a strong influence on its timbre, which is a bad
thing as far as the Soundboard is concerned,
which is why it has been reduced to a totally
muffled cover.
Are all Soundboards identical?
They are made in the same way, but they are
nonetheless all a little different in that they
are built from a living material, spruce. Like
all musical instruments, they will evolve in
their own particular way, depending on where
they are installed, the music they play and the
people for whom they play.