Acoustic Guitars

An acoustic guitar is a guitar that uses only acoustic methods to project the sound produced by its strings.

In all types of guitars the sound is produced by the vibrations of the strings. In an acoustic guitar the volume of the sound is increased by using a soundboard and a sound box.

The body of the acoustic guitar is hollow. The vibrating strings drive the soundboard through the bridge, making it vibrate. The soundboard has a larger surface area and thus displaces a larger volume of air, producing a much louder sound than the strings alone. 

The sound box provides both a support for the sound board and a resonant cavity and reflector for the sound waves produced on the back face of the soundboard.