1caja de resonancia femenino
- The instrument typically consists of a set of 12 strings and a soundbox.
- The addition of the forepillar to the soundbox and string-arm greatly strengthened the instrument's structure, allowing the use of greater string tension and stiffer string materials.
- Unlike modern harps, the soundbox would have be hollowed out from a single piece of wood and finished with a thin panel to ‘seal’ the sound box.
- Originally, the soundbox of the charango was made from the shell of an armadillo, which gave it a unique sound and appearance.
- The double psaltery had two ranks of strings, one on either side of the soundbox.