Both the acoustic guitar and the classical guitar are 6 strings acoustic guitars. The music the can produce is created without electrical power. It must be mentioned that the acoustic guitar have an acoustic/electric version, but the Spanish guitar is always completely acoustic. Differences between these types of guitar lie on the strings, frets and wood type.
The acoustic guitar is also known as folk guitar, and it’s used to play folk, blues, rock and country music. Its metal strings produce a rich, high sound. It is habitually played with a pick to prevent the metal strings from injuring the player’s fingertips. Because of the acoustic guitar’s slim neck, it is much easier to play it with a pick.
Spanish or classical guitar
The Spanish guitar has nylon strings and a wider neck, which allows scratching the strings with the fingers. Nylon strings produce a soft and slightly faded sound. The guitar design makes it easy to play complex melodies as jazz, flamenco, classic baroque pieces and classic Spanish music. Classical guitar is stands out for its vast right-hand technique, which allows playing music melodies that couldn’t have been created with an acoustic guitar.
Neck and strings
The acoustic/folk guitar has a slimmer neck than the Spanish guitar, its frets are closer together, the strings are tighter, and has a bigger body or resonance chamber. The acoustic guitar has 14 frets and the Spanish guitar has only 12. All 6 strings of the acoustic guitar are made of metal and recovered with bronze. According to The Classical Guitarist, the 6 strings of the classical guitar are divided in 3 acute (high) strings made of nylon, and 3 grave (low) strings made of nylon with a bronze or silver covering. The Spanish guitar is generally the easiest guitar to play.
The classical guitar and the acoustic guitar also have wood differences, which generates their distinctive sounds. The acoustic guitar is generally made of spruce, although the Brazilian jacaranda is preferred because of the better acoustic they produce. The classical guitar is made of cedar or mahogany wood. Both guitars are manufactured with light and resistant wood, which elevates the vibration of the resonance chamber. Frets are sometimes made of ebony or jacaranda.