Humidity and Your Musical Instruments
Most fine instruments are made of wood because of its exceptional acoustical properties. Guitars, pianos, mandolins, violins, etc. are very susceptible to dry conditions. When wood dries out it tends to shrink. Shrinkage causes damage to your musical investment, such as broken joints and seams, or even cracks in the wood. This results in tone or intonation issues, and potentially hundreds of dollars in repairs. To avoid any negative impact, experts report a level in the neighborhood of 40% and 50% is best. This is ideal, since humans prefer this range, also!