Space between rings has more to do with the growing season. Harsh weather, early winter and amount of rain. You also might be comparing southern grown wood to northern grown. The Stradivarius violin might have better tone quality due to the years the wood was grown in. Called the little ice age. The wood has a tighter growth ring.HalVT said:I've noticed that older lumber has less space between the growth rings than newer. I wonder if fertilizers are being used to grow trees faster, resulting in more space between the rings, and more warping and twisting?