A bass tube is just another type of cabinet for a woofer, only easier to build. A product called Sonotube, which contractors use to pour cylindrical concrete columns, is the ideal building material for a bass tube. To finish the end of a tube, circles cut from 3/4-inch plywood work great, are easy to machine and provide strength. If deep bass in a minimum space is your goal, this single-woofer tube design yields very low, articulate bass. Writer Bio
