PowerBass XL-1250 12-Speaker, 500-Watt, Power Sports Sound Bar The XL Series Soundbar circuit board has been conformal coated with a layer of transparent material that protects the parts against moisture, dust and temperature extremes. The Version 2 series soundbars are the evolution of soundbar technology with advancements made in power and performance. Delivering the fullest sound possible in a self contained system for use in the hard off-road environment. Feel the bass as all of the new XL Series Soundbars are equipped with 4" marine grade poly cone subwoofers the only of its kind!