"Bestop Soundbars positions a pair of high-quality, Cuspid speakers directly behind your head. These speakers deliver a truly mesmerizing sonic experience when coupled with Bestop SpiralPort technology. It's a difference you have to hear to believe. The outer casing is constructed of tough polyethylene for durability and weather resistance and underneath, a dome light illuminates your interior. The Super Soundbar adjusts to three preset angles: level for normal use, forward 30? or flipped back 90? while the Soundbar remain fixed to one position after installation. Bestop Soundbars mount to any 2.5" sport bar and fits under hardtops, soft tops and ."

(taken from the Bestop Website: www.bestop.com)