DD Audio VO-M6.5aThe VO M6. 5 is a PA style, shallow mount midrange designed for enthusiasts who want sound quality and high output. By combining design elements from pro audio and high end car audio DD has developed a new type of highly efficient driver aimed at delivering high levels of clean output from stock speaker locations. The VO mids feature performance refinements like vented back plate motors, long fiber cone stock, and curvilinear cone bodies resulting in