The VO-M8 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 a smooth extended frequency range. The low moving mass design coupled with tight motor tolerance produces ultra fast transients and high output to keep up with any subwoofer system. The VO-M8 speakers can replace the factory OEM deck and door speakers transforming a system to concert level without cutting up interior panels, and if you really want to get crazy outdoor PA type systems are a simple array away. The VO-M Series is marine treated for use in boats, motorcycles, powersport vehicles, and PA systems.