Ground Zero Radioactive SQ lineup is designed and produced for one goal only. Best possible sound quality in the price class. Designed using Klippel optimization with all drivers. These speakers work exceptionally well in typical OEM locations. Midrange has composite cast frame and neodymium magnet and shallow mounting depth to ease installation. Available as 2-way and 3-way separates and separate tweeters, midranges and woofers.