Committed to creating a superior dynamic sound experience, F series subwoofer drivers were conceived to offer high definition bass without compromise. Each driver uses the same core driver principles used in our F Series high end car audio component systems and complements the systems balanced mids and highs with accurate powerful bass that can be felt as well as heard. F Series Subwoofers have two different models; F10S a 10�?subwoofer driver with a 50mm voice coil; F12S a 12�?subwoofer driver with a 60m voice coil. Each features ceramic / Kevlar fiber filled paper based cones that enhanced cone rigidity and reduce weight while making the cones moisture proof. Each driver is built to withstand the harshest environment while maintaining consistent high quality sound output. Each subwoofer offers the very latest in electro acoustic engineering and provides superior clean sounding bass. Special NBR rubber surrounds, high power kaptop EISVW voice coils, and a long stroke linear design. All this complemented by a high performance magnetic system gives a high end subwoofer driver that can provide high definition dynamic bass with minimal distortion.