HK Audio FINEO FO S112 F 1200 watt Install Sub Flyable Reflex 8 ohm (Black) - 12"The FO S112 F is the flyable version of the extremely compact FO S112 subwoofer. With its 12 woofer with 2. 5 voice coil and 50 Hz tuning frequency, it makes the ideal low end support with powerful bass and high sound pressure as a system subwoofer or surround LFE for installations with compact speakers like the FO 5. Installation is simple and secure with the optionally available U bracket or AP 8 attachment points. Four M8 threads on the side and