Kenwood KSC-PSW7EQ Active Compact Underseat SubwooferCompact Design Allows for installation almost anywhere, including tight spaces such as under a seat or panel. New Diaphragm Speaker The KSC PSW7EQ is equipped with a micro step shape on the long edge of the diaphragm surrounding the diaphragm. This suppresses the unwanted movement of the diaphragm, which vibrates like a seesaw in the longitudinal direction during operation, thereby supporting accurate vibration and reproducing accurate bass sound to