Equipped with the Flax cone, the woofers from the PS 165 FSE kit provide a very dynamic, natural sound without coloration. The TMD (Tuned Mass Damper) surround they incorporate stabilizes the surround for better control, as well as greater neutrality and linearity. Thanks to their built-in neodymium motor, their depth has been reduced (thin, shallow basket profile): this more compact design makes them even easier to install in factory locations.