APBMW K4E -KIT 2Way TW+MID+ACC for BMW LargeBasket The two-way APBMW K4E kit creates a three-dimensional sound stage and give the musical message the essential timbre accuracy. The 100 mm (4″) midrange is provided with a water-repellent pressed-paper cone, a material providing natural sound. It features a low resonance frequency that allows hi-pass cut-off in the 150-200 Hz range for an excellent mid-low reproduction. The 25 mm coil and Tetolon dome tweeter features a great extension on both medium and high frequencies and is optimized for off-axis output, for an extended sound stage in the three dimensions, that amplifies the perception of reality in the car cabin. Features - Specially developed for the upgrade of BMW-Mini featuring factory 2 way systems, to create an extended sound stage in the three dimensions, amplifying the perception of reality in the car cabin; Neodymium Magnetic group to maximize performance while minimizing bulk and weight; 25 mm (1") fiberglass woofer voice coil for high power dissipation and stiffness; Waterproof pressed-paper cone for medium natural frequencies free from any plastic resonance; BMW-Mini compatible aluminium die-cast basket with Plug & Play connectors; 25 mm Tetolon coil tweeter with dispersion characteristics optimized with FEM simulations; Tweeter support supplied for Plug&Play OEM placements; 30 cm extension provided featuring Plug & Play connectors, for high flexibility of installation; Damping removable motor cover; Crossover equipped with high quality components and Plug&Play connections.