Audison APBMW K4M component speakers (100 mm) for BMW.

Audison APBMW K4M (Prima, OEM Integrator) 2-Way Component Speakers 4" (100 mm) for BMW.

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.