Cento systems designed for accurate music reproduction is Ideal for in-car installation, these are made of high-strength ABS and metal mesh, which offer excellent protection within a compact size. Time was spent experimenting with different materials in order to find the perfect materials for the woofer cones, as the SPP-M material (Semi Pressed Paper-Mica) was chosen, which preserves the natural sound of the semi-pressed paper while also improving rigidity with Mica powder. integrated two-way systems Cento CK 165 includes the new C 26 tweeter, which is equipped with a 26 mm (1 in.) Tetolon dome and a 20 mm (0.8 in.) voice coil to reproduce medium-high frequencies with accuracy and nuance.