The cpx 690 three-way car audio coaxial is the best solution for enthusiasts who love highly dynamic listening with low and attractive frequencies and want to make the most of tailgate mounting; tweeter and supertweeter feature neodymium magnet and tetolon dome, 32mm and 24mm respectively; the sleek faceplate is designed to maximize emissions off-axis ions and thus optimize horizontal installation; as for the cpx 165, the tweeter and supertweeter of the cpx 690 features radial ventilation system technology for excellent acoustic and cooling performance; the robust basket with radial ventilation keeps operating temperatures low; the supplied grille is made of a high-strength ABS plastic support and metal mesh to ensure a high level of protection with a high-tech design.