Dieci car audio systems produce superior sound quality with minimal effort. Off-axis response and excellent mid-high-range sound are provided by the exclusive V-cone® profile. Reduced unwanted resonance even at high excursion is accomplished with the TPU (Thermoplastic polyurethane) surround. Extended high frequency range is supported by the high-performance materials such as the neodymium motor assembly and the PEI membrane. The passive filters with an extensive range of accessories that are extremely helpful in simplifying and speeding up the installation process.