Hertz Dieci series car audio speaker systems let you realize a high-quality audio system with the utmost in simplicity. The woofers employ the exclusive V-cone® profile for amazing off-axis response and detailed mid-high range. The TPU (Thermoplastic polyurethane) surround ensures linearity and reduction of unwanted resonance, even at high excursion. High-performance materials, such as the neodymium motor assembly and the PEI membrane, ensure an extended high-frequency range. The passive filters are found directly on the supplied connection cables, along with a rich array of accessories increasing the install-friendliness and installation time.