The Hertz Audio X 165 is a 6.5 inch two-way coaxial speaker designed as a factory replacement for vehicles requiring DIN size baskets. It uses a pressed-paper cone treated with a water-repellent finish and a foam surround to deliver extended low-frequency response and high sound pressure levels even when driven by OEM head units.

Build features include a special tweeter faceplate optimized for exceptional off-axis performance, a 25 mm voice coil driven by a high-flux density ferrite magnet for dynamic power handling, and a DIN size basket finished with abrasion-resistant dust paint for straightforward installation in compatible factory openings.