The Hertz DBA 201 F is a flat active subwoofer from the Dieci series, designed to add deep bass to your vehicle without sacrificing significant trunk space. Its sealed enclosure was optimized using FEM simulation to maintain a super flat profile, measuring 345×245×79 mm, which allows it to fit into tight spots where a traditional box would be too bulky. Inside, a built-in Class D amplifier utilizing He-Li technology delivers 220 W RMS and 440 W peak power. You can fine-tune the sound to your preference using the variable low-pass filter between 50 and 150 Hz, an adjustable bass boost from 0 to 6 dB at 45Hz, and a phase inverter. To protect the 200 mm driver from overly low frequencies, it includes a subsonic filter set at 15 Hz. Installation is straightforward thanks to the Plug & Play Molex harness and support for both linear RCA and high-level speaker inputs, making it compatible with factory systems via the Universal Speaker System feature. The unit operates on a voltage range of 6.5V to 18V, ensuring it works well in electric vehicles. For convenience, the included HRC 01 wired remote lets you adjust the level from -15 dB to 0 dB from your seat, while the system turns on automatically when it detects an input signal.