The 8 (200mm) woofer in the BassPro SL2 is designed specifically to provide low distortion and great bass performance in an ABS enclosure with a remarkably compact footprint. Efficient Class D amplifier. The amp that powers the BassPro SL produces minimal heat, and it doesn’t require a lot of current from the car’s electrical system. The BassPro SL employs high-pass filters and limiters that deliver exceptional at-the-limits performance. A manual crossover control (50Hz – 120Hz) lets you adjust how much upper bass and mid-bass the BassPro SL produces. Fine-tune the crossover to achieve a smooth transition from the BassPro SL to the rest of the system’s speakers. Level control adjusts the BassPro SL2’s volume to the other speakers in your system, while Bass Boost control lets you minimize peaks or dips in bass frequencies in your car’s acoustic environment. Line- and high-level inputs. For added installation flexibility, the BassPro SL features both line- and high-level inputs. If you use the high-level inputs to connect the BassPro SL to the head unit, an input load switch lets you switch from “Low” to “High” to achieve optimum results. Wired, remote level control capability. Amplifier Power (RMS) 125W. Frequency Response 35 Hz – 120 Hz. Crossover Frequency/Slope 12 dB/octave. Input Sensitivity 0.2V – 2V Line-Level Input; 2V – 20V High-Level Input. Dimensions (H x W x D – Metric, English) 13-9/16″ x 9-7/8″ x 2-13/16 (344mm x 250mm x 71mm).