ATOTO CS-101SW 10 Ultra Slim Active Car Subwoofer, Under-Seat Powered Subwoofer? 10 Inch Low Profile Active Powered Subwoofer? ATOTO CS-101SW 10-inch Underseat Slim Amplified Subwoofer is a high-powered car subwoofer that offers 150 watts of RMS power and 400 watts of peak power. With a frequency response of 20Hz – 250Hz, this subwoofer can produce deep, rich bass tones. The Signal-to-Noise Ratio is >90dB for clear, distortion-free sound. Variable Low Pass Filter & Bass Boost? The Low Pass Filter is adjustable from 50Hz – 150Hz, allowing you to tailor the sound to your specific preferences. In addition, Variable Bass Boost (0 – 12dB) allows you to adjust the low bass within the boost range to just how you like it. Wired Remote & Phase Control? With its wired remote control, you can easily adjust input gain without leaving your seat to match the original vehicle system and ensure that all speakers complement each other. Phase control is adjustable between 0° and 180°, which means you can make the low-pitch sound more “in phase” with other speakers to produce louder bass. High & Low-level Inputs? The CS-101SW has both high and low-level inputs, so you can choose what works best. For most OEM and aftermarket head units with RCA outputs, it’s suitable to connect to low-level inputs. If your head unit doesn’t have RCA outputs, you can use high-level input connections. Connect the cables between the car audio subwoofer and your source unit, and you’re good to go. Space Saving Powered Subwoofer Car Audio? The under seat subwoofer with built in amp has the dimension 13.6″ (W) x 9.6″ (D) x 2.7 (H), providing more installation options, while its AI PT alloy voice cone offers enhanced sound quality. The fully covered mesh grille gives your speaker added protection, and Thermal, Overload, and Short Circuit Protection ensure reliable performance and prolonged lifespan. All ports and plugs are on one side.