Massive Audio BAS8 is a 8" powered subwoofer that delivers 400W RMS/800W peak power. It features a variable crossover control from 50Hz to 200Hz with a 12dB/octave Butterworth filter, allowing you to tailor the bass response to your liking. Additionally, the adjustable bass boost from 0 to +12dB at 45Hz lets you enhance the low end even further. The BAS8 boasts a frequency response of 25Hz to 200Hz, ensuring deep and impactful bass. With its auto turn-on and auto hi-low features, it seamlessly integrates into your car audio system.