JBL Basspro SL 8-Inch Enclosed Active Underseat Car Stereo Subwoofer System - Black

The 8" woofer is designed specifically to provide low distortion and great bass performance in an ABS enclosure 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 A manual crossover control (50Hz - 120Hz) lets you adjust how much upper bass and mid-bass the BassPro SL produces Level control adjusts the BassPro SL's volume to the other speakers in your system Compatible with the JBL GTO-RBC (sold separately), which enables you to control the level remotely