Rockford Fosgate P300-8P

8" Amplified Subwoofer Enclosure Built-in 300 watt Amplifier Vented Enclosure Power Handling: 300 watts Frequency Response: 30Hz - 200Hz Separate Low Level and Speaker Level Inputs Built-in Adjustable Bass Boost EQ Built-in 0°/180° Phase Switch Adjustable 12dB/Octave Low-Pass Crossover - Variable 50Hz - 200Hz Auto Turn on/off Function Thermal and Over/Under Voltage Protection Includes Remote Level Bass Controller Dimensions: 11.4" (289mm) H x 17.6" (448mm) W x 5.6" (141mm) D1 x 4.8" (122mm) D2 1-Year Dynamic Autosound Warranty