Alpine PWE S8 Auto Amplified Subwoofer, 8 Inches, 240W, Black/White

20 Cm Active Subwoofer. Pressed In Die Cast Housing. It Can Significantly Improve The Sound System In The Vehicle. Variable Low Pass Filter Between 50 Hz And 100 Hz. Included Components: Compact Powered 8" Subwoofer (1) Input/Power Wire Harness (1) 15 Amp Ato Fuses (2) Remote Bass Level Knob (1)