Boss Audio BASS600 8-Inch Low-Profile Amplified Subwoofer (Single)

The Perfect Amplified Sub
Amplified subwoofer systems make it easy to get great bass. These enclosures are precision designed and matched to the subwoofer for optimum bass response. Add a powerful built-in amplifier and you have a simple solution for adding booming lows to your system. And with a profile of under 3 inches, this unit will slide right under your seat.