Amazon.com: Pyle 8-Inch Low-Profile Amplified Subwoofer System - 600 Watt Compact Enclosed Active Underseat Car Audio Subwoofer with Built in Amp, Powered Car Subwoofer w/Low & High Level Inputs PLBX8A : Electronics
Amazon.com: Alpine BassLine Series 12 Inch 750 Watt 4-Ohm Car Audio Subwoofer, Pair | W12S4 : Electronics
Amazon.com: Alpine SPR-60C 6.5" Car Audio Component System (Pair) : Electronics
Amazon.com: BOSS Audio Systems BASS10 Amplified Car Subwoofer - Low Profile, 10 Inch Subwoofer, Remote Subwoofer Control, for Vehicles Needing Bass with Limited Space, Remote Subwoofer Control : Electronics
Amazon.com: Alpine Sps-510 5.25-Inch 2 Way Pair of Car Speakers : Electronics