MESO-8 - 1600 Watt 8 Inch Car Subwoofer - CT Sounds – CT SOUNDS
DS18 EXL-XX15.2DHE High Excursion 15" Subwoofer 4000 Watts Max 2-Ohms DVC audio subwoofers
Amazon.com: BESTISAN Powered Subwoofer, 6.5" Active Home Audio Subwoofer in Compact Design,LFE & Stereo Line Inputs & Audio Output, Built-in Amplifier for Home Theater/Receiver/TV/Speakers, Black, SW65D : Everything Else
Amazon.com: Pyle Car Subwoofer Audio Speaker - 8in Non-Pressed Paper Cone, Black Plastic Basket, Dual Voice Coil 4 Ohm Impedance, 800 Watt Power and Foam Surround for Vehicle Stereo Sound System -