BOSS AUDIO SYSTEMS Phantom 12 in. 2300-Watt Max Power Car Audio Subwoofer with DVC Power (6-Pack) 6 x P126DVC - The Home Depot
Amazon.com: Lanzar 6.5” Car Subwoofer Speaker - Black Non-Pressed Paper Cone, Aluminum Voice Coil, 4 Ohm Impedance, 600 Watt Power and Foam Edge Suspension for Vehicle Audio Stereo Sound System - MAXP64 : Electronics