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
BOSS Audio CXX8 Chaos Exxtreme 600 Watt Subwoofer - Walmart.com
PYLE 6" 600W Max Dual Voice Coil 4-Ohm Car Stereo Audio Subwoofer (12 Pack) 12 x PLPW6D - The Home Depot
BOSS Audio Systems CXX8 Chaos Exxtreme Series 8 Inch Car Audio Subwoofer - 600 Watts Max, Single 4 Ohm Voice Coil, Sold Individually, For Truck, Boxes and Enclosures, Use With Amplifier
Active 12 Inch 600 Watt Car Audio Subwoofer Tube Speaker and Amp Cable Package | eBay