Planet Audio AC15D Anarchy 15" Subwoofer Dual 4 Ohm Voz Bobina Negro Poli Inj | eBay
Planet Audio BBD12B Big Bang Series 12 Inch Car Audio Subwoofer - 2500 Watts Max, Dual 4 Ohm Voice Coil, Sold Individually, For Truck Boxes and Enclosures, Hook Up To Amplifier - Walmart.com