Planet Audio Z10 - Subwoofer dual, 25 cm, 350 W RMS : Amazon.es: Electrónica
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