Amazon.com: Massive Audio SUMMOXL104-10 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 10" Subwoofer 1500 Watt RMS, 3000w MAX Dual 4 Ohm, 3 Inch Voice Coil. Sold Individually : Electronics
Amazon.com: Rockville (2) RVW1500P8 3000w 15" Raw DJ Subwoofers 8 Ohm Subs 70OZ Magnet : Musical Instruments