Sound Town Mode Audio Series 24-Inch 3000 Watts Subwoofer with Italian Neodymium LF Driver, Folded Horn Design, Baltic Birch Plywood, Black (ULM-24) - Newegg.com
Turbosound iQ18B 3000 Watt 18'' Powered Subwoofer with KLARK TEKNIK DSP Technology, Speaker Modelling and ULTRANET
Turbosound iQ18B 3000 Watt 18'' Powered Subwoofer with KLARK TEKNIK DSP Technology, Speaker Modelling and ULTRANET Networking
18 Inch Car Subwoofer 3000 Watt AES 1.8+1.8 Ohm 4" Voice Coil Transducer | eBay
2) JBL PRX815W 15" 3000 Watt Powered Active Speakers w/ Wi-Fi+18" Subwoofer Sub - Rockville Audio