Quantum Audio QW3000/12D4 12″ 4Ω Dual Voice Coil Subwoofer / 3000W New Each - Walmart.com
Amazon.com: Alphasonik 18" Flagship Series 3000 Watts Raw Sub Woofer Speaker Cast Aluminum Basket Driver for Pro Audio PA DJ Cabinets Subwoofer with High Handling Power Extremely Clear and Loud - FW1832 :