Amazon.com: Peavey PV 118 18 Inch Subwoofer : Musical Instruments
Amazon.com: Skar Audio SDR-18 D4 18" 1200 Watt Max Power Dual 4 Ohm Car Subwoofer : Electronics
Sundown Audio X-18 V.2 D4 18" 1500W RMS Dual 4-Ohm X V.2 Series Subwoofer
Amazon.com: Rockville RVW1800P8 1800w 18" Raw DJ Subwoofer 8 Ohm Sub Woofer 107OZ Magnet : Electronics
Amazon.com: CELESTION FTR184080FD FTR Series 18-Inch 1000-Watt Subwoofer, Black : Musical Instruments
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 :
Amazon.com: Skar Audio EVL-18 D4 18" 2500 Watt Max Power Dual 4 Ohm Car Subwoofer : Electronics
Amazon.com: Harmony Audio HA-ML182 Monolith 18" Car Stereo Competition SPL Sub 3500W Dual 2 Ohm Subwoofer : Electronics