Dayton Audio MX15-22 15" Max-X High Excursion DVC Subwoofer 2 Ohms Per Coil
4XL-151D 15" Subwoofer
Amazon.com: Skar Audio EVL-15 D2 15" 2500 Watt Max Power Dual 2 Ohm Car Subwoofer : Electronics
Avatar STU-1546 D2 - 15" Subwoofer - Tsunami Series – Droppin HZ Car Audio
Alphasonik 15" Flagship Series 1400 Watts Raw Sub Woofer Speaker Cast Aluminum Basket Driver for Pro Audio PA DJ Cabinets Subwoofer with High Handling Power Extremely Clear and Loud - FW1532 Price:
Amazon.com: Gravity Warzone 15 Inch 3500 Watt Car Audio Subwoofer w/ 4 Ohm DVC Power (Single) : Electronics
Amazon.com: Gravity Car Vehicle Subwoofer Audio Speaker - 15 Inch Competition Grade Pressed Paper Cone, 2 Ohm DVC, Advanced Air Flow, 4800W Power for Stereo Sound System Warzone G715D2 (1 Subwoofer) : Electronics