B&C 15SW115 is a lightweight very high power 15" woofer for speaker subwoofer systems with a 4.5 inch split winding voice coil. B&C 15SW115 Speakers - B&C 15" 15SW115 high power speaker
4x B&C 15SW115-8 15" Professional Neodymium Replacement Subwoofer 3400W 8Ohm Sub 848864009711 | eBay
B&C 15SW115-4 15" Professional Neodymium Replacement Subwoofer 3400W 4-Ohm Sub
B&C Recone Kit for B&C 15SW115 - 4 Ohm Low Frequency Driver