BOSS Audio Systems P156DVC Phantom Series 15 Inch Car Audio Subwoofer – 2500 Watts Max, Dual 4 Ohm Voice Coil, Sold Individually, For Truck Boxes and Enclosures, Hook Up To Amplifier
Sundown Audio Zv6 15" inch DVC Dual 2 Ohm (Z Series) Car Subwoofer 2500 Watts RMS
Test Bench: The SB42FHCL75-6 15” Subwoofer from SB Acoustics | audioXpress
6 15S TEARING UP THIS VEHICLE! CRAZY SUB FLEX!!! - YouTube