Amazon.com: WLLDSE 15 inch 2400 Watt Peak Momentary Power Dual 2 Ohm Car Subwoofer, Black : Electronics
PLAN]18" FLAT 15Hz Subwoofer Modified Cinema SUB - YouTube
Hertz SX 380D SPL Show 15" Dual 2 Ohm Component Subwoofer (Each) — Safe and Sound HQ
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