American Bass HD12D2 HD 12" 3000w Competition Car Subwoofer 300Oz Magnet, 3" VC - 12" Subs - Subs (No Enclosure) - Subwoofers and Enclosures - Car Audio and Video | Audio Savings
Source 760 oz huge magnet motor sub woofer with 5" flat aluminum coil 5000w rms competition subwoofer spl 18 inch on m.alibaba.com
Goldwood Pro 15 in. Woofer 50 oz. Magnet 300-Watt Replacement Speaker GW-1558 - The Home Depot
American Bass XO 10" Subwoofer Dual 4 Ohm Voice Coil, 300 Watts RMS/600 Watts Max, 90 oz Magnet
Goldwood Pro 15 in. Woofer 50 oz. Magnet 300-Watt Replacement Speaker GW-1558 - The Home Depot
Increased SUBWOOFER Power 15% By CHARGING Motor Magnets | How To MAKE Old Subs LOUDER! - YouTube
DS18 GEN-XX10.4DHE X 10" High Excursion Car Subwoofer 1400 Watts Dvc 4-Ohm Double Magnet
Rockville RVW1500P8 1500w 15" Raw DJ Subwoofer 8 Ohm Sub Woofer 70OZ Magnet
Dual Magnet 12' Car Audio Subwoofer - China Car Subwoofer, Car Audio Subwoofer | Made-in-China.com
Pyle 8 Inch 1600w Dvc 4 Ohm Car Audio Subwoofer Speaker Set With 40 Oz Magnet And 1.5 Inch 4 Layer Voice Coil, Black (2 Pack) : Target
STLF-1804-8 | 18" 450W Raw Woofer Replacement Speaker, 4" Voice Coil, 8-ohm – Sound Town