GTX154 - 15" 700w Dual 4 Ohm GTX Series Subwoofer by Massive Audio® - SSA® Online Store
Amazon.com: Massive Audio GTX64 – 6.5 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 6.5" Subwoofer 250 Watt RMS, 500w MAX Dual 4 Ohm, 1.5 Inch Voice Coil. Sold Individually : Electronics
Massive Audio 12" 1400W MAX Subwoofer Dual Voice Coil 4 Ohm Car Audio GTX124 | Franklin Retirement Solutions
Massive Audio GTX154 Product Preview - YouTube
Amazon.com: Gravity 2X 8 Inch 1000 Watt Car Audio Subwoofer w/ 4 Ohm DVC Power 8' Sub Pair - Feature Dual Voice Coil, Thick Magnet, Design for Car, ATV, Van, High Performance
Massive Audio GTX 154 1400 Watts 15" Dual 4 Ohm Car Audio Subwoofer New | eBay