Amazon.com: Massive Audio GTX122 – 12 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 12" Subwoofer 700 Watt RMS, 1400w MAX Dual 2 Ohm, 2.5 Inch Voice Coil. Sold Individually : Electronics
Subwoofer Specific, Massive Audio, GTX Subwoofer – Atrend USA
Amazon.com: Massive Audio GTX122 – 12 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 12" Subwoofer 700 Watt RMS, 1400w MAX Dual 2 Ohm, 2.5 Inch Voice Coil. Sold Individually : Electronics
Amazon.com: Massive Audio GTX104 – 10 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 10" Subwoofer 700 Watt RMS, 1400w MAX Dual 2 Ohm, 2.5 Inch Voice Coil. Sold Individually : Electronics
Massive GTX 122 Subwoofer in Plywood L Ported Box - BASS TEST - YouTube
Amazon.com: Massive Audio GTX154 – 15 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 15" Subwoofer 700 Watt RMS, 1400w MAX Dual 4 Ohm, 2.5 Inch Voice Coil. Sold Individually : Electronics
Car Subwoofer by Massive Audio GTX102 - Woofer with Amazing Sound for Truck, Cars, Jeep - 10 Inch Car Audio 1400 Watt GTX Series Dual 2 Ohm, 2.5 Inch Voice Coil. Sold Individually - Newegg.com
Massive Audio GTX 104 at Onlinecarstereo.com
Sound Box 2.1 Standard Way 11w Subwoofer + 2 Satellite Boxes-cxst11w - Speakers - AliExpress