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Amazon.com: Massive Audio HIPPOXL64 – 6 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 6" Subwoofer 300 Watt RMS, 600w MAX Dual 4 Ohm, 2 Inch Voice Coil. Sold Individually : Electronics
6.5 Inch 6" 4 Ohm 100w V-shaped Red Funnel Cone Thick Rubber Edge Car Audio Modified High Power Subwoofer Auto Home Bass Speaker - Speakers - AliExpress
DS18 ZXI6.4D High Excursion 6.5" Car Audio Subwoofer 600W Watts DVC 4-Ohm Quad Stacked Magnets
Amazon.com: DS18 ZR6.4D Elite-Z 6 Inch Car Audio Subwoofer 600W Watts Dual Voice Coil 4-Ohm DVC 4+4 Ohm (1 Speaker) : Video Games
XTC TNT06 Boombox 6" Subwoofer - My Audio & Security