Ground Zero GZIW 300X-II 35Owatt rms Subwoofer. Powerful enough to compete 500rms Contact: 9810020606 #groundzero #groundzeroaudio #groundzerogermany... | By Auto Music Emporium | Facebook
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12" 30cm Ground Zero GZIW300 GZIW 300 Subwoofer Test X Max 120 to 20Hz at Mac Audio Z2100 amplifier - YouTube
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