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Amazon.com: Harmony Audio HA-A800.1 Car Stereo Class D Amp Mono 1600W Sub Amp, 43C124 12" Comp C12 Series 150W RMS 4 Ohm Sub and 212VH Car Audio Dual 12" Vented Stereo Sub
Al Omari Car Audio Sound SPL Bass Competition System - Have you ever seen such an amazing sound system !! Damn they are on the roof !! The first ever subwoofer box
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Audio Systems | Shades of Competition - Car and Truck Customization and Accessories in Anchorage, Alaska
VFL Comp Signature Series 15" SPL Competition Subwoofer, 5000 Watts RMS, 10000 Watts Max, Dual Voice Coil
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