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Amazon.com: AudioPipe TXX-BDC4-12D 12 Inch 2,200 Watt High Performance Powerful Dual 2 Ohm DVC Vehicle Car Audio Subwoofer Speaker System, Black : Electronics
Amazon.com: Harmony Audio HA-ML151 Monolith 15" Car Stereo Competition SPL Sub 3200W Dual 1 Ohm Subwoofer : Electronics
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