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Amazon.com: Alpine X-W10D4 Car Audio Type X Series Sub 1800W Peak 10" Subwoofer Bundle with Harmony HA-A800.1 Amplifier & Amp Kit : Electronics
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Amazon.com: Alpine S-W12D2 12" 1800 Watt Dual 2-Ohm Car Subwoofer+Mono Amplifier+Amp Kit : Electronics
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Amazon.com: Alpine KTA-200M Mono Power Pack Amp SWT-S10 10" Loaded Tube Subwoofer and Bass Knob : Electronics
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