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DS18 IXS10.4D 10" Shallow Mount Subwoofer 1000W DVC 4-Ohm Slim Thin Car Sub Bass 810005184250 | eBay
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8" RI Audio Subwoofer 1000W Peak Power Dual 4 Ohm Energy Series Single Car Audio | eBay
2) 8" RI Audio Subwoofer 1000W Peak Power Dual 4 Ohm Energy Series Ca – Pricedrightsales
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Amazon.com: Planet Audio P10AW Amplified Car Subwoofer - 1000 Watts, Low Profile, 10 Inch Subwoofer, Remote Subwoofer Control, Great for Vehicles That Need Bass But Have Limited Space : Electronics