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Kicker 45KMF104 10" 4-ohm marine subwoofer — designed for free-air applications at Crutchfield
High-Powered Free Air Subwoofer - Infinite Baffle (IB) Sub Sound Drive Unit, Recommended for 'Open Air' and Sealed Enclosure Speaker, Power Handling: 400 Watt PEAK / 200 Watt RMS - Lanzar DCTOA154 : Amazon.sg: Electronics
Kicker 48CWRT82 CompRT Series shallow-mount 8" subwoofer with dual 2-ohm voice coils at Crutchfield
