Rockford Fosgate P3D4-12 Punch P3 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Amazon.com: Massive Audio SUMMOXL104-10 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 10" Subwoofer 1500 Watt RMS, 3000w MAX Dual 4 Ohm, 3 Inch Voice Coil. Sold Individually : Electronics
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Amazon.com: DS18 SLC-MD12 Car Subwoofer 12" 1000 Watts MAX Power Single Voice Coil 4 Ohms. Easy Mounting. Loud Bass for Vehicle Stereo Sound System - 1 Speaker : Electronics
MD Sound Subwoofer for Sale in Lansdale, PA - OfferUp
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Subwoofers Md Sound 12 Pulgadas | MercadoLibre 📦
Black Diamond 10" 440 Watts 4 Ohm Single Voice Coil Subwoofer DIA-10S
Dayton Audio MX12-22 12" Max-X High Excursion DVC Subwoofer 2 Ohms Per Coil