Crunch Crw12d4 12 Inch 800 Watt Max 4 Ohm Dual Voice Coil Car Subwoofer Speaker With 2 Channel 1000 Watt Amp A/b Class Car Audio Stereo Amplifier : Target
4Ω 4" Inch 40-100W Subwoofer Woofer High Power Long Stroke Speaker Loudspeaker | eBay
Nemesis Audio NA-8H v.3 8" Car Subwoofer 900 Watts DVC 4-OhmModel: NA- – Moon Car Stereo