Amazon.com: 5 CORE 8 Inch Car Subwoofer Paper Cone, Black, Voice Coil 4 Ohm Impedance, 1000 Watt Power Audio Speakers, Vehicle Audio Full Range Drivers, Loudspeaker Woofer Replacement : Electronics
Ground Zero GZNW 38NEO-SPL - 38 cm Subwoofer : Amazon.de: Electronics & Photo
1 Subwoofer SP Audio SP-15CC SP15CC 38 cm 380 mm 15 Inch Diameter Dual Voice Coil 2+2 Ohm 1000 Watt RMS 2000 Watt Max Car, Pack of 1 : Amazon.de: Electronics & Photo
Ground Zero GZTW 38T 38 cm Subwoofer, 500 WRMS: Amazon.de: Electronics & Photo