EXL XX 12" High Excursion Subwoofer 2000 Watts Rms DVC 2-Ohm
M Series 12" Subwoofer
Amazon.com: Dual Dls12 Woofer - 175 W Rms - 28 Hz To 125 Hz - 4 Ohm : Electronics
Amazon.com: Pyle 12' Car Audio Speaker Subwoofer - 1600 Watt High Power Bass Surround Sound Stereo Subwoofer Speaker System - Non Press Paper Cone, 90 dB, 40 Ohm, 60 oz Magnet, 2