Amazon.com: B52CarAudio ETR-1040 Element Transit CAR SUBWOOFER 400 Watts 10 Inch : Electronics
CT Sounds MESO-8-D4 1600 Watt Max Power 8 Inch Car Subwoofer – Dual 4 Ohm – ASA College: Florida
Amazon.com: American Bass HD Series Subwoofer Dual 4 Ohm Voice Coil, 800W AB-HD-8-D4 : Electronics
4X Harmony HA-P15LS16 Replacement 15" Pro PA 1000W Subwoofer - Speaker 16 Ohm : Musical Instruments - Amazon.com
Harmony Audio 2X HA-C154 Car Competition 15" Sub 2800W Dual 4 Ohm Subwoofer New : Electronics - Amazon.com
Amazon.com: 2 x American Bass 12" HD Series 8000W Dual 2 Ohm Subwoofer AB-HD-12D2-V2 : Electronics
Amazon.com: 2X Soundxtreme ST-1052 10 Inch 2200 Watts Max Power for Pair Elite Car Audio Stereo Subwoofer Dual 4 Ohm Voice Coil Configuration Competition 10" Subs Speaker System : Electronics
2x Celestion FTR18-4080FD 18" Weather-Resistant Subwoofer 2000W Sub Woofer 8-Ohm