Amazon.com: Goldwood Sound GW-8PC-8 Heavy Duty 8ohm 8" Woofer 330 Watts Replacement Speaker, Black : Musical Instruments
Amazon.com: Focal SUB P25 10" 200W RMS 400W Max Single 4-Ohm Subwoofer : Electronics
Amazon.com: Pyramid 12 Inch Car Subwoofer Speaker - 500 Watt High Powered Car Audio Sound Component Speaker System w/ 1.5 Inch Kapton Bobbin Voice Coil, 8 Ohm, 25 oz Magnet, Cloth Edge
Amazon.com: Gladen Sqx 10 25 Cm Subwoofer : Electronics
Amazon.com: Seismic Audio - SA-PGCE10LED - Dual 10 Inch 1000 Watt Car Audio Subwoofer Box with LED Lights & Plexiglass Window : Electronics
Amazon.com: Clarion WF2520D 1000 Watts Maximum Power Handling 10" Dual 4Ohm Voice Coil Shallow-Mount Car Audio Subwoofer with (One) Gravity Magnet Phone Holder Bundle : Electronics
Amazon.com: Facmogu 2PCS 8in Full Range Audio Speakers, RMS 50W Peak 120W, 4 Ohm Car Vehicle Audio Full Range Drivers, Wide Range DIY Loudspeaker Woofer Replacement - Red : Electronics
Amazon.com: Pyle 6.5 Inch Mid Bass Woofer Sound Speaker System - Pro Loud Range Audio 300 Watt Peak Power w/ 4 Ohm Impedance and 60-20KHz Frequency Response for Car Component Stereo PLG64,Yellow : Electronics