Amazon.com: Harmony Audio HA-R104 Car Stereo Rhythm Series 10" Sub 500W Single 4 Ohm Subwoofer : Electronics
Amazon.com: Focal Pair of SUB P30 12" 250W RMS 500W Max Single 4-Ohm Subwoofer : Electronics
Dropship 5 CORE 18 Inch Subwoofer Speaker 850W Peak High Power Handling 500W RMS 18" Replacement 8 Ohm Pro Audio DJ Sub Woofer - FR 18 190 AL to Sell Online at a Lower Price | Doba
Amazon.com: Focal SUB P30 12" 250W RMS 500W Max Single 4-Ohm Car Subwoofer : Electronics
500W RMS, 1000W MAX 2-Ohm Impedance 12 Inch / 250mm Subwoofer - DES122 - Diamond Audio
Dropship 5 CORE 18 Inch Subwoofer Speaker 850W Peak High Power Handling 500W RMS 18" Replacement 8 Ohm Pro Audio DJ Sub Woofer - FR 18 190 AL to Sell Online at a Lower Price | Doba