Bluave M10S22 10" M Series High Power 600w Marine Subwoofer 2-Ohm with 10" Universal Marine Sub Box Enclosure for Cars, Trucks, Powersports, UTVs, Golf Carts, Boats - Creative Audio
TKO124 - 12" 300 Watts RMS Dual 4 Ohm Subwoofer
Fame Audio Challenger SUB 18A 18" Active-Subwoofer, 600W - Active Subwoofer | Reverb
6.5" Car Subwoofer 600W CADENCE US6D4 4 Ohm Dual 2" VC Ultra Shock Each | eBay