Amazon.com: PyleUsa Single Voice Coil Car Subwoofer - 8 Inches, 200 Watts at 4-Ohm Car Audio Powered Subwoofer, Injection Cone with Rubber Edge, High-Powered Car Subwoofer, Audio - PLMW83 Black : Electronics
Oaktron 10” (254 mm) Work-Horse 8 Ohm Woofer
Goldwood Heavy Duty 8 in. Woofer 330-Watt 4 ohm Replacement Speaker GW-8PC-4 - The Home Depot
Dayton Audio RSS265HF-8 10" Reference Series HF Subwoofer 8 Ohm
Pyle Single Voice Coil Car Subwoofer - 8 Inches, 200 Watts at 4-Ohm Car Audio Powered Subwoofer - Walmart.com