Amazon.com: Dual Electronics SBX212i 12-inch illumiNITE High Performance Studio Enclosed Subwoofers with 1,200 Watts of Peak Power & 41-Ounce Magnets : Electronics
NVX VSW84v2 | 8" VS-Series Dual 4-ohm Car Subwoofer
How to Wire Subs: Series/Parallel, Ohms, and Single vs. Dual Voice Coils | Car Audio Advice