Bandpass Enclosure Car Subwoofer Speaker - 500 Watt High Power Car Audio Sound C | eBay
Amazon.com: Massive Audio SUMMOXL104-10 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 10" Subwoofer 1500 Watt RMS, 3000w MAX Dual 4 Ohm, 3 Inch Voice Coil. Sold Individually : Electronics
Tips for Getting More Bass in Your Car
Differences In Subwoofer Sizes - Sonic Electronix Learning Center and Blog
PYLE 12 inch 1600 Watts Car Audio Power Dual Voice Coil 4 Ohm Subwoofer Unit - Walmart.com
Amazon.com: Massive Audio GTX102 – 10 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 10" Subwoofer 700 Watt RMS, 1400w MAX Dual 2 Ohm, 2.5 Inch Voice Coil. Sold Individually : Electronics
Tuning your subs
Are Subwoofers with Higher Power Ratings Always Louder?