Amazon.com: New Dual DLS12 12-Inch 875 Watts 4-Ohm Car Audio Power Subwoofer Sub DLS-12 : Electronics
Amazon.com: 2 x 12 Subwoofer 1200W 2" 4 Ohm DVC Pro Car Audio American Bass XO-1244 : Electronics
Alpine S-DB8V-TRK Halo Series 8" ported dual subwoofer enclosure with two 8" S-Series subwoofers at Crutchfield
Amazon.com: Dual Electronics SBX212i 12-inch illumiNITE High Performance Studio Enclosed Subwoofers with 1,200 Watts of Peak Power & 41-Ounce Magnets : Electronics
Kicker Comp R 12 Inch Dual Subwoofer In Vented Enclosure Package With 46cxa8001 Amplifier And Wire Kit : Target
Dual 10" Subwoofer Regular Standard Cab Truck Sub Box Enclosure 5/8" MDF - Black | TRUCK492X10
Dual Electronics - 10" Subwoofer in a Vented Enclosure - SBX101