Dual XNBP12D Bandpass enclosure with two 12" woofers at Crutchfield
HIPPOXL152R - 15 inch Subwoofer | 3000 Watts RMS Dual 2 Ohm 4" V.C. Mega Subwoofer
Amazon.com: Dual Electronics SBX212i 12-inch illumiNITE High Performance Studio Enclosed Subwoofers with 1,200 Watts of Peak Power & 41-Ounce Magnets : Electronics
Focal Sub 10 Dual 10" Subwoofer, Dual 4-ohm Voice Coil, 250w Rms - 500 W Max : Target
Rockville RV1212P Dual 12" 1200w Car Audio Subwoofers in Vented Sub Enclosure Box - Rockville Audio
Dual SB-1000 Pro – SVS
55 Series 10" 2Ω Dual Voice Coil Subwoofer | MTX Audio - Serious About Sound®
Amazon.com: Dual Electronics BP1204 High Performance 12 inch Car Audio Subwoofers in a Tuned Bandpass Enclosure with Blue illumiNITE LED Illumination and Plexiglass Viewing Windows and 1,100 Watts of Peak Power : Electronics