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
Alpine S-DB8V-TRK Halo Series 8" ported dual subwoofer enclosure with two 8" S-Series subwoofers at Crutchfield
Monolith by Monoprice M-IWSUB82 Dual 8in In-Wall Subwoofer - Monoprice.com
8" NITRO SERIES SUBWOOFER 1000 WMAX/500 WRMS DUAL COIL 4 OHM VOICE COI – GENIUS AUDIO USA
RX2 12" 200W Dual 4-Ohm Subwoofer - Phoenix Gold
Amazon.com: Dual Electronics SBX212i 12-inch illumiNITE High Performance Studio Enclosed Subwoofers with 1,200 Watts of Peak Power & 41-Ounce Magnets : Electronics