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
Pyle - UPLQB12 - On the Road - Subwoofer Enclosures
How to Build a Subwoofer Box | KICKER®
Sound Ordnance™ B-17 Bandpass enclosure with 12" subwoofer at Crutchfield