MB Quart Reference Car Subwoofer | Maxxsonics @ CES 2013 - YouTube
Amazon.com: MB Quart RW1-304 Reference Subwoofer (Black) – 12 Inch Subwoofer, 1200 Watts, Car Audio, 3 Inch Voice Coils, Best Sound Quality in Vented Enclosures : Electronics
Amazon.com: MB Quart DS1-204 Discus Shallow Mount Subwoofer (Black) – 8 Inch Subwoofer, 400 Watt, Car Audio, 2 Inch Voice Coils, UV Rubber Surround, Best in Sealed Enclosures : Electronics