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
MB Quart DW1-304 Discus Subwoofer 12" DVC (DW1304) • FREE Shipping • Audio Jam Inc. of Delaware
MB Quart FWA-304D (FWA304D) 12" Dual 4 ohm Formula Subwoofer
MB Quart D1000Si High-End Powered 9" Front Firing Subwoofer Black | eBay
MB Quart DWI-304 (DWI304)12" Dual 4 ohm Discus Car Subwoofer