800w 10 Inch Super Subwoofer With Tweeter Car Audio Fever Diy Car Truck 12v24v High Power Speaker Active Speaker Modification - Speaker Accessories - AliExpress
Pioneer GM-D8601 Mono subwoofer amplifier — 800 watts RMS at 1 ohm – Clark Family Entertainment
Pioneer TS-A301S4 12" 4-ohm component subwoofer at Crutchfield
Buyr.com | Component Subwoofers | JBL Stage 810 800W Max 8" Stage Series Single 4 ohm Car Audio Subwoofer Speaker Bundled with Alphasonik Earbuds