BOSS Audio Systems D12F Phantom Series 12 Inch Car Audio Subwoofer - 1000 Watts Max, Single 4 Ohm Voice Coil, Sold Individually, Low Profile, For Truck Boxes and Enclosures, Hook Up To Amplifier
CDT Audio QES-1200 - Car Hifi Subwoofer Chassis im Test - sehr gut - hifitest.de
MB Quart QSE-216 Q Series 6-1/2" 2-way component speaker system at Crutchfield
CDT Audio Subwoofer QES-820
Eton Versus Dayton --- 12" Woofer Comparison – Joseph Crowe
Digital Designs SL600 10
Amazon.com: Sundown Audio SA-8 V.3 D2 8" 500W RMS Dual 2-Ohm SA Series Subwoofer : Electronics