JBL Club A600 High Performance Compact Class D Car Audio Mono Subwoofer Amplifier Bundle Combo with Infinity Reference 1000S 10" 800 Watt Peak Power Shallow Mount Car Audio Subwoofer - Road Entertainment
JBL GTO804 8 Subwoofer - Single 4-Ohm Voice Coil, 800 Watt Total, Reduced Depth at TigerDirect.com
Amazon.com: JBL Club WS1000 10" Shallow Mount subwoofer w/SSI (Selectable Smart Impedance) Switch from 2 to 4 ohm Bundled with Alphasonik Earbuds : Electronics