JBL Stage 1200D Dual 12" 1200W Peak Car Audio Subwoofers in Ported Enclosure 50036381567 | eBay
JBL GT-12BP 1200W 12" GT Series 4-Ohm Loaded Ported Bandpass Subwoofer Enclosure with Red LED Illumination
Amazon.com: JBL Club WS1200 12" Shallow Mount subwoofer w/SSI (Selectable Smart Impedance) Switch from 2 to 4 ohm Bundled with Alphasonik Earbuds : Electronics