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
JBL Stadium 82SSI Stadium Series 8" component subwoofer with switchable 2- or 4-ohm impedance at Crutchfield
JBL Stadium 82SSI 1200W SSI Technology 8" Selectable 2 to 4 ohm Car Subwoofer | eBay
JBL SR4719X Passive 1200W Dual Subwoofer Speaker Cabinet 2x18" Sub SR #31501 | Reverb
Amazon.com: JBL GT-12BP Passive 1200W 12 GT Series 4-Ohm Loaded Ported Bandpass Subwoofer Enclosure with Red LED Illumination (Renewed) : Electronics
Subwoofer JBL 1000 Watts BassworX for Sale in Seatac, WA - OfferUp
Black JBL CAR SUBWOOFER SPEAKER 1200W, Peek Power 1600w
JBL GX1200 GX Series 1000W RMS 12" Car Audio Subwoofer (Local Pick-Up Only)