JBL GTO Series GT100 10" 4-Ohm Subwoofer at Crutchfield
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
Clearance JBL EON618S 1,000W Powered 18" Subwoofer | Guitar Center
Top 10 Best Car Competition Subwoofers - AutoGuide.com
New JBL CLUB WS1200 1000 Watts 12" 2 or 4 ohm Shallow Mount Truck Subwoofer - Walmart.com
JBL CS1214 1000-watt, 12" Car Audio Subwoofer, Black - Walmart.com
JBL Club A1000 1000W Subwoofer Amplifier with 2x 10" Subwoofers and Wiring Kit | eBay
JBL Stage 1210 Subwoofer | 12" (300mm) woofer with 250 RMS and 1000W peak power handling.
JBL Stage 1210D 12" 1000W MAX Power 250W RMS 4 Ohm DVC Subwoofer Single Sub - Walmart.com
JBL Stadium 1000 High Performance 2600 Watt Peak Power Class D Car Audio Mono Subwoofer Amplifier
JBL CS1214 12" Car Subwoofer Unboxing and Testing - YouTube