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 Northridge E E250P 12-Inch Powered Subwoofer With 250-Watt Digital Amplifier Single - Newegg.com
JBL Cinema SB250 Powered home theater sound bar with wireless subwoofer and Bluetooth® at Crutchfield
Studio SUB 250P | JBL® Studio 2 Series 10” Powered Subwoofer