Klipsch Reference R-112SW Powered subwoofer, wireless adapter optional at Crutchfield
Amazon.com: Klipsch Reference R-121SW 12” Front-Firing Subwoofer with revamped Spun-Copper thermoformed crystalline Polymer woofers and an All-Digital Amplifier for Premium Sound in Black : Electronics
Klipsch Reference R-112SW Subwoofer sound & bass test - YouTube
R-112SW Subwoofer | Klipsch
Customer Reviews: Klipsch Reference R-101SW 10" powered subwoofer at Crutchfield
Klipsch Reference R-112SW Subwoofer sound & bass test - YouTube