HKTS 15 | 5.1 Home Theater Speaker System (4 Satellites, 1 Center, and a 10 inch 100-Watt Powered Subwoofer) (CEN TS15,SAT TS15,SUB TS15)
Eminence LAB15 15" Pro Audio Subwoofer Speaker
Amazon.com: Acoustic Audio PSW600-15 Home Theater Powered 15" LFE Subwoofer Black Front Firing Sub : Electronics
Amazon.com: Monolith Powered Subwoofer - 15 Inch with 1,000 Watt Amplifier, THX Certified, Ideal for Professional Studio and Home Theater : Electronics