Klipsch Reference Series 12" 400W Powered Subwoofer Black 1070408 R-121-SW II - Best Buy
Klipsch Synergy Black Label Sub-100 10” Front-Firing Subwoofer with 150 Watts of Continuous Power, 300 watts of Dynamic Power, and All-Digital Amplifier for Powerful Home Theater Bass in Black : Amazon.ca: Electronics