Klipsch Reference Series RW-10d Powered subwoofer with built-in equalizer at Crutchfield
Klipsch SPL-150 review | What Hi-Fi?
Amazon.com: 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 : Everything