Mackie 2038373 12" Woofer For DLM12 | Full Compass Systems
Amazon.com: Mackie MR Series, Studio Subwoofer 10-Inch Professional-Grade with 120 Watts of class A/B Amplification, Powered (MRS10) : Musical Instruments
Used Mackie SRS1500 600-watt Active Subwoofer Speaker Cabinets