Focal JM Labs SW-32a Active subwoofer Gre... For Sale | Audiogon
PreSonus Temblor T8 Active 8" Studio Subwoofer - Sole Source AV Supply
Amazon.com: Mackie 8" Multimedia Creative Reference Bluetooth 200w Subwoofer w/Desktop Volume Controller w/ CR3-X Studio Monitors with and Pro Cable Kit Featuring Music Editing Software : Musical Instruments
KRK 10s 10 inch Powered Studio Subwoofer | Sweetwater