Amazon.com: Avante A18S Active Subwoofer Speaker, Built-in Digital Signal Processing with LCD Screen (18") : Musical Instruments
Amazon.com: PRORECK PR18 18 inch 2000W P.M.P.O Active Powered PA DJ Subwoofer Cabinet (ONE subwoofer) : Musical Instruments
Amazon.com: Sound Town 2000W 18" Active Powered Subwoofer with 2 Speaker Outputs, DJ/PA Pro Audio Sub with 4" Voice Coil, White (CARPO-18SWPW) : Musical Instruments
Amazon.com: BESTISAN Powered Subwoofer, 6.5" Active Home Audio Subwoofer in Compact Design,LFE & Stereo Line Inputs & Audio Output, Built-in Amplifier for Home Theater/Receiver/TV/Speakers, Black, SW65D : Everything Else
Amazon.com: QSC KS118 Active 18" Subwoofer : Musical Instruments
Amazon.com: FBT Q118SA Processed Active Subwoofer : Musical Instruments
Amazon.com: Gemini Sound ZRX-S18P 18" Inch Woofer Professional DJ PA Systems Active Powered Subwoofers with 1600W Watts Class D Digital Power, 3" Voice Coil, Line/Link in XLR Connectors : Musical Instruments
Amazon.com: Rockville PA System w/ 15" Speakers+18" Subwoofers+15" Monitors+Stands+Cables : Musical Instruments