Harbinger VARI V2318S 18" 2,400W Powered Subwoofer | Guitar Center
Amazon.com: Powered Subwoofer, Bestisan 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: Monoprice SW-15 600 W RMS 800 W Peak Powered Subwoofer – 15 pulgadas, diseño con puerto, control de fase variable, filtro de paso bajo variable, para cine en casa : Electrónica
QTX QT18SA 18" 1000 W Powered Subwoofer Bajo Activo bin Altavoz DJ Discoteca | eBay