The QX118 is the companion subwoofer for QX Series loudspeakers. Designed to extend the low frequency response of QX arrays to 30 Hz, this compact subwoofer features a high power 18” producing an exceptional amount of output. While the operating range is specified to 150 Hz when used with full-range QX products, the QX118 is capable of extended response to serve as an LF subsystem for MF/HF loudspeakers.