The QUBE QSA118SA is a powered compact bass reflex cabinet subwoofer. It incorporates an 18” B&C woofer with a 4” voice coil in a bass-reflex design cabinet powered by a 800WRMS Class “D” PWM amp. With a frequency response from 35Hz-120Hz, the QSA118SA provides 129.5dB SPL. The control panel features a volume control, 2 banks of dip switches are provided for EQ presets and Delay control. The cabinet is constructed with3/4" Baltic birch plywood and a rugged touring grade scratch resistant black paint finish protects the cabinet exterior. The system shall be flyable friendly built-in hardware manufactured with the highest safety standards.