Samson’s RSX18A Active Subwoofer provides the pulsating lows that allow you to feel the bass. With an efficient Class D amplifier, this subwoofer packs the heartthumping power you need for fixed installations, musicians, DJs and general live sound reinforcement applications.RSX18A is an active subwoofer features an 18” low frequency woofer with a robust 3” voice coil driven by 2,000 watts of Class D power. It features a balanced XLR stereo input, as well as both balanced XLR stereo full range and balanced XLR stereo high-pass outputs to run your satellite speakers or daisy chain with additional subwoofers. The high pass output option allows you to focus the subwoofers power exclusively on the low frequencies.To ensure roadworthy durability, the RSX18A is constructed of solid plywood and features a perforated steel grill. The enclosure also features two metal side carry handles, as well as a 1 3/8” (35mm) pole mount receptacle.